qemu/system/vl.c

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/*
* QEMU System Emulator
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/help-texts.h"
#include "qemu/datadir.h"
#include "qemu/units.h"
#include "exec/cpu-common.h"
#include "exec/page-vary.h"
#include "hw/qdev-properties.h"
#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qmp/qjson.h"
#include "qemu-version.h"
#include "qemu/cutils.h"
#include "qemu/help_option.h"
#include "qemu/hw-version.h"
#include "qemu/uuid.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "sysemu/runstate-action.h"
#include "sysemu/seccomp.h"
#include "sysemu/tcg.h"
#include "sysemu/xen.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
#include "qemu/accel.h"
#include "qemu/async-teardown.h"
#include "hw/usb.h"
#include "hw/isa/isa.h"
#include "hw/scsi/scsi.h"
#include "hw/display/vga.h"
#include "hw/firmware/smbios.h"
#include "hw/acpi/acpi.h"
#include "hw/xen/xen.h"
#include "hw/loader.h"
#include "monitor/qdev.h"
#include "net/net.h"
#include "net/slirp.h"
#include "monitor/monitor.h"
#include "ui/console.h"
#include "ui/input.h"
#include "sysemu/sysemu.h"
#include "sysemu/numa.h"
#include "sysemu/hostmem.h"
#include "exec/gdbstub.h"
#include "qemu/timer.h"
#include "chardev/char.h"
#include "qemu/bitmap.h"
#include "qemu/log.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "hw/i386/x86.h"
#include "hw/i386/pc.h"
#include "migration/misc.h"
#include "migration/snapshot.h"
#include "sysemu/tpm.h"
#include "sysemu/dma.h"
#include "hw/audio/soundhw.h"
#include "audio/audio.h"
#include "sysemu/cpus.h"
#include "sysemu/cpu-timers.h"
#include "migration/colo.h"
#include "migration/postcopy-ram.h"
#include "sysemu/kvm.h"
#include "qapi/qobject-input-visitor.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qemu/main-loop.h"
#ifdef CONFIG_VIRTFS
#include "fsdev/qemu-fsdev.h"
#endif
#include "sysemu/qtest.h"
#ifdef CONFIG_TCG
#include "tcg/perf.h"
#endif
#include "disas/disas.h"
#include "trace.h"
#include "trace/control.h"
#include "qemu/plugin.h"
#include "qemu/queue.h"
#include "sysemu/arch_init.h"
#include "exec/confidential-guest-support.h"
#include "ui/qemu-spice.h"
#include "qapi/string-input-visitor.h"
#include "qapi/opts-visitor.h"
#include "qapi/clone-visitor.h"
#include "qom/object_interfaces.h"
#include "semihosting/semihost.h"
#include "crypto/init.h"
#include "sysemu/replay.h"
#include "qapi/qapi-events-run-state.h"
#include "qapi/qapi-types-audio.h"
#include "qapi/qapi-visit-audio.h"
#include "qapi/qapi-visit-block-core.h"
#include "qapi/qapi-visit-compat.h"
hw/cxl/host: Add support for CXL Fixed Memory Windows. The concept of these is introduced in [1] in terms of the description the CEDT ACPI table. The principal is more general. Unlike once traffic hits the CXL root bridges, the host system memory address routing is implementation defined and effectively static once observable by standard / generic system software. Each CXL Fixed Memory Windows (CFMW) is a region of PA space which has fixed system dependent routing configured so that accesses can be routed to the CXL devices below a set of target root bridges. The accesses may be interleaved across multiple root bridges. For QEMU we could have fully specified these regions in terms of a base PA + size, but as the absolute address does not matter it is simpler to let individual platforms place the memory regions. ExampleS: -cxl-fixed-memory-window targets.0=cxl.0,size=128G -cxl-fixed-memory-window targets.0=cxl.1,size=128G -cxl-fixed-memory-window targets.0=cxl0,targets.1=cxl.1,size=256G,interleave-granularity=2k Specifies * 2x 128G regions not interleaved across root bridges, one for each of the root bridges with ids cxl.0 and cxl.1 * 256G region interleaved across root bridges with ids cxl.0 and cxl.1 with a 2k interleave granularity. When system software enumerates the devices below a given root bridge it can then decide which CFMW to use. If non interleave is desired (or possible) it can use the appropriate CFMW for the root bridge in question. If there are suitable devices to interleave across the two root bridges then it may use the 3rd CFMS. A number of other designs were considered but the following constraints made it hard to adapt existing QEMU approaches to this particular problem. 1) The size must be known before a specific architecture / board brings up it's PA memory map. We need to set up an appropriate region. 2) Using links to the host bridges provides a clean command line interface but these links cannot be established until command line devices have been added. Hence the two step process used here of first establishing the size, interleave-ways and granularity + caching the ids of the host bridges and then, once available finding the actual host bridges so they can be used later to support interleave decoding. [1] CXL 2.0 ECN: CEDT CFMWS & QTG DSM (computeexpresslink.org / specifications) Signed-off-by: Jonathan Cameron <jonathan.cameron@huawei.com> Acked-by: Markus Armbruster <armbru@redhat.com> # QAPI Schema Message-Id: <20220429144110.25167-28-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-04-29 17:40:52 +03:00
#include "qapi/qapi-visit-machine.h"
#include "qapi/qapi-visit-ui.h"
#include "qapi/qapi-commands-block-core.h"
#include "qapi/qapi-commands-migration.h"
#include "qapi/qapi-commands-misc.h"
#include "qapi/qapi-visit-qom.h"
#include "qapi/qapi-commands-ui.h"
#include "block/qdict.h"
#include "qapi/qmp/qerror.h"
#include "sysemu/iothread.h"
#include "qemu/guest-random.h"
#include "qemu/keyval.h"
virtio-console: qdev conversion, new virtio-serial-bus This commit converts the virtio-console device to create a new virtio-serial bus that can host console and generic serial ports. The file hosting this code is now called virtio-serial-bus.c. The virtio console is now a very simple qdev device that sits on the virtio-serial-bus and communicates between the bus and qemu's chardevs. This commit also includes a few changes to the virtio backing code for pci and s390 to spawn the virtio-serial bus. As a result of the qdev conversion, we get rid of a lot of legacy code. The old-style way of instantiating a virtio console using -virtioconsole ... is maintained, but the new, preferred way is to use -device virtio-serial -device virtconsole,chardev=... With this commit, multiple devices as well as multiple ports with a single device can be supported. For multiple ports support, each port gets an IO vq pair. Since the guest needs to know in advance how many vqs a particular device will need, we have to set this number as a property of the virtio-serial device and also as a config option. In addition, we also spawn a pair of control IO vqs. This is an internal channel meant for guest-host communication for things like port open/close, sending port properties over to the guest, etc. This commit is a part of a series of other commits to get the full implementation of multiport support. Future commits will add other support as well as ride on the savevm version that we bump up here. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-19 22:06:52 +03:00
#define MAX_VIRTIO_CONSOLES 1
typedef struct BlockdevOptionsQueueEntry {
BlockdevOptions *bdo;
Location loc;
QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
} BlockdevOptionsQueueEntry;
typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
typedef struct ObjectOption {
ObjectOptions *opts;
QTAILQ_ENTRY(ObjectOption) next;
} ObjectOption;
typedef struct DeviceOption {
QDict *opts;
Location loc;
QTAILQ_ENTRY(DeviceOption) next;
} DeviceOption;
static const char *cpu_option;
static const char *mem_path;
static const char *incoming;
static const char *loadvm;
static const char *accelerators;
static bool have_custom_ram_size;
static const char *ram_memdev_id;
static QDict *machine_opts_dict;
static QTAILQ_HEAD(, ObjectOption) object_opts = QTAILQ_HEAD_INITIALIZER(object_opts);
static QTAILQ_HEAD(, DeviceOption) device_opts = QTAILQ_HEAD_INITIALIZER(device_opts);
static int display_remote;
static int snapshot;
static bool preconfig_requested;
static QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
static BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
static bool nographic = false;
static int mem_prealloc; /* force preallocation of physical target memory */
static const char *vga_model = NULL;
static DisplayOptions dpy;
static int num_serial_hds;
static Chardev **serial_hds;
static const char *log_mask;
static const char *log_file;
static bool list_data_dirs;
static const char *qtest_chrdev;
static const char *qtest_log;
static int has_defaults = 1;
static int default_audio = 1;
static int default_serial = 1;
static int default_parallel = 1;
static int default_monitor = 1;
static int default_floppy = 1;
static int default_cdrom = 1;
static int default_sdcard = 1;
static int default_vga = 1;
static int default_net = 1;
static const struct {
const char *driver;
int *flag;
} default_list[] = {
{ .driver = "xen-console", .flag = &default_serial },
{ .driver = "isa-serial", .flag = &default_serial },
{ .driver = "isa-parallel", .flag = &default_parallel },
{ .driver = "isa-fdc", .flag = &default_floppy },
{ .driver = "floppy", .flag = &default_floppy },
{ .driver = "ide-cd", .flag = &default_cdrom },
{ .driver = "ide-hd", .flag = &default_cdrom },
{ .driver = "scsi-cd", .flag = &default_cdrom },
{ .driver = "scsi-hd", .flag = &default_cdrom },
{ .driver = "VGA", .flag = &default_vga },
{ .driver = "isa-vga", .flag = &default_vga },
{ .driver = "cirrus-vga", .flag = &default_vga },
{ .driver = "isa-cirrus-vga", .flag = &default_vga },
{ .driver = "vmware-svga", .flag = &default_vga },
{ .driver = "qxl-vga", .flag = &default_vga },
{ .driver = "virtio-vga", .flag = &default_vga },
{ .driver = "ati-vga", .flag = &default_vga },
{ .driver = "vhost-user-vga", .flag = &default_vga },
{ .driver = "virtio-vga-gl", .flag = &default_vga },
{ .driver = "virtio-vga-rutabaga", .flag = &default_vga },
};
static QemuOptsList qemu_rtc_opts = {
.name = "rtc",
.head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
.merge_lists = true,
.desc = {
{
.name = "base",
.type = QEMU_OPT_STRING,
},{
.name = "clock",
.type = QEMU_OPT_STRING,
},{
.name = "driftfix",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_option_rom_opts = {
.name = "option-rom",
.implied_opt_name = "romfile",
.head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
.desc = {
{
.name = "bootindex",
.type = QEMU_OPT_NUMBER,
}, {
.name = "romfile",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_accel_opts = {
.name = "accel",
.implied_opt_name = "accel",
.head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
.desc = {
/*
* no elements => accept any
* sanity checking will happen later
* when setting accelerator properties
*/
{ }
},
};
static QemuOptsList qemu_boot_opts = {
.name = "boot-opts",
.implied_opt_name = "order",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
.desc = {
{
.name = "order",
.type = QEMU_OPT_STRING,
}, {
.name = "once",
.type = QEMU_OPT_STRING,
}, {
.name = "menu",
.type = QEMU_OPT_BOOL,
}, {
.name = "splash",
.type = QEMU_OPT_STRING,
}, {
.name = "splash-time",
.type = QEMU_OPT_NUMBER,
}, {
.name = "reboot-timeout",
.type = QEMU_OPT_NUMBER,
}, {
.name = "strict",
.type = QEMU_OPT_BOOL,
},
{ /*End of list */ }
},
};
static QemuOptsList qemu_add_fd_opts = {
.name = "add-fd",
.head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
.desc = {
{
.name = "fd",
.type = QEMU_OPT_NUMBER,
.help = "file descriptor of which a duplicate is added to fd set",
},{
.name = "set",
.type = QEMU_OPT_NUMBER,
.help = "ID of the fd set to add fd to",
},{
.name = "opaque",
.type = QEMU_OPT_STRING,
.help = "free-form string used to describe fd",
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_object_opts = {
.name = "object",
.implied_opt_name = "qom-type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
.desc = {
{ }
},
};
static QemuOptsList qemu_tpmdev_opts = {
.name = "tpmdev",
.implied_opt_name = "type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
.desc = {
/* options are defined in the TPM backends */
{ /* end of list */ }
},
};
static QemuOptsList qemu_overcommit_opts = {
.name = "overcommit",
.head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
.desc = {
{
.name = "mem-lock",
.type = QEMU_OPT_BOOL,
},
{
.name = "cpu-pm",
.type = QEMU_OPT_BOOL,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_msg_opts = {
.name = "msg",
.head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
.desc = {
{
.name = "timestamp",
.type = QEMU_OPT_BOOL,
},
{
.name = "guest-name",
.type = QEMU_OPT_BOOL,
.help = "Prepends guest name for error messages but only if "
"-name guest is set otherwise option is ignored\n",
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_name_opts = {
.name = "name",
.implied_opt_name = "guest",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
.desc = {
{
.name = "guest",
.type = QEMU_OPT_STRING,
.help = "Sets the name of the guest.\n"
"This name will be displayed in the SDL window caption.\n"
"The name will also be used for the VNC server",
}, {
.name = "process",
.type = QEMU_OPT_STRING,
.help = "Sets the name of the QEMU process, as shown in top etc",
}, {
.name = "debug-threads",
.type = QEMU_OPT_BOOL,
.help = "When enabled, name the individual threads; defaults off.\n"
"NOTE: The thread names are for debugging and not a\n"
"stable API.",
},
{ /* End of list */ }
},
};
static QemuOptsList qemu_mem_opts = {
.name = "memory",
.implied_opt_name = "size",
.head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
.merge_lists = true,
.desc = {
{
.name = "size",
.type = QEMU_OPT_SIZE,
},
{
.name = "slots",
.type = QEMU_OPT_NUMBER,
},
{
.name = "maxmem",
.type = QEMU_OPT_SIZE,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_icount_opts = {
.name = "icount",
.implied_opt_name = "shift",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
.desc = {
{
.name = "shift",
.type = QEMU_OPT_STRING,
}, {
.name = "align",
.type = QEMU_OPT_BOOL,
}, {
.name = "sleep",
.type = QEMU_OPT_BOOL,
}, {
.name = "rr",
.type = QEMU_OPT_STRING,
}, {
.name = "rrfile",
.type = QEMU_OPT_STRING,
}, {
.name = "rrsnapshot",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_fw_cfg_opts = {
.name = "fw_cfg",
.implied_opt_name = "name",
.head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
.desc = {
{
.name = "name",
.type = QEMU_OPT_STRING,
.help = "Sets the fw_cfg name of the blob to be inserted",
}, {
.name = "file",
.type = QEMU_OPT_STRING,
.help = "Sets the name of the file from which "
"the fw_cfg blob will be loaded",
}, {
.name = "string",
.type = QEMU_OPT_STRING,
.help = "Sets content of the blob to be inserted from a string",
}, {
.name = "gen_id",
.type = QEMU_OPT_STRING,
.help = "Sets id of the object generating the fw_cfg blob "
"to be inserted",
},
{ /* end of list */ }
},
};
static QemuOptsList qemu_action_opts = {
.name = "action",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_action_opts.head),
.desc = {
{
.name = "shutdown",
.type = QEMU_OPT_STRING,
},{
.name = "reboot",
.type = QEMU_OPT_STRING,
},{
.name = "panic",
.type = QEMU_OPT_STRING,
},{
.name = "watchdog",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
const char *qemu_get_vm_name(void)
{
return qemu_name;
}
static void default_driver_disable(const char *driver)
{
int i;
if (!driver) {
return;
}
for (i = 0; i < ARRAY_SIZE(default_list); i++) {
if (strcmp(default_list[i].driver, driver) != 0)
continue;
*(default_list[i].flag) = 0;
}
}
static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
{
const char *driver = qemu_opt_get(opts, "driver");
default_driver_disable(driver);
return 0;
}
static void default_driver_check_json(void)
{
DeviceOption *opt;
QTAILQ_FOREACH(opt, &device_opts, next) {
const char *driver = qdict_get_try_str(opt->opts, "driver");
default_driver_disable(driver);
}
}
static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
{
const char *proc_name;
if (qemu_opt_get(opts, "debug-threads")) {
qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
}
qemu_name = qemu_opt_get(opts, "guest");
proc_name = qemu_opt_get(opts, "process");
if (proc_name) {
os_set_proc_name(proc_name);
}
return 0;
}
bool defaults_enabled(void)
{
return has_defaults;
}
#ifndef _WIN32
static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
{
int fd, dupfd, flags;
int64_t fdset_id;
const char *fd_opaque = NULL;
AddfdInfo *fdinfo;
fd = qemu_opt_get_number(opts, "fd", -1);
fdset_id = qemu_opt_get_number(opts, "set", -1);
fd_opaque = qemu_opt_get(opts, "opaque");
if (fd < 0) {
error_setg(errp, "fd option is required and must be non-negative");
return -1;
}
if (fd <= STDERR_FILENO) {
error_setg(errp, "fd cannot be a standard I/O stream");
return -1;
}
/*
* All fds inherited across exec() necessarily have FD_CLOEXEC
* clear, while qemu sets FD_CLOEXEC on all other fds used internally.
*/
flags = fcntl(fd, F_GETFD);
if (flags == -1 || (flags & FD_CLOEXEC)) {
error_setg(errp, "fd is not valid or already in use");
return -1;
}
if (fdset_id < 0) {
error_setg(errp, "set option is required and must be non-negative");
return -1;
}
#ifdef F_DUPFD_CLOEXEC
dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
#else
dupfd = dup(fd);
if (dupfd != -1) {
qemu_set_cloexec(dupfd);
}
#endif
if (dupfd == -1) {
error_setg(errp, "error duplicating fd: %s", strerror(errno));
return -1;
}
/* add the duplicate fd, and optionally the opaque string, to the fd set */
fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, fd_opaque,
&error_abort);
g_free(fdinfo);
return 0;
}
static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
{
int fd;
fd = qemu_opt_get_number(opts, "fd", -1);
close(fd);
return 0;
}
#endif
/***********************************************************/
/* QEMU Block devices */
#define HD_OPTS "media=disk"
#define CDROM_OPTS "media=cdrom"
#define FD_OPTS ""
#define PFLASH_OPTS ""
#define MTD_OPTS ""
#define SD_OPTS ""
static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
Support default block interfaces per QEMUMachine There are QEMUMachines that have neither IF_IDE nor IF_SCSI as a default/standard interface to their block devices / drives. Therefore, this patch introduces a new field default_block_type per QEMUMachine struct. The prior use_scsi field becomes thereby obsolete and is replaced through .default_block_type = IF_SCSI. This patch also changes the default for s390x to IF_VIRTIO and removes an early hack that converts IF_IDE drives. Other parties have already claimed interest (e.g. IF_SD for exynos) To create a sane default, for machines that dont specify a default_block_type, this patch makes IF_IDE = 0 and IF_NONE = 1. I checked all users of IF_NONE (blockdev.c and ww/device-hotplug.c) as well as IF_IDE and it seems that it is ok to change the defines - in other words, I found no obvious (to me) assumption in the code regarding IF_NONE==0. IF_NONE is only set if there is an explicit if=none. Without if=* the interface becomes IF_DEFAULT. I would suggest to have some additional care, e.g. by letting this patch sit some days in the block tree. Based on an initial patch from Einar Lueck <elelueck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: Igor Mitsyanko <i.mitsyanko@samsung.com> CC: Markus Armbruster <armbru@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alexander Graf <agraf@suse.de> Acked-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-11-20 18:30:34 +04:00
BlockInterfaceType *block_default_type = opaque;
return drive_new(opts, *block_default_type, errp) == NULL;
}
static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
{
if (qemu_opt_get(opts, "snapshot") == NULL) {
qemu_opt_set(opts, "snapshot", "on", &error_abort);
}
return 0;
}
static void default_drive(int enable, int snapshot, BlockInterfaceType type,
int index, const char *optstr)
{
QemuOpts *opts;
DriveInfo *dinfo;
if (!enable || drive_get_by_index(type, index)) {
return;
}
opts = drive_add(type, index, NULL, optstr);
if (snapshot) {
drive_enable_snapshot(NULL, opts, NULL);
}
dinfo = drive_new(opts, type, &error_abort);
dinfo->is_default = true;
}
static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
MachineClass *machine_class, int snapshot)
{
/*
* If the currently selected machine wishes to override the
* units-per-bus property of its default HBA interface type, do so
* now.
*/
if (machine_class->units_per_default_bus) {
override_max_devs(machine_class->block_default_type,
machine_class->units_per_default_bus);
}
/* open the virtual block devices */
while (!QSIMPLEQ_EMPTY(bdo_queue)) {
BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
loc_push_restore(&bdo->loc);
qmp_blockdev_add(bdo->bdo, &error_fatal);
loc_pop(&bdo->loc);
qapi_free_BlockdevOptions(bdo->bdo);
g_free(bdo);
}
if (snapshot) {
qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
NULL, NULL);
}
if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
&machine_class->block_default_type, &error_fatal)) {
/* We printed help */
exit(0);
}
default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
CDROM_OPTS);
default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
}
static QemuOptsList qemu_smp_opts = {
.name = "smp-opts",
.implied_opt_name = "cpus",
.merge_lists = true,
.head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
.desc = {
{
.name = "cpus",
.type = QEMU_OPT_NUMBER,
}, {
.name = "drawers",
.type = QEMU_OPT_NUMBER,
}, {
.name = "books",
.type = QEMU_OPT_NUMBER,
}, {
.name = "sockets",
.type = QEMU_OPT_NUMBER,
}, {
.name = "dies",
.type = QEMU_OPT_NUMBER,
hw/core/machine: Introduce CPU cluster topology support The new Cluster-Aware Scheduling support has landed in Linux 5.16, which has been proved to benefit the scheduling performance (e.g. load balance and wake_affine strategy) on both x86_64 and AArch64. So now in Linux 5.16 we have four-level arch-neutral CPU topology definition like below and a new scheduler level for clusters. struct cpu_topology { int thread_id; int core_id; int cluster_id; int package_id; int llc_id; cpumask_t thread_sibling; cpumask_t core_sibling; cpumask_t cluster_sibling; cpumask_t llc_sibling; } A cluster generally means a group of CPU cores which share L2 cache or other mid-level resources, and it is the shared resources that is used to improve scheduler's behavior. From the point of view of the size range, it's between CPU die and CPU core. For example, on some ARM64 Kunpeng servers, we have 6 clusters in each NUMA node, and 4 CPU cores in each cluster. The 4 CPU cores share a separate L2 cache and a L3 cache tag, which brings cache affinity advantage. In virtualization, on the Hosts which have pClusters (physical clusters), if we can design a vCPU topology with cluster level for guest kernel and have a dedicated vCPU pinning. A Cluster-Aware Guest kernel can also make use of the cache affinity of CPU clusters to gain similar scheduling performance. This patch adds infrastructure for CPU cluster level topology configuration and parsing, so that the user can specify cluster parameter if their machines support it. Signed-off-by: Yanan Wang <wangyanan55@huawei.com> Message-Id: <20211228092221.21068-3-wangyanan55@huawei.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> [PMD: Added '(since 7.0)' to @clusters in qapi/machine.json] Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-12-28 12:22:09 +03:00
}, {
.name = "clusters",
.type = QEMU_OPT_NUMBER,
}, {
.name = "cores",
.type = QEMU_OPT_NUMBER,
}, {
.name = "threads",
.type = QEMU_OPT_NUMBER,
}, {
.name = "maxcpus",
.type = QEMU_OPT_NUMBER,
},
{ /*End of list */ }
},
};
#if defined(CONFIG_POSIX)
static QemuOptsList qemu_run_with_opts = {
.name = "run-with",
.head = QTAILQ_HEAD_INITIALIZER(qemu_run_with_opts.head),
.desc = {
#if defined(CONFIG_LINUX)
{
.name = "async-teardown",
.type = QEMU_OPT_BOOL,
},
#endif
{
.name = "chroot",
.type = QEMU_OPT_STRING,
},
{ /* end of list */ }
},
};
#define qemu_add_run_with_opts() qemu_add_opts(&qemu_run_with_opts)
#else
#define qemu_add_run_with_opts()
#endif /* CONFIG_POSIX */
static void realtime_init(void)
{
if (enable_mlock) {
if (os_mlock() < 0) {
error_report("locking memory failed");
exit(1);
}
}
}
static void configure_msg(QemuOpts *opts)
{
message_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
error_with_guestname = qemu_opt_get_bool(opts, "guest-name", false);
}
/***********************************************************/
/* USB devices */
static int usb_device_add(const char *devname)
{
USBDevice *dev = NULL;
if (!machine_usb(current_machine)) {
return -1;
}
dev = usbdevice_create(devname);
if (!dev)
return -1;
return 0;
}
static int usb_parse(const char *cmdline)
{
int r;
r = usb_device_add(cmdline);
if (r < 0) {
error_report("could not add USB device '%s'", cmdline);
}
return r;
}
/***********************************************************/
/* machine registration */
static MachineClass *find_machine(const char *name, GSList *machines)
{
GSList *el;
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
return mc;
}
}
return NULL;
}
static MachineClass *find_default_machine(GSList *machines)
{
GSList *el;
MachineClass *default_machineclass = NULL;
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
if (mc->is_default) {
assert(default_machineclass == NULL && "Multiple default machines");
default_machineclass = mc;
}
}
return default_machineclass;
}
static void version(void)
{
printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
QEMU_COPYRIGHT "\n");
}
static void help(int exitcode)
{
version();
printf("usage: %s [options] [disk_image]\n\n"
"'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
g_get_prgname());
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
if ((arch_mask) & arch_type) \
fputs(opt_help, stdout);
#define ARCHHEADING(text, arch_mask) \
if ((arch_mask) & arch_type) \
puts(stringify(text));
#define DEFHEADING(text) ARCHHEADING(text, QEMU_ARCH_ALL)
#include "qemu-options.def"
printf("\nDuring emulation, the following keys are useful:\n"
"ctrl-alt-f toggle full screen\n"
"ctrl-alt-n switch to virtual console 'n'\n"
"ctrl-alt-g toggle mouse and keyboard grab\n"
"\n"
"When using -nographic, press 'ctrl-a h' to get some help.\n"
"\n"
QEMU_HELP_BOTTOM "\n");
exit(exitcode);
}
enum {
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
opt_enum,
#define DEFHEADING(text)
#define ARCHHEADING(text, arch_mask)
#include "qemu-options.def"
};
#define HAS_ARG 0x0001
typedef struct QEMUOption {
const char *name;
int flags;
int index;
uint32_t arch_mask;
} QEMUOption;
static const QEMUOption qemu_options[] = {
{ "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
{ option, opt_arg, opt_enum, arch_mask },
#define DEFHEADING(text)
#define ARCHHEADING(text, arch_mask)
#include "qemu-options.def"
{ /* end of list */ }
};
typedef struct VGAInterfaceInfo {
const char *opt_name; /* option name */
const char *name; /* human-readable name */
/* Class names indicating that support is available.
* If no class is specified, the interface is always available */
const char *class_names[2];
} VGAInterfaceInfo;
static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
[VGA_NONE] = {
.opt_name = "none",
.name = "no graphic card",
},
[VGA_STD] = {
.opt_name = "std",
.name = "standard VGA",
.class_names = { "VGA", "isa-vga" },
},
[VGA_CIRRUS] = {
.opt_name = "cirrus",
.name = "Cirrus VGA",
.class_names = { "cirrus-vga", "isa-cirrus-vga" },
},
[VGA_VMWARE] = {
.opt_name = "vmware",
.name = "VMWare SVGA",
.class_names = { "vmware-svga" },
},
[VGA_VIRTIO] = {
.opt_name = "virtio",
.name = "Virtio VGA",
.class_names = { "virtio-vga" },
},
[VGA_QXL] = {
.opt_name = "qxl",
.name = "QXL VGA",
.class_names = { "qxl-vga" },
},
[VGA_TCX] = {
.opt_name = "tcx",
.name = "TCX framebuffer",
.class_names = { "sun-tcx" },
},
[VGA_CG3] = {
.opt_name = "cg3",
.name = "CG3 framebuffer",
.class_names = { "cgthree" },
},
#ifdef CONFIG_XEN_BACKEND
[VGA_XENFB] = {
.opt_name = "xenfb",
.name = "Xen paravirtualized framebuffer",
},
#endif
};
static bool vga_interface_available(VGAInterfaceType t)
{
const VGAInterfaceInfo *ti = &vga_interfaces[t];
assert(t < VGA_TYPE_MAX);
return !ti->class_names[0] ||
module_object_class_by_name(ti->class_names[0]) ||
module_object_class_by_name(ti->class_names[1]);
}
static const char *
get_default_vga_model(const MachineClass *machine_class)
{
if (machine_class->default_display) {
for (int t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
if (ti->opt_name && vga_interface_available(t) &&
g_str_equal(ti->opt_name, machine_class->default_display)) {
return machine_class->default_display;
}
}
warn_report_once("Default display '%s' is not available in this binary",
machine_class->default_display);
return NULL;
} else if (vga_interface_available(VGA_CIRRUS)) {
return "cirrus";
} else if (vga_interface_available(VGA_STD)) {
return "std";
}
return NULL;
}
static void select_vgahw(const MachineClass *machine_class, const char *p)
{
const char *opts;
int t;
if (g_str_equal(p, "help")) {
const char *def = get_default_vga_model(machine_class);
for (t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
if (vga_interface_available(t) && ti->opt_name) {
printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
(def && g_str_equal(ti->opt_name, def)) ?
" (default)" : "");
}
}
exit(0);
}
assert(vga_interface_type == VGA_NONE);
for (t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
if (!vga_interface_available(t)) {
error_report("%s not available", ti->name);
exit(1);
}
vga_interface_type = t;
break;
}
}
if (t == VGA_TYPE_MAX) {
invalid_vga:
error_report("unknown vga type: %s", p);
exit(1);
}
while (*opts) {
const char *nextopt;
if (strstart(opts, ",retrace=", &nextopt)) {
opts = nextopt;
if (strstart(opts, "dumb", &nextopt))
vga_retrace_method = VGA_RETRACE_DUMB;
else if (strstart(opts, "precise", &nextopt))
vga_retrace_method = VGA_RETRACE_PRECISE;
else goto invalid_vga;
} else goto invalid_vga;
opts = nextopt;
}
}
static void parse_display_qapi(const char *str)
{
DisplayOptions *opts;
Visitor *v;
v = qobject_input_visitor_new_str(str, "type", &error_fatal);
visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
qapi_free_DisplayOptions(opts);
visit_free(v);
}
DisplayOptions *qmp_query_display_options(Error **errp)
{
return QAPI_CLONE(DisplayOptions, &dpy);
}
static void parse_display(const char *p)
{
if (is_help_option(p)) {
qemu_display_help();
exit(0);
}
#ifdef CONFIG_VNC
const char *opts;
if (strstart(p, "vnc", &opts)) {
/*
* vnc isn't a (local) DisplayType but a protocol for remote
* display access.
*/
if (*opts == '=') {
vnc_parse(opts + 1);
display_remote++;
} else {
error_report("VNC requires a display argument vnc=<display>");
exit(1);
}
return;
}
#endif
parse_display_qapi(p);
}
static inline bool nonempty_str(const char *str)
{
return str && *str;
}
static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
{
gchar *buf;
size_t size;
const char *name, *file, *str, *gen_id;
FWCfgState *fw_cfg = (FWCfgState *) opaque;
if (fw_cfg == NULL) {
error_setg(errp, "fw_cfg device not available");
return -1;
}
name = qemu_opt_get(opts, "name");
file = qemu_opt_get(opts, "file");
str = qemu_opt_get(opts, "string");
gen_id = qemu_opt_get(opts, "gen_id");
/* we need the name, and exactly one of: file, content string, gen_id */
if (!nonempty_str(name) ||
nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
error_setg(errp, "name, plus exactly one of file,"
" string and gen_id, are needed");
return -1;
}
if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
error_setg(errp, "name too long (max. %d char)",
FW_CFG_MAX_FILE_PATH - 1);
return -1;
}
if (nonempty_str(gen_id)) {
/*
* In this particular case where the content is populated
* internally, the "etc/" namespace protection is relaxed,
* so do not emit a warning.
*/
} else if (strncmp(name, "opt/", 4) != 0) {
Convert error_report() to warn_report() Convert all uses of error_report("warning:"... to use warn_report() instead. This helps standardise on a single method of printing warnings to the user. All of the warnings were changed using these two commands: find ./* -type f -exec sed -i \ 's|error_report(".*warning[,:] |warn_report("|Ig' {} + Indentation fixed up manually afterwards. The test-qdev-global-props test case was manually updated to ensure that this patch passes make check (as the test cases are case sensitive). Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Suggested-by: Thomas Huth <thuth@redhat.com> Cc: Jeff Cody <jcody@redhat.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: Max Reitz <mreitz@redhat.com> Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Lieven <pl@kamp.de> Cc: Josh Durgin <jdurgin@redhat.com> Cc: "Richard W.M. Jones" <rjones@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Cc: Peter Crosthwaite <crosthwaite.peter@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Greg Kurz <groug@kaod.org> Cc: Rob Herring <robh@kernel.org> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Peter Chubb <peter.chubb@nicta.com.au> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Marcel Apfelbaum <marcel@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Alexander Graf <agraf@suse.de> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Greg Kurz <groug@kaod.org> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed by: Peter Chubb <peter.chubb@data61.csiro.au> Acked-by: Max Reitz <mreitz@redhat.com> Acked-by: Marcel Apfelbaum <marcel@redhat.com> Message-Id: <e1cfa2cd47087c248dd24caca9c33d9af0c499b0.1499866456.git.alistair.francis@xilinx.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-07-12 16:57:41 +03:00
warn_report("externally provided fw_cfg item names "
"should be prefixed with \"opt/\"");
}
if (nonempty_str(str)) {
size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
buf = g_memdup(str, size);
} else if (nonempty_str(gen_id)) {
2020-07-20 15:20:15 +03:00
if (!fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp)) {
return -1;
}
return 0;
} else {
GError *err = NULL;
if (!g_file_get_contents(file, &buf, &size, &err)) {
error_setg(errp, "can't load %s: %s", file, err->message);
g_error_free(err);
return -1;
}
}
/* For legacy, keep user files in a specific global order. */
fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
fw_cfg_add_file(fw_cfg, name, buf, size);
fw_cfg_reset_order_override(fw_cfg);
return 0;
}
static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
{
return qdev_device_help(opts);
}
static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
DeviceState *dev;
dev = qdev_device_add(opts, errp);
2019-10-29 14:48:55 +03:00
if (!dev && *errp) {
error_report_err(*errp);
return -1;
2019-10-29 14:48:55 +03:00
} else if (dev) {
object_unref(OBJECT(dev));
}
return 0;
}
static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
Error *local_err = NULL;
if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
if (local_err) {
error_propagate(errp, local_err);
return -1;
}
exit(0);
}
return 0;
}
#ifdef CONFIG_VIRTFS
static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
return qemu_fsdev_add(opts, errp);
}
#endif
static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
return monitor_init_opts(opts, errp);
}
static void monitor_parse(const char *str, const char *mode, bool pretty)
{
static int monitor_device_index = 0;
QemuOpts *opts;
const char *p;
char label[32];
if (strstart(str, "chardev:", &p)) {
snprintf(label, sizeof(label), "%s", p);
} else {
snprintf(label, sizeof(label), "compat_monitor%d",
monitor_device_index);
opts = qemu_chr_parse_compat(label, str, true);
if (!opts) {
error_report("parse error: %s", str);
exit(1);
}
}
opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
qemu_opt_set(opts, "mode", mode, &error_abort);
qemu_opt_set(opts, "chardev", label, &error_abort);
if (!strcmp(mode, "control")) {
qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
} else {
assert(pretty == false);
}
monitor_device_index++;
}
struct device_config {
enum {
DEV_USB, /* -usbdevice */
DEV_SERIAL, /* -serial */
DEV_PARALLEL, /* -parallel */
DEV_DEBUGCON, /* -debugcon */
DEV_GDB, /* -gdb, -s */
DEV_SCLP, /* s390 sclp */
} type;
const char *cmdline;
Location loc;
QTAILQ_ENTRY(device_config) next;
};
static QTAILQ_HEAD(, device_config) device_configs =
QTAILQ_HEAD_INITIALIZER(device_configs);
static void add_device_config(int type, const char *cmdline)
{
struct device_config *conf;
conf = g_malloc0(sizeof(*conf));
conf->type = type;
conf->cmdline = cmdline;
loc_save(&conf->loc);
QTAILQ_INSERT_TAIL(&device_configs, conf, next);
}
static int foreach_device_config(int type, int (*func)(const char *cmdline))
{
struct device_config *conf;
int rc;
QTAILQ_FOREACH(conf, &device_configs, next) {
if (conf->type != type)
continue;
loc_push_restore(&conf->loc);
rc = func(conf->cmdline);
loc_pop(&conf->loc);
if (rc) {
return rc;
}
}
return 0;
}
static void qemu_disable_default_devices(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
default_driver_check_json();
qemu_opts_foreach(qemu_find_opts("device"),
default_driver_check, NULL, NULL);
qemu_opts_foreach(qemu_find_opts("global"),
default_driver_check, NULL, NULL);
if (!vga_model && !default_vga) {
vga_interface_type = VGA_DEVICE;
vga_interface_created = true;
}
if (!has_defaults || machine_class->no_serial) {
default_serial = 0;
}
if (!has_defaults || machine_class->no_parallel) {
default_parallel = 0;
}
if (!has_defaults || machine_class->no_floppy) {
default_floppy = 0;
}
if (!has_defaults || machine_class->no_cdrom) {
default_cdrom = 0;
}
if (!has_defaults || machine_class->no_sdcard) {
default_sdcard = 0;
}
if (!has_defaults) {
default_audio = 0;
default_monitor = 0;
default_net = 0;
default_vga = 0;
} else {
if (default_net && machine_class->default_nic &&
!module_object_class_by_name(machine_class->default_nic)) {
warn_report("Default NIC '%s' is not available in this binary",
machine_class->default_nic);
default_net = 0;
}
}
}
static void qemu_setup_display(void)
{
if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
if (!qemu_display_find_default(&dpy)) {
dpy.type = DISPLAY_TYPE_NONE;
#if defined(CONFIG_VNC)
vnc_parse("localhost:0,to=99,id=default");
display_remote++;
#endif
}
}
if (dpy.type == DISPLAY_TYPE_DEFAULT) {
dpy.type = DISPLAY_TYPE_NONE;
}
qemu_display_early_init(&dpy);
}
static void qemu_create_default_devices(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
const char *vc = qemu_display_get_vc(&dpy);
if (is_daemonized()) {
/* According to documentation and historically, -nographic redirects
* serial port, parallel port and monitor to stdio, which does not work
* with -daemonize. We can redirect these to null instead, but since
* -nographic is legacy, let's just error out.
* We disallow -nographic only if all other ports are not redirected
* explicitly, to not break existing legacy setups which uses
* -nographic _and_ redirects all ports explicitly - this is valid
* usage, -nographic is just a no-op in this case.
*/
if (nographic
&& (default_parallel || default_serial || default_monitor)) {
error_report("-nographic cannot be used with -daemonize");
exit(1);
}
}
vl: revert behaviour for -display none Commit 1bec1cc0d ("ui/console: allow to override the default VC") changed the behaviour of the "-display none" option, so that it now creates a QEMU monitor on the terminal. "-display none" should not be tangled up with whether we create a monitor or a serial terminal; it should purely and only disable the graphical window. Changing its behaviour like this breaks command lines which, for example, use semihosting for their output and don't want a graphical window, as they now get a monitor they never asked for. It also breaks the command line we document for Xen in docs/system/i386/xen.html: $ ./qemu-system-x86_64 --accel kvm,xen-version=0x40011,kernel-irqchip=split \ -display none -chardev stdio,mux=on,id=char0,signal=off -mon char0 \ -device xen-console,chardev=char0 -drive file=${GUEST_IMAGE},if=xen qemu-system-x86_64: cannot use stdio by multiple character devices qemu-system-x86_64: could not connect serial device to character backend 'stdio' When qemu is compiled without PIXMAN, by default the serials aren't muxed with the monitor anymore on stdio. The serials are redirected to "null" instead, and the monitor isn't set up. Fixes: commit 1bec1cc0d ("ui/console: allow to override the default VC") Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Tested-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
2023-11-17 17:03:16 +03:00
if (nographic) {
if (default_parallel) {
add_device_config(DEV_PARALLEL, "null");
}
if (default_serial && default_monitor) {
add_device_config(DEV_SERIAL, "mon:stdio");
} else {
if (default_serial) {
add_device_config(DEV_SERIAL, "stdio");
}
if (default_monitor) {
monitor_parse("stdio", "readline", false);
}
}
} else {
if (default_serial) {
add_device_config(DEV_SERIAL, vc ?: "null");
}
if (default_parallel) {
add_device_config(DEV_PARALLEL, vc ?: "null");
}
if (default_monitor && vc) {
monitor_parse(vc, "readline", false);
}
}
if (default_net) {
QemuOptsList *net = qemu_find_opts("net");
qemu_opts_parse(net, "nic", true, &error_abort);
#ifdef CONFIG_SLIRP
qemu_opts_parse(net, "user", true, &error_abort);
#endif
}
/* If no default VGA is requested, the default is "none". */
if (default_vga) {
vga_model = get_default_vga_model(machine_class);
}
if (vga_model) {
select_vgahw(machine_class, vga_model);
}
}
static int serial_parse(const char *devname)
{
int index = num_serial_hds;
serial_hds = g_renew(Chardev *, serial_hds, index + 1);
system/vl.c: Fix handling of '-serial none -serial something' Currently if the user passes multiple -serial options on the command line, we mostly treat those as applying to the different serial devices in order, so that for example -serial stdio -serial file:filename will connect the first serial port to stdio and the second to the named file. The exception to this is the '-serial none' serial device type. This means "don't allocate this serial device", but a bug means that following -serial options are not correctly handled, so that -serial none -serial stdio has the unexpected effect that stdio is connected to the first serial port, not the second. This is a very long-standing bug that dates back at least as far as commit 998bbd74b9d81 from 2009. Make the 'none' serial type move forward in the indexing of serial devices like all the other serial types, so that any subsequent -serial options are correctly handled. Note that if your commandline mistakenly had a '-serial none' that was being overridden by a following '-serial something' option, you should delete the unnecessary '-serial none'. This will give you the same behaviour as before, on QEMU versions both with and without this bug fix. Cc: qemu-stable@nongnu.org Reported-by: Bohdan Kostiv <bohdan.kostiv@tii.ae> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20240122163607.459769-2-peter.maydell@linaro.org Fixes: 998bbd74b9d81 ("default devices: core code & serial lines") Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-01-22 19:36:06 +03:00
if (strcmp(devname, "none") == 0) {
/* Don't allocate a serial device for this index */
serial_hds[index] = NULL;
} else {
char label[32];
snprintf(label, sizeof(label), "serial%d", index);
serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
if (!serial_hds[index]) {
error_report("could not connect serial device"
" to character backend '%s'", devname);
return -1;
}
}
num_serial_hds++;
return 0;
}
Chardev *serial_hd(int i)
{
assert(i >= 0);
if (i < num_serial_hds) {
return serial_hds[i];
}
return NULL;
}
static int parallel_parse(const char *devname)
{
static int index = 0;
char label[32];
if (strcmp(devname, "none") == 0)
return 0;
if (index == MAX_PARALLEL_PORTS) {
error_report("too many parallel ports");
exit(1);
}
snprintf(label, sizeof(label), "parallel%d", index);
parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
if (!parallel_hds[index]) {
error_report("could not connect parallel device"
" to character backend '%s'", devname);
return -1;
}
index++;
return 0;
}
static int debugcon_parse(const char *devname)
{
QemuOpts *opts;
if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
error_report("invalid character backend '%s'", devname);
exit(1);
}
opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
if (!opts) {
error_report("already have a debugcon device");
exit(1);
}
qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
return 0;
}
well-defined listing order for machine types Commit 261747f1 ("vl: Use MachineClass instead of global QEMUMachine list") broke the ordering of the machine types in the user-visible output of qemu-system-XXXX -M \? This occurred because registration was rebased from a manually maintained linked list to GLib hash tables: qemu_register_machine() type_register() type_register_internal() type_table_add() g_hash_table_insert() and because the listing was rebased accordingly, from the traversal of the list to the traversal of the hash table (rendered as an ad-hoc list): machine_parse() object_class_get_list(TYPE_MACHINE) object_class_foreach() g_hash_table_foreach() The current order is a "random" one, for practical purposes, which is annoying for users. Introduce new members QEMUMachine.family and MachineClass.family, allowing machine types to be "clustered". Introduce a comparator function that establishes a total ordering between machine types, ordering machine types in the same family next to each other. In machine_parse(), list the supported machine types sorted with the comparator function. The comparator function: - sorts whole families before standalone machine types, - sorts whole families between each other in alphabetically increasing order, - sorts machine types inside the same family in alphabetically decreasing order, - sorts standalone machine types between each other in alphabetically increasing order. After this patch, all machine types are considered standalone, and accordingly, the output is alphabetically ascending. This will be refined in the following patches. Effects on the x86_64 output: Before: > Supported machines are: > pc-0.13 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-2.0 Standard PC (i440FX + PIIX, 1996) > pc-1.0 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-2.1 Standard PC (i440FX + PIIX, 1996) > pc-q35-1.7 Standard PC (Q35 + ICH9, 2009) > pc-1.1 Standard PC (i440FX + PIIX, 1996) > pc-0.14 Standard PC (i440FX + PIIX, 1996) > pc-q35-2.0 Standard PC (Q35 + ICH9, 2009) > pc-i440fx-1.4 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-1.5 Standard PC (i440FX + PIIX, 1996) > pc-0.15 Standard PC (i440FX + PIIX, 1996) > pc-q35-1.4 Standard PC (Q35 + ICH9, 2009) > isapc ISA-only PC > pc Standard PC (i440FX + PIIX, 1996) (alias of pc-i440fx-2.2) > pc-i440fx-2.2 Standard PC (i440FX + PIIX, 1996) (default) > pc-1.2 Standard PC (i440FX + PIIX, 1996) > pc-0.10 Standard PC (i440FX + PIIX, 1996) > pc-0.11 Standard PC (i440FX + PIIX, 1996) > pc-q35-2.1 Standard PC (Q35 + ICH9, 2009) > q35 Standard PC (Q35 + ICH9, 2009) (alias of pc-q35-2.2) > pc-q35-2.2 Standard PC (Q35 + ICH9, 2009) > pc-i440fx-1.6 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-1.7 Standard PC (i440FX + PIIX, 1996) > none empty machine > pc-q35-1.5 Standard PC (Q35 + ICH9, 2009) > pc-q35-1.6 Standard PC (Q35 + ICH9, 2009) > pc-0.12 Standard PC (i440FX + PIIX, 1996) > pc-1.3 Standard PC (i440FX + PIIX, 1996) After: > Supported machines are: > isapc ISA-only PC > none empty machine > pc-0.10 Standard PC (i440FX + PIIX, 1996) > pc-0.11 Standard PC (i440FX + PIIX, 1996) > pc-0.12 Standard PC (i440FX + PIIX, 1996) > pc-0.13 Standard PC (i440FX + PIIX, 1996) > pc-0.14 Standard PC (i440FX + PIIX, 1996) > pc-0.15 Standard PC (i440FX + PIIX, 1996) > pc-1.0 Standard PC (i440FX + PIIX, 1996) > pc-1.1 Standard PC (i440FX + PIIX, 1996) > pc-1.2 Standard PC (i440FX + PIIX, 1996) > pc-1.3 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-1.4 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-1.5 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-1.6 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-1.7 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-2.0 Standard PC (i440FX + PIIX, 1996) > pc-i440fx-2.1 Standard PC (i440FX + PIIX, 1996) > pc Standard PC (i440FX + PIIX, 1996) (alias of pc-i440fx-2.2) > pc-i440fx-2.2 Standard PC (i440FX + PIIX, 1996) (default) > pc-q35-1.4 Standard PC (Q35 + ICH9, 2009) > pc-q35-1.5 Standard PC (Q35 + ICH9, 2009) > pc-q35-1.6 Standard PC (Q35 + ICH9, 2009) > pc-q35-1.7 Standard PC (Q35 + ICH9, 2009) > pc-q35-2.0 Standard PC (Q35 + ICH9, 2009) > pc-q35-2.1 Standard PC (Q35 + ICH9, 2009) > q35 Standard PC (Q35 + ICH9, 2009) (alias of pc-q35-2.2) > pc-q35-2.2 Standard PC (Q35 + ICH9, 2009) Effects on the aarch64 output: Before: > Supported machines are: > lm3s811evb Stellaris LM3S811EVB > canon-a1100 Canon PowerShot A1100 IS > vexpress-a15 ARM Versatile Express for Cortex-A15 > vexpress-a9 ARM Versatile Express for Cortex-A9 > xilinx-zynq-a9 Xilinx Zynq Platform Baseboard for Cortex-A9 > connex Gumstix Connex (PXA255) > n800 Nokia N800 tablet aka. RX-34 (OMAP2420) > lm3s6965evb Stellaris LM3S6965EVB > versatileab ARM Versatile/AB (ARM926EJ-S) > borzoi Borzoi PDA (PXA270) > tosa Tosa PDA (PXA255) > cheetah Palm Tungsten|E aka. Cheetah PDA (OMAP310) > midway Calxeda Midway (ECX-2000) > mainstone Mainstone II (PXA27x) > n810 Nokia N810 tablet aka. RX-44 (OMAP2420) > terrier Terrier PDA (PXA270) > highbank Calxeda Highbank (ECX-1000) > cubieboard cubietech cubieboard > sx1-v1 Siemens SX1 (OMAP310) V1 > sx1 Siemens SX1 (OMAP310) V2 > realview-eb-mpcore ARM RealView Emulation Baseboard (ARM11MPCore) > kzm ARM KZM Emulation Baseboard (ARM1136) > akita Akita PDA (PXA270) > z2 Zipit Z2 (PXA27x) > musicpal Marvell 88w8618 / MusicPal (ARM926EJ-S) > realview-pb-a8 ARM RealView Platform Baseboard for Cortex-A8 > versatilepb ARM Versatile/PB (ARM926EJ-S) > realview-eb ARM RealView Emulation Baseboard (ARM926EJ-S) > realview-pbx-a9 ARM RealView Platform Baseboard Explore for Cortex-A9 > spitz Spitz PDA (PXA270) > none empty machine > virt ARM Virtual Machine > collie Collie PDA (SA-1110) > smdkc210 Samsung SMDKC210 board (Exynos4210) > verdex Gumstix Verdex (PXA270) > nuri Samsung NURI board (Exynos4210) > integratorcp ARM Integrator/CP (ARM926EJ-S) After: > Supported machines are: > akita Akita PDA (PXA270) > borzoi Borzoi PDA (PXA270) > canon-a1100 Canon PowerShot A1100 IS > cheetah Palm Tungsten|E aka. Cheetah PDA (OMAP310) > collie Collie PDA (SA-1110) > connex Gumstix Connex (PXA255) > cubieboard cubietech cubieboard > highbank Calxeda Highbank (ECX-1000) > integratorcp ARM Integrator/CP (ARM926EJ-S) > kzm ARM KZM Emulation Baseboard (ARM1136) > lm3s6965evb Stellaris LM3S6965EVB > lm3s811evb Stellaris LM3S811EVB > mainstone Mainstone II (PXA27x) > midway Calxeda Midway (ECX-2000) > musicpal Marvell 88w8618 / MusicPal (ARM926EJ-S) > n800 Nokia N800 tablet aka. RX-34 (OMAP2420) > n810 Nokia N810 tablet aka. RX-44 (OMAP2420) > none empty machine > nuri Samsung NURI board (Exynos4210) > realview-eb ARM RealView Emulation Baseboard (ARM926EJ-S) > realview-eb-mpcore ARM RealView Emulation Baseboard (ARM11MPCore) > realview-pb-a8 ARM RealView Platform Baseboard for Cortex-A8 > realview-pbx-a9 ARM RealView Platform Baseboard Explore for Cortex-A9 > smdkc210 Samsung SMDKC210 board (Exynos4210) > spitz Spitz PDA (PXA270) > sx1 Siemens SX1 (OMAP310) V2 > sx1-v1 Siemens SX1 (OMAP310) V1 > terrier Terrier PDA (PXA270) > tosa Tosa PDA (PXA255) > verdex Gumstix Verdex (PXA270) > versatileab ARM Versatile/AB (ARM926EJ-S) > versatilepb ARM Versatile/PB (ARM926EJ-S) > vexpress-a15 ARM Versatile Express for Cortex-A15 > vexpress-a9 ARM Versatile Express for Cortex-A9 > virt ARM Virtual Machine > xilinx-zynq-a9 Xilinx Zynq Platform Baseboard for Cortex-A9 > z2 Zipit Z2 (PXA27x) RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1145042 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel.a@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2014-09-23 00:38:35 +04:00
static gint machine_class_cmp(gconstpointer a, gconstpointer b)
{
const MachineClass *mc1 = a, *mc2 = b;
int res;
if (mc1->family == NULL) {
if (mc2->family == NULL) {
/* Compare standalone machine types against each other; they sort
* in increasing order.
*/
return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
object_class_get_name(OBJECT_CLASS(mc2)));
}
/* Standalone machine types sort after families. */
return 1;
}
if (mc2->family == NULL) {
/* Families sort before standalone machine types. */
return -1;
}
/* Families sort between each other alphabetically increasingly. */
res = strcmp(mc1->family, mc2->family);
if (res != 0) {
return res;
}
/* Within the same family, machine types sort in decreasing order. */
return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
object_class_get_name(OBJECT_CLASS(mc1)));
}
static void machine_help_func(const QDict *qdict)
{
g_autoptr(GSList) machines = NULL;
GSList *el;
const char *type = qdict_get_try_str(qdict, "type");
machines = object_class_get_list(TYPE_MACHINE, false);
if (type) {
ObjectClass *machine_class = OBJECT_CLASS(find_machine(type, machines));
if (machine_class) {
type_print_class_properties(object_class_get_name(machine_class));
return;
}
}
printf("Supported machines are:\n");
machines = g_slist_sort(machines, machine_class_cmp);
for (el = machines; el; el = el->next) {
MachineClass *mc = el->data;
if (mc->alias) {
printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
}
printf("%-20s %s%s%s\n", mc->name, mc->desc,
mc->is_default ? " (default)" : "",
mc->deprecation_reason ? " (deprecated)" : "");
}
}
static void
machine_merge_property(const char *propname, QDict *prop, Error **errp)
{
QDict *opts;
opts = qdict_new();
/* Preserve the caller's reference to prop. */
qobject_ref(prop);
qdict_put(opts, propname, prop);
keyval_merge(machine_opts_dict, opts, errp);
qobject_unref(opts);
}
static void
machine_parse_property_opt(QemuOptsList *opts_list, const char *propname,
const char *arg)
{
QDict *prop = NULL;
bool help = false;
prop = keyval_parse(arg, opts_list->implied_opt_name, &help, &error_fatal);
if (help) {
qemu_opts_print_help(opts_list, true);
exit(0);
}
machine_merge_property(propname, prop, &error_fatal);
qobject_unref(prop);
}
static const char *pid_file;
struct UnlinkPidfileNotifier {
Notifier notifier;
char *pid_file_realpath;
};
static struct UnlinkPidfileNotifier qemu_unlink_pidfile_notifier;
static void qemu_unlink_pidfile(Notifier *n, void *data)
{
struct UnlinkPidfileNotifier *upn;
upn = DO_UPCAST(struct UnlinkPidfileNotifier, notifier, n);
unlink(upn->pid_file_realpath);
}
static const QEMUOption *lookup_opt(int argc, char **argv,
const char **poptarg, int *poptind)
{
const QEMUOption *popt;
int optind = *poptind;
char *r = argv[optind];
const char *optarg;
loc_set_cmdline(argv, optind, 1);
optind++;
/* Treat --foo the same as -foo. */
if (r[1] == '-')
r++;
popt = qemu_options;
for(;;) {
if (!popt->name) {
error_report("invalid option");
exit(1);
}
if (!strcmp(popt->name, r + 1))
break;
popt++;
}
if (popt->flags & HAS_ARG) {
if (optind >= argc) {
error_report("requires an argument");
exit(1);
}
optarg = argv[optind++];
loc_set_cmdline(argv, optind - 2, 2);
} else {
optarg = NULL;
}
*poptarg = optarg;
*poptind = optind;
return popt;
}
static MachineClass *select_machine(QDict *qdict, Error **errp)
{
const char *machine_type = qdict_get_try_str(qdict, "type");
GSList *machines = object_class_get_list(TYPE_MACHINE, false);
MachineClass *machine_class;
Error *local_err = NULL;
if (machine_type) {
machine_class = find_machine(machine_type, machines);
qdict_del(qdict, "type");
if (!machine_class) {
error_setg(&local_err, "unsupported machine type");
}
} else {
machine_class = find_default_machine(machines);
if (!machine_class) {
error_setg(&local_err, "No machine specified, and there is no default");
}
}
g_slist_free(machines);
if (local_err) {
error_append_hint(&local_err, "Use -machine help to list supported machines\n");
error_propagate(errp, local_err);
}
return machine_class;
}
static int object_parse_property_opt(Object *obj,
const char *name, const char *value,
const char *skip, Error **errp)
{
if (g_str_equal(name, skip)) {
return 0;
}
error: Eliminate error_propagate() with Coccinelle, part 1 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. Convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... return ... } to if (!foo(..., errp)) { ... ... return ... } where nothing else needs @err. Coccinelle script: @rule1 forall@ identifier fun, err, errp, lbl; expression list args, args2; binary operator op; constant c1, c2; symbol false; @@ if ( ( - fun(args, &err, args2) + fun(args, errp, args2) | - !fun(args, &err, args2) + !fun(args, errp, args2) | - fun(args, &err, args2) op c1 + fun(args, errp, args2) op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; ) } @rule2 forall@ identifier fun, err, errp, lbl; expression list args, args2; expression var; binary operator op; constant c1, c2; symbol false; @@ - var = fun(args, &err, args2); + var = fun(args, errp, args2); ... when != err if ( ( var | !var | var op c1 ) ) { ... when != err when != lbl: when strict - error_propagate(errp, err); ... when != err ( return; | return c2; | return false; | return var; ) } @depends on rule1 || rule2@ identifier err; @@ - Error *err = NULL; ... when != err Not exactly elegant, I'm afraid. The "when != lbl:" is necessary to avoid transforming if (fun(args, &err)) { goto out } ... out: error_propagate(errp, err); even though other paths to label out still need the error_propagate(). For an actual example, see sclp_realize(). Without the "when strict", Coccinelle transforms vfio_msix_setup(), incorrectly. I don't know what exactly "when strict" does, only that it helps here. The match of return is narrower than what I want, but I can't figure out how to express "return where the operand doesn't use @err". For an example where it's too narrow, see vfio_intx_enable(). Silently fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Converted manually. Line breaks tidied up manually. One nested declaration of @local_err deleted manually. Preexisting unwanted blank line dropped in hw/riscv/sifive_e.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200707160613.848843-35-armbru@redhat.com>
2020-07-07 19:06:02 +03:00
if (!object_property_parse(obj, name, value, errp)) {
return -1;
}
return 0;
}
/* *Non*recursively replace underscores with dashes in QDict keys. */
static void keyval_dashify(QDict *qdict, Error **errp)
{
const QDictEntry *ent, *next;
char *p;
for (ent = qdict_first(qdict); ent; ent = next) {
g_autofree char *new_key = NULL;
next = qdict_next(qdict, ent);
if (!strchr(ent->key, '_')) {
continue;
}
new_key = g_strdup(ent->key);
for (p = new_key; *p; p++) {
if (*p == '_') {
*p = '-';
}
}
if (qdict_haskey(qdict, new_key)) {
error_setg(errp, "Conflict between '%s' and '%s'", ent->key, new_key);
return;
}
qobject_ref(ent->value);
qdict_put_obj(qdict, new_key, ent->value);
qdict_del(qdict, ent->key);
}
}
static void qemu_apply_legacy_machine_options(QDict *qdict)
{
const char *value;
QObject *prop;
keyval_dashify(qdict, &error_fatal);
/* Legacy options do not correspond to MachineState properties. */
value = qdict_get_try_str(qdict, "accel");
if (value) {
accelerators = g_strdup(value);
qdict_del(qdict, "accel");
}
value = qdict_get_try_str(qdict, "igd-passthru");
if (value) {
object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), "igd-passthru", value,
false);
qdict_del(qdict, "igd-passthru");
}
value = qdict_get_try_str(qdict, "kvm-shadow-mem");
if (value) {
object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), "kvm-shadow-mem", value,
false);
qdict_del(qdict, "kvm-shadow-mem");
}
value = qdict_get_try_str(qdict, "kernel-irqchip");
if (value) {
object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), "kernel-irqchip", value,
false);
object_register_sugar_prop(ACCEL_CLASS_NAME("whpx"), "kernel-irqchip", value,
false);
qdict_del(qdict, "kernel-irqchip");
}
value = qdict_get_try_str(qdict, "memory-backend");
if (value) {
if (mem_path) {
error_report("'-mem-path' can't be used together with"
"'-machine memory-backend'");
exit(EXIT_FAILURE);
}
/* Resolved later. */
ram_memdev_id = g_strdup(value);
qdict_del(qdict, "memory-backend");
}
prop = qdict_get(qdict, "memory");
if (prop) {
have_custom_ram_size =
qobject_type(prop) == QTYPE_QDICT &&
qdict_haskey(qobject_to(QDict, prop), "size");
}
}
static void object_option_foreach_add(bool (*type_opt_predicate)(const char *))
{
ObjectOption *opt, *next;
QTAILQ_FOREACH_SAFE(opt, &object_opts, next, next) {
const char *type = ObjectType_str(opt->opts->qom_type);
if (type_opt_predicate(type)) {
user_creatable_add_qapi(opt->opts, &error_fatal);
qapi_free_ObjectOptions(opt->opts);
QTAILQ_REMOVE(&object_opts, opt, next);
g_free(opt);
}
}
}
static void object_option_add_visitor(Visitor *v)
{
ObjectOption *opt = g_new0(ObjectOption, 1);
visit_type_ObjectOptions(v, NULL, &opt->opts, &error_fatal);
QTAILQ_INSERT_TAIL(&object_opts, opt, next);
}
static void object_option_parse(const char *str)
{
QemuOpts *opts;
const char *type;
Visitor *v;
if (str[0] == '{') {
QObject *obj = qobject_from_json(str, &error_fatal);
v = qobject_input_visitor_new(obj);
qobject_unref(obj);
} else {
opts = qemu_opts_parse_noisily(qemu_find_opts("object"),
str, true);
if (!opts) {
exit(1);
}
type = qemu_opt_get(opts, "qom-type");
if (!type) {
error_setg(&error_fatal, QERR_MISSING_PARAMETER, "qom-type");
}
if (user_creatable_print_help(type, opts)) {
exit(0);
}
v = opts_visitor_new(opts);
}
object_option_add_visitor(v);
visit_free(v);
}
vl: Allow ThreadContext objects to be created before the sandbox option Currently, there is no way to configure a CPU affinity inside QEMU when the sandbox option disables it for QEMU as a whole, for example, via: -sandbox enable=on,resourcecontrol=deny While ThreadContext objects can be created on the QEMU commandline and the CPU affinity can be configured externally via the thread-id, this is insufficient if a ThreadContext with a certain CPU affinity is already required during QEMU startup, before we can intercept QEMU and configure the CPU affinity. Blocking sched_setaffinity() was introduced in 24f8cdc57224 ("seccomp: add resourcecontrol argument to command line"), "to avoid any bigger of the process". However, we only care about once QEMU is running, not when the instance starting QEMU explicitly requests a certain CPU affinity on the QEMU comandline. Right now, for NUMA-aware preallocation of memory backends used for initial machine RAM, one has to: 1) Start QEMU with the memory-backend with "prealloc=off" 2) Pause QEMU before it starts the guest (-S) 3) Create ThreadContext, configure the CPU affinity using the thread-id 4) Configure the ThreadContext as "prealloc-context" of the memory backend 5) Trigger preallocation by setting "prealloc=on" To simplify this handling especially for initial machine RAM, allow creation of ThreadContext objects before parsing sandbox options, such that the CPU affinity requested on the QEMU commandline alongside the sandbox option can be set. As ThreadContext objects essentially only create a persistent context thread and set the CPU affinity, this is easily possible. With this change, we can create a ThreadContext with a CPU affinity on the QEMU commandline and use it for preallocation of memory backends glued to the machine (simplified example): To make "-name debug-threads=on" keep working as expected for the context threads, perform earlier parsing of "-name". qemu-system-x86_64 -m 1G \ -object thread-context,id=tc1,cpu-affinity=3-4 \ -object memory-backend-ram,id=pc.ram,size=1G,prealloc=on,prealloc-threads=2,prealloc-context=tc1 \ -machine memory-backend=pc.ram \ -S -monitor stdio -sandbox enable=on,resourcecontrol=deny And while we can query the current CPU affinity: (qemu) qom-get tc1 cpu-affinity [ 3, 4 ] We can no longer change it from QEMU directly: (qemu) qom-set tc1 cpu-affinity 1-2 Error: Setting CPU affinity failed: Operation not permitted Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Message-Id: <20221014134720.168738-8-david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2022-10-14 16:47:20 +03:00
/*
* Very early object creation, before the sandbox options have been activated.
*/
static bool object_create_pre_sandbox(const char *type)
{
/*
* Objects should in general not get initialized "too early" without
* a reason. If you add one, state the reason in a comment!
*/
/*
* Reason: -sandbox on,resourcecontrol=deny disallows setting CPU
* affinity of threads.
*/
if (g_str_equal(type, "thread-context")) {
return true;
}
return false;
}
/*
* Initial object creation happens before all other
* QEMU data types are created. The majority of objects
* can be created at this point. The rng-egd object
* cannot be created here, as it depends on the chardev
* already existing.
*/
static bool object_create_early(const char *type)
{
/*
* Objects should not be made "delayed" without a reason. If you
* add one, state the reason in a comment!
*/
vl: Allow ThreadContext objects to be created before the sandbox option Currently, there is no way to configure a CPU affinity inside QEMU when the sandbox option disables it for QEMU as a whole, for example, via: -sandbox enable=on,resourcecontrol=deny While ThreadContext objects can be created on the QEMU commandline and the CPU affinity can be configured externally via the thread-id, this is insufficient if a ThreadContext with a certain CPU affinity is already required during QEMU startup, before we can intercept QEMU and configure the CPU affinity. Blocking sched_setaffinity() was introduced in 24f8cdc57224 ("seccomp: add resourcecontrol argument to command line"), "to avoid any bigger of the process". However, we only care about once QEMU is running, not when the instance starting QEMU explicitly requests a certain CPU affinity on the QEMU comandline. Right now, for NUMA-aware preallocation of memory backends used for initial machine RAM, one has to: 1) Start QEMU with the memory-backend with "prealloc=off" 2) Pause QEMU before it starts the guest (-S) 3) Create ThreadContext, configure the CPU affinity using the thread-id 4) Configure the ThreadContext as "prealloc-context" of the memory backend 5) Trigger preallocation by setting "prealloc=on" To simplify this handling especially for initial machine RAM, allow creation of ThreadContext objects before parsing sandbox options, such that the CPU affinity requested on the QEMU commandline alongside the sandbox option can be set. As ThreadContext objects essentially only create a persistent context thread and set the CPU affinity, this is easily possible. With this change, we can create a ThreadContext with a CPU affinity on the QEMU commandline and use it for preallocation of memory backends glued to the machine (simplified example): To make "-name debug-threads=on" keep working as expected for the context threads, perform earlier parsing of "-name". qemu-system-x86_64 -m 1G \ -object thread-context,id=tc1,cpu-affinity=3-4 \ -object memory-backend-ram,id=pc.ram,size=1G,prealloc=on,prealloc-threads=2,prealloc-context=tc1 \ -machine memory-backend=pc.ram \ -S -monitor stdio -sandbox enable=on,resourcecontrol=deny And while we can query the current CPU affinity: (qemu) qom-get tc1 cpu-affinity [ 3, 4 ] We can no longer change it from QEMU directly: (qemu) qom-set tc1 cpu-affinity 1-2 Error: Setting CPU affinity failed: Operation not permitted Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Message-Id: <20221014134720.168738-8-david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2022-10-14 16:47:20 +03:00
/* Reason: already created. */
if (object_create_pre_sandbox(type)) {
return false;
}
/* Reason: property "chardev" */
if (g_str_equal(type, "rng-egd") ||
g_str_equal(type, "qtest")) {
return false;
}
#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
/* Reason: cryptodev-vhost-user property "chardev" */
if (g_str_equal(type, "cryptodev-vhost-user")) {
return false;
}
#endif
/* Reason: vhost-user-blk-server property "node-name" */
if (g_str_equal(type, "vhost-user-blk-server")) {
return false;
}
/*
* Reason: filter-* property "netdev" etc.
*/
if (g_str_equal(type, "filter-buffer") ||
g_str_equal(type, "filter-dump") ||
g_str_equal(type, "filter-mirror") ||
colo-compare: introduce colo compare initialization This a COLO net ascii figure: Primary qemu Secondary qemu +--------------------------------------------------------------+ +----------------------------------------------------------------+ | +----------------------------------------------------------+ | | +-----------------------------------------------------------+ | | | | | | | | | | | guest | | | | guest | | | | | | | | | | | +-------^--------------------------+-----------------------+ | | +---------------------+--------+----------------------------+ | | | | | | ^ | | | | | | | | | | | | +------------------------------------------------------+ | | | | |netfilter| | | | | | netfilter | | | | +----------+ +----------------------------+ | | | +-----------------------------------------------------------+ | | | | | | | out | | | | | | filter excute order | | | | | | +-----------------------------+ | | | | | | +-------------------> | | | | | | | | | | | | | | | | TCP | | | | +-----+--+-+ +-----v----+ +-----v----+ |pri +----+----+sec| | | | +------------+ +---+----+---v+rewriter++ +------------+ | | | | | | | | | | |in | |in | | | | | | | | | | | | | | | | filter | | filter | | filter +------> colo <------+ +--------> filter +--> adjust | adjust +--> filter | | | | | | mirror | |redirector| |redirector| | | compare | | | | | | redirector | | ack | seq | | redirector | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +----^-----+ +----+-----+ +----------+ | +---------+ | | | | +------------+ +--------+--------------+ +---+--------+ | | | | | tx | rx rx | | | | | tx all | rx | | | | | | | | | | +-----------------------------------------------------------+ | | | | +--------------+ | | | | | | | | | filter excute order | | | | | | | | | | +----------------> | | | +--------------------------------------------------------+ | | +-----------------------------------------+ | | | | | | | | | +--------------------------------------------------------------+ +----------------------------------------------------------------+ |guest receive | guest send | | +--------+----------------------------v------------------------+ | | NOTE: filter direction is rx/tx/all | tap | rx:receive packets sent to the netdev | | tx:receive packets sent by the netdev +--------------------------------------------------------------+ In COLO-compare, we do packet comparing job. Packets coming from the primary char indev will be sent to outdev. Packets coming from the secondary char dev will be dropped after comparing. colo-comapre need two input chardev and one output chardev: primary_in=chardev1-id (source: primary send packet) secondary_in=chardev2-id (source: secondary send packet) outdev=chardev3-id usage: primary: -netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown -device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66 -chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait -chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait -chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait -chardev socket,id=compare0-0,host=3.3.3.3,port=9001 -chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait -chardev socket,id=compare_out0,host=3.3.3.3,port=9005 -object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0 -object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out -object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0 -object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0 secondary: -netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,down script=/etc/qemu-ifdown -device e1000,netdev=hn0,mac=52:a4:00:12:78:66 -chardev socket,id=red0,host=3.3.3.3,port=9003 -chardev socket,id=red1,host=3.3.3.3,port=9004 -object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0 -object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1 Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-09-27 05:22:26 +03:00
g_str_equal(type, "filter-redirector") ||
g_str_equal(type, "colo-compare") ||
g_str_equal(type, "filter-rewriter") ||
g_str_equal(type, "filter-replay")) {
return false;
}
/*
* Allocation of large amounts of memory may delay
* chardev initialization for too long, and trigger timeouts
* on software that waits for a monitor socket to be created
*/
if (g_str_has_prefix(type, "memory-backend-")) {
return false;
}
return true;
}
static void qemu_apply_machine_options(QDict *qdict)
{
object_set_properties_from_keyval(OBJECT(current_machine), qdict, false, &error_fatal);
semihosting: Allow optional use of semihosting from userspace Currently our semihosting implementations generally prohibit use of semihosting calls in system emulation from the guest userspace. This is a very long standing behaviour justified originally "to provide some semblance of security" (since code with access to the semihosting ABI can do things like read and write arbitrary files on the host system). However, it is sometimes useful to be able to run trusted guest code which performs semihosting calls from guest userspace, notably for test code. Add a command line suboption to the existing semihosting-config option group so that you can explicitly opt in to semihosting from guest userspace with -semihosting-config userspace=on (There is no equivalent option for the user-mode emulator, because there by definition all code runs in userspace and has access to semihosting already.) This commit adds the infrastructure for the command line option and adds a bool 'is_user' parameter to the function semihosting_userspace_enabled() that target code can use to check whether it should be permitting the semihosting call for userspace. It mechanically makes all the callsites pass 'false', so they continue checking "is semihosting enabled in general". Subsequent commits will make each target that implements semihosting honour the userspace=on option by passing the correct value and removing whatever "don't do this for userspace" checking they were doing by hand. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220822141230.3658237-2-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-22 17:12:24 +03:00
if (semihosting_enabled(false) && !semihosting_get_argc()) {
/* fall back to the -kernel/-append */
semihosting_arg_fallback(current_machine->kernel_filename, current_machine->kernel_cmdline);
}
if (current_machine->smp.cpus > 1) {
replay_add_blocker("multiple CPUs");
}
}
static void qemu_create_early_backends(void)
{
MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
#if defined(CONFIG_SDL)
const bool use_sdl = (dpy.type == DISPLAY_TYPE_SDL);
#else
const bool use_sdl = false;
#endif
#if defined(CONFIG_GTK)
const bool use_gtk = (dpy.type == DISPLAY_TYPE_GTK);
#else
const bool use_gtk = false;
#endif
if (dpy.has_window_close && !use_gtk && !use_sdl) {
error_report("window-close is only valid for GTK and SDL, "
"ignoring option");
}
qemu_console_early_init();
if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) {
#if defined(CONFIG_OPENGL)
error_report("OpenGL is not supported by the display");
#else
error_report("OpenGL support is disabled");
#endif
exit(1);
}
object_option_foreach_add(object_create_early);
/* spice needs the timers to be initialized by this point */
/* spice must initialize before audio as it changes the default audiodev */
/* spice must initialize before chardevs (for spicevmc and spiceport) */
qemu_spice.init();
qemu_opts_foreach(qemu_find_opts("chardev"),
chardev_init_func, NULL, &error_fatal);
#ifdef CONFIG_VIRTFS
qemu_opts_foreach(qemu_find_opts("fsdev"),
fsdev_init_func, NULL, &error_fatal);
#endif
/*
* Note: we need to create audio and block backends before
* setting machine properties, so they can be referred to.
*/
configure_blockdev(&bdo_queue, machine_class, snapshot);
audio_init_audiodevs();
if (default_audio) {
audio_create_default_audiodevs();
}
}
/*
* The remainder of object creation happens after the
* creation of chardev, fsdev, net clients and device data types.
*/
static bool object_create_late(const char *type)
{
vl: Allow ThreadContext objects to be created before the sandbox option Currently, there is no way to configure a CPU affinity inside QEMU when the sandbox option disables it for QEMU as a whole, for example, via: -sandbox enable=on,resourcecontrol=deny While ThreadContext objects can be created on the QEMU commandline and the CPU affinity can be configured externally via the thread-id, this is insufficient if a ThreadContext with a certain CPU affinity is already required during QEMU startup, before we can intercept QEMU and configure the CPU affinity. Blocking sched_setaffinity() was introduced in 24f8cdc57224 ("seccomp: add resourcecontrol argument to command line"), "to avoid any bigger of the process". However, we only care about once QEMU is running, not when the instance starting QEMU explicitly requests a certain CPU affinity on the QEMU comandline. Right now, for NUMA-aware preallocation of memory backends used for initial machine RAM, one has to: 1) Start QEMU with the memory-backend with "prealloc=off" 2) Pause QEMU before it starts the guest (-S) 3) Create ThreadContext, configure the CPU affinity using the thread-id 4) Configure the ThreadContext as "prealloc-context" of the memory backend 5) Trigger preallocation by setting "prealloc=on" To simplify this handling especially for initial machine RAM, allow creation of ThreadContext objects before parsing sandbox options, such that the CPU affinity requested on the QEMU commandline alongside the sandbox option can be set. As ThreadContext objects essentially only create a persistent context thread and set the CPU affinity, this is easily possible. With this change, we can create a ThreadContext with a CPU affinity on the QEMU commandline and use it for preallocation of memory backends glued to the machine (simplified example): To make "-name debug-threads=on" keep working as expected for the context threads, perform earlier parsing of "-name". qemu-system-x86_64 -m 1G \ -object thread-context,id=tc1,cpu-affinity=3-4 \ -object memory-backend-ram,id=pc.ram,size=1G,prealloc=on,prealloc-threads=2,prealloc-context=tc1 \ -machine memory-backend=pc.ram \ -S -monitor stdio -sandbox enable=on,resourcecontrol=deny And while we can query the current CPU affinity: (qemu) qom-get tc1 cpu-affinity [ 3, 4 ] We can no longer change it from QEMU directly: (qemu) qom-set tc1 cpu-affinity 1-2 Error: Setting CPU affinity failed: Operation not permitted Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Message-Id: <20221014134720.168738-8-david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2022-10-14 16:47:20 +03:00
return !object_create_early(type) && !object_create_pre_sandbox(type);
}
static void qemu_create_late_backends(void)
{
if (qtest_chrdev) {
qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
}
net_init_clients();
object_option_foreach_add(object_create_late);
/*
* Wait for any outstanding memory prealloc from created memory
* backends to complete.
*/
if (!qemu_finish_async_prealloc_mem(&error_fatal)) {
exit(1);
}
if (tpm_init() < 0) {
exit(1);
}
qemu_opts_foreach(qemu_find_opts("mon"),
mon_init_func, NULL, &error_fatal);
if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
exit(1);
if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
exit(1);
if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
exit(1);
/* now chardevs have been created we may have semihosting to connect */
qemu_semihosting_chardev_init();
}
static void qemu_resolve_machine_memdev(void)
{
if (ram_memdev_id) {
Object *backend;
ram_addr_t backend_size;
backend = object_resolve_path_type(ram_memdev_id,
TYPE_MEMORY_BACKEND, NULL);
if (!backend) {
error_report("Memory backend '%s' not found", ram_memdev_id);
exit(EXIT_FAILURE);
}
if (!have_custom_ram_size) {
backend_size = object_property_get_uint(backend, "size", &error_abort);
current_machine->ram_size = backend_size;
}
object_property_set_link(OBJECT(current_machine),
"memory-backend", backend, &error_fatal);
}
}
static void parse_memory_options(void)
{
QemuOpts *opts = qemu_find_opts_singleton("memory");
QDict *dict, *prop;
const char *mem_str;
Location loc;
loc_push_none(&loc);
qemu_opts_loc_restore(opts);
prop = qdict_new();
if (qemu_opt_get_size(opts, "size", 0) != 0) {
/* Fix up legacy suffix-less format */
mem_str = qemu_opt_get(opts, "size");
if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
g_autofree char *mib_str = g_strdup_printf("%sM", mem_str);
qdict_put_str(prop, "size", mib_str);
} else {
qdict_put_str(prop, "size", mem_str);
}
}
if (qemu_opt_get(opts, "maxmem")) {
qdict_put_str(prop, "max-size", qemu_opt_get(opts, "maxmem"));
}
if (qemu_opt_get(opts, "slots")) {
qdict_put_str(prop, "slots", qemu_opt_get(opts, "slots"));
}
dict = qdict_new();
qdict_put(dict, "memory", prop);
keyval_merge(machine_opts_dict, dict, &error_fatal);
qobject_unref(dict);
loc_pop(&loc);
}
static void qemu_create_machine(QDict *qdict)
{
MachineClass *machine_class = select_machine(qdict, &error_fatal);
object_set_machine_compat_props(machine_class->compat_props);
current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class)));
object_property_add_child(object_get_root(), "machine",
OBJECT(current_machine));
object_property_add_child(container_get(OBJECT(current_machine),
"/unattached"),
"sysbus", OBJECT(sysbus_get_default()));
if (machine_class->minimum_page_bits) {
if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) {
/* This would be a board error: specifying a minimum smaller than
* a target's compile-time fixed setting.
*/
g_assert_not_reached();
}
}
cpu_exec_init_all();
if (machine_class->hw_version) {
qemu_set_hw_version(machine_class->hw_version);
}
/*
* Get the default machine options from the machine if it is not already
* specified either by the configuration file or by the command line.
*/
if (machine_class->default_machine_opts) {
QDict *default_opts =
keyval_parse(machine_class->default_machine_opts, NULL, NULL,
&error_abort);
qemu_apply_legacy_machine_options(default_opts);
object_set_properties_from_keyval(OBJECT(current_machine), default_opts,
false, &error_abort);
qobject_unref(default_opts);
}
}
static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
{
GlobalProperty *g;
g = g_malloc0(sizeof(*g));
g->driver = qemu_opt_get(opts, "driver");
g->property = qemu_opt_get(opts, "property");
g->value = qemu_opt_get(opts, "value");
qdev_prop_register_global(g);
return 0;
}
/*
* Return whether configuration group @group is stored in QemuOpts, or
* recorded as one or more QDicts by qemu_record_config_group.
*/
static bool is_qemuopts_group(const char *group)
{
if (g_str_equal(group, "object") ||
g_str_equal(group, "audiodev") ||
g_str_equal(group, "machine") ||
g_str_equal(group, "smp-opts") ||
g_str_equal(group, "boot-opts")) {
return false;
}
return true;
}
static void qemu_record_config_group(const char *group, QDict *dict,
bool from_json, Error **errp)
{
if (g_str_equal(group, "object")) {
Visitor *v = qobject_input_visitor_new_keyval(QOBJECT(dict));
object_option_add_visitor(v);
visit_free(v);
} else if (g_str_equal(group, "audiodev")) {
Audiodev *dev = NULL;
Visitor *v = qobject_input_visitor_new_keyval(QOBJECT(dict));
if (visit_type_Audiodev(v, NULL, &dev, errp)) {
audio_define(dev);
}
visit_free(v);
} else if (g_str_equal(group, "machine")) {
/*
* Cannot merge string-valued and type-safe dictionaries, so JSON
* is not accepted yet for -M.
*/
assert(!from_json);
keyval_merge(machine_opts_dict, dict, errp);
} else if (g_str_equal(group, "smp-opts")) {
machine_merge_property("smp", dict, &error_fatal);
} else if (g_str_equal(group, "boot-opts")) {
machine_merge_property("boot", dict, &error_fatal);
} else {
abort();
}
}
/*
* Parse non-QemuOpts config file groups, pass the rest to
* qemu_config_do_parse.
*/
static void qemu_parse_config_group(const char *group, QDict *qdict,
void *opaque, Error **errp)
{
QObject *crumpled;
if (is_qemuopts_group(group)) {
qemu_config_do_parse(group, qdict, opaque, errp);
return;
}
crumpled = qdict_crumple(qdict, errp);
if (!crumpled) {
return;
}
switch (qobject_type(crumpled)) {
case QTYPE_QDICT:
qemu_record_config_group(group, qobject_to(QDict, crumpled), false, errp);
break;
case QTYPE_QLIST:
error_setg(errp, "Lists cannot be at top level of a configuration section");
break;
default:
g_assert_not_reached();
}
qobject_unref(crumpled);
}
static void qemu_read_default_config_file(Error **errp)
{
ERRP_GUARD();
int ret;
g_autofree char *file = get_relocated_path(CONFIG_QEMU_CONFDIR "/qemu.conf");
ret = qemu_read_config_file(file, qemu_parse_config_group, errp);
if (ret < 0) {
if (ret == -ENOENT) {
error_free(*errp);
*errp = NULL;
}
}
}
static void qemu_set_option(const char *str, Error **errp)
{
char group[64], id[64], arg[64];
QemuOptsList *list;
QemuOpts *opts;
int rc, offset;
rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
if (rc < 3 || str[offset] != '=') {
error_setg(errp, "can't parse: \"%s\"", str);
return;
}
if (!is_qemuopts_group(group)) {
error_setg(errp, "-set is not supported with %s", group);
} else {
list = qemu_find_opts_err(group, errp);
if (list) {
opts = qemu_opts_find(list, id);
if (!opts) {
error_setg(errp, "there is no %s \"%s\" defined", group, id);
return;
}
qemu_opt_set(opts, arg, str + offset + 1, errp);
}
}
}
static void user_register_global_props(void)
{
qemu_opts_foreach(qemu_find_opts("global"),
global_init_func, NULL, NULL);
}
static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
{
return !icount_configure(opts, errp);
}
static int accelerator_set_property(void *opaque,
const char *name, const char *value,
Error **errp)
{
return object_parse_property_opt(opaque, name, value, "accel", errp);
}
static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
{
bool *p_init_failed = opaque;
const char *acc = qemu_opt_get(opts, "accel");
AccelClass *ac = accel_find(acc);
AccelState *accel;
int ret;
bool qtest_with_kvm;
if (!acc) {
error_setg(errp, QERR_MISSING_PARAMETER, "accel");
goto bad;
}
qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
if (!ac) {
if (!qtest_with_kvm) {
error_report("invalid accelerator %s", acc);
}
goto bad;
}
accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
object_apply_compat_props(OBJECT(accel));
qemu_opt_foreach(opts, accelerator_set_property,
accel,
&error_fatal);
ret = accel_init_machine(accel, current_machine);
if (ret < 0) {
if (!qtest_with_kvm || ret != -ENOENT) {
error_report("failed to initialize %s: %s", acc, strerror(-ret));
}
goto bad;
}
return 1;
bad:
*p_init_failed = true;
return 0;
}
static void configure_accelerators(const char *progname)
{
bool init_failed = false;
qemu_opts_foreach(qemu_find_opts("icount"),
do_configure_icount, NULL, &error_fatal);
if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
char **accel_list, **tmp;
if (accelerators == NULL) {
/* Select the default accelerator */
bool have_tcg = accel_find("tcg");
bool have_kvm = accel_find("kvm");
if (have_tcg && have_kvm) {
if (g_str_has_suffix(progname, "kvm")) {
/* If the program name ends with "kvm", we prefer KVM */
accelerators = "kvm:tcg";
} else {
accelerators = "tcg:kvm";
}
} else if (have_kvm) {
accelerators = "kvm";
} else if (have_tcg) {
accelerators = "tcg";
} else {
error_report("No accelerator selected and"
" no default accelerator available");
exit(1);
}
}
accel_list = g_strsplit(accelerators, ":", 0);
for (tmp = accel_list; *tmp; tmp++) {
/*
* Filter invalid accelerators here, to prevent obscenities
* such as "-machine accel=tcg,,thread=single".
*/
if (accel_find(*tmp)) {
qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
} else {
init_failed = true;
error_report("invalid accelerator %s", *tmp);
}
}
g_strfreev(accel_list);
} else {
if (accelerators != NULL) {
error_report("The -accel and \"-machine accel=\" options are incompatible");
exit(1);
}
}
if (!qemu_opts_foreach(qemu_find_opts("accel"),
do_configure_accelerator, &init_failed, &error_fatal)) {
if (!init_failed) {
error_report("no accelerator found");
}
exit(1);
}
if (init_failed && !qtest_chrdev) {
error_report("falling back to %s", current_accel_name());
}
if (icount_enabled() && !tcg_enabled()) {
error_report("-icount is not allowed with hardware virtualization");
exit(1);
}
}
static void qemu_validate_options(const QDict *machine_opts)
{
const char *kernel_filename = qdict_get_try_str(machine_opts, "kernel");
const char *initrd_filename = qdict_get_try_str(machine_opts, "initrd");
const char *kernel_cmdline = qdict_get_try_str(machine_opts, "append");
if (kernel_filename == NULL) {
if (kernel_cmdline != NULL) {
error_report("-append only allowed with -kernel option");
exit(1);
}
if (initrd_filename != NULL) {
error_report("-initrd only allowed with -kernel option");
exit(1);
}
}
if (loadvm && incoming) {
error_report("'incoming' and 'loadvm' options are mutually exclusive");
exit(EXIT_FAILURE);
}
if (loadvm && preconfig_requested) {
error_report("'preconfig' and 'loadvm' options are "
"mutually exclusive");
exit(EXIT_FAILURE);
}
if (incoming && preconfig_requested && strcmp(incoming, "defer") != 0) {
error_report("'preconfig' supports '-incoming defer' only");
exit(EXIT_FAILURE);
}
#ifdef CONFIG_CURSES
if (is_daemonized() && dpy.type == DISPLAY_TYPE_CURSES) {
error_report("curses display cannot be used with -daemonize");
exit(1);
}
#endif
}
static void qemu_process_sugar_options(void)
{
if (mem_prealloc) {
QObject *smp = qdict_get(machine_opts_dict, "smp");
if (smp && qobject_type(smp) == QTYPE_QDICT) {
QObject *cpus = qdict_get(qobject_to(QDict, smp), "cpus");
if (cpus && qobject_type(cpus) == QTYPE_QSTRING) {
const char *val = qstring_get_str(qobject_to(QString, cpus));
object_register_sugar_prop("memory-backend", "prealloc-threads",
val, false);
}
}
object_register_sugar_prop("memory-backend", "prealloc", "on", false);
}
}
/* -action processing */
/*
* Process all the -action parameters parsed from cmdline.
*/
static int process_runstate_actions(void *opaque, QemuOpts *opts, Error **errp)
{
Error *local_err = NULL;
QDict *qdict = qemu_opts_to_qdict(opts, NULL);
QObject *ret = NULL;
qmp_marshal_set_action(qdict, &ret, &local_err);
qobject_unref(ret);
qobject_unref(qdict);
if (local_err) {
error_propagate(errp, local_err);
return 1;
}
return 0;
}
static void qemu_process_early_options(void)
{
vl: Allow ThreadContext objects to be created before the sandbox option Currently, there is no way to configure a CPU affinity inside QEMU when the sandbox option disables it for QEMU as a whole, for example, via: -sandbox enable=on,resourcecontrol=deny While ThreadContext objects can be created on the QEMU commandline and the CPU affinity can be configured externally via the thread-id, this is insufficient if a ThreadContext with a certain CPU affinity is already required during QEMU startup, before we can intercept QEMU and configure the CPU affinity. Blocking sched_setaffinity() was introduced in 24f8cdc57224 ("seccomp: add resourcecontrol argument to command line"), "to avoid any bigger of the process". However, we only care about once QEMU is running, not when the instance starting QEMU explicitly requests a certain CPU affinity on the QEMU comandline. Right now, for NUMA-aware preallocation of memory backends used for initial machine RAM, one has to: 1) Start QEMU with the memory-backend with "prealloc=off" 2) Pause QEMU before it starts the guest (-S) 3) Create ThreadContext, configure the CPU affinity using the thread-id 4) Configure the ThreadContext as "prealloc-context" of the memory backend 5) Trigger preallocation by setting "prealloc=on" To simplify this handling especially for initial machine RAM, allow creation of ThreadContext objects before parsing sandbox options, such that the CPU affinity requested on the QEMU commandline alongside the sandbox option can be set. As ThreadContext objects essentially only create a persistent context thread and set the CPU affinity, this is easily possible. With this change, we can create a ThreadContext with a CPU affinity on the QEMU commandline and use it for preallocation of memory backends glued to the machine (simplified example): To make "-name debug-threads=on" keep working as expected for the context threads, perform earlier parsing of "-name". qemu-system-x86_64 -m 1G \ -object thread-context,id=tc1,cpu-affinity=3-4 \ -object memory-backend-ram,id=pc.ram,size=1G,prealloc=on,prealloc-threads=2,prealloc-context=tc1 \ -machine memory-backend=pc.ram \ -S -monitor stdio -sandbox enable=on,resourcecontrol=deny And while we can query the current CPU affinity: (qemu) qom-get tc1 cpu-affinity [ 3, 4 ] We can no longer change it from QEMU directly: (qemu) qom-set tc1 cpu-affinity 1-2 Error: Setting CPU affinity failed: Operation not permitted Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Message-Id: <20221014134720.168738-8-david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2022-10-14 16:47:20 +03:00
qemu_opts_foreach(qemu_find_opts("name"),
parse_name, NULL, &error_fatal);
object_option_foreach_add(object_create_pre_sandbox);
#ifdef CONFIG_SECCOMP
QemuOptsList *olist = qemu_find_opts_err("sandbox", NULL);
if (olist) {
qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
}
#endif
if (qemu_opts_foreach(qemu_find_opts("action"),
process_runstate_actions, NULL, &error_fatal)) {
exit(1);
}
#ifndef _WIN32
qemu_opts_foreach(qemu_find_opts("add-fd"),
parse_add_fd, NULL, &error_fatal);
qemu_opts_foreach(qemu_find_opts("add-fd"),
cleanup_add_fd, NULL, &error_fatal);
#endif
/* Open the logfile at this point and set the log mask if necessary. */
{
int mask = 0;
if (log_mask) {
mask = qemu_str_to_log_mask(log_mask);
if (!mask) {
qemu_print_log_usage(stdout);
exit(1);
}
}
qemu_set_log_filename_flags(log_file, mask, &error_fatal);
}
qemu_add_default_firmwarepath();
}
static void qemu_process_help_options(void)
{
/*
* Check for -cpu help and -device help before we call select_machine(),
* which will return an error if the architecture has no default machine
* type and the user did not specify one, so that the user doesn't need
* to say '-cpu help -machine something'.
*/
if (cpu_option && is_help_option(cpu_option)) {
list_cpus();
exit(0);
}
if (qemu_opts_foreach(qemu_find_opts("device"),
device_help_func, NULL, NULL)) {
exit(0);
}
/* -L help lists the data directories and exits. */
if (list_data_dirs) {
qemu_list_data_dirs();
exit(0);
}
}
static void qemu_maybe_daemonize(const char *pid_file)
{
Error *err = NULL;
os_daemonize();
rcu_disable_atfork();
if (pid_file) {
char *pid_file_realpath = NULL;
if (!qemu_write_pidfile(pid_file, &err)) {
error_reportf_err(err, "cannot create PID file: ");
exit(1);
}
pid_file_realpath = g_malloc0(PATH_MAX);
if (!realpath(pid_file, pid_file_realpath)) {
if (errno != ENOENT) {
warn_report("not removing PID file on exit: cannot resolve PID "
"file path: %s: %s", pid_file, strerror(errno));
}
return;
}
qemu_unlink_pidfile_notifier = (struct UnlinkPidfileNotifier) {
.notifier = {
.notify = qemu_unlink_pidfile,
},
.pid_file_realpath = pid_file_realpath,
};
qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier.notifier);
}
}
static void qemu_init_displays(void)
{
DisplayState *ds;
/* init local displays */
ds = init_displaystate();
qemu_display_init(ds, &dpy);
/* must be after terminal init, SDL library changes signal handlers */
os_setup_signal_handling();
/* init remote displays */
#ifdef CONFIG_VNC
qemu_opts_foreach(qemu_find_opts("vnc"),
vnc_init_func, NULL, &error_fatal);
#endif
if (using_spice) {
qemu_spice.display_init();
}
}
static void qemu_init_board(void)
{
/* process plugin before CPUs are created, but once -smp has been parsed */
qemu_plugin_load_list(&plugin_list, &error_fatal);
/* From here on we enter MACHINE_PHASE_INITIALIZED. */
machine_run_board_init(current_machine, mem_path, &error_fatal);
drive_check_orphaned();
realtime_init();
}
static void qemu_create_cli_devices(void)
{
DeviceOption *opt;
soundhw_init();
qemu_opts_foreach(qemu_find_opts("fw_cfg"),
parse_fw_cfg, fw_cfg_find(), &error_fatal);
/* init USB devices */
if (machine_usb(current_machine)) {
if (foreach_device_config(DEV_USB, usb_parse) < 0)
exit(1);
}
/* init generic devices */
rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
qemu_opts_foreach(qemu_find_opts("device"),
device_init_func, NULL, &error_fatal);
QTAILQ_FOREACH(opt, &device_opts, next) {
DeviceState *dev;
loc_push_restore(&opt->loc);
/*
* TODO Eventually we should call qmp_device_add() here to make sure it
* behaves the same, but QMP still has to accept incorrectly typed
* options until libvirt is fixed and we want to be strict on the CLI
* from the start, so call qdev_device_add_from_qdict() directly for
* now.
*/
dev = qdev_device_add_from_qdict(opt->opts, true, &error_fatal);
object_unref(OBJECT(dev));
loc_pop(&opt->loc);
}
rom_reset_order_override();
}
static bool qemu_machine_creation_done(Error **errp)
{
MachineState *machine = MACHINE(qdev_get_machine());
/* Did we create any drives that we failed to create a device for? */
drive_check_orphaned();
/* Don't warn about the default network setup that you get if
* no command line -net or -netdev options are specified. There
* are two cases that we would otherwise complain about:
* (1) board doesn't support a NIC but the implicit "-net nic"
* requested one
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
* sets up a nic that isn't connected to anything.
*/
if (!default_net && (!qtest_enabled() || has_defaults)) {
net_check_clients();
}
qdev_prop_check_globals();
qdev_machine_creation_done();
if (machine->cgs && !machine->cgs->ready) {
error_setg(errp, "accelerator does not support confidential guest %s",
object_get_typename(OBJECT(machine->cgs)));
exit(1);
}
if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
error_setg(errp, "could not start gdbserver");
return false;
}
if (!vga_interface_created && !default_vga &&
vga_interface_type != VGA_NONE) {
warn_report("A -vga option was passed but this machine "
"type does not use that option; "
"No VGA device has been created");
}
return true;
}
void qmp_x_exit_preconfig(Error **errp)
{
if (phase_check(PHASE_MACHINE_INITIALIZED)) {
error_setg(errp, "The command is permitted only before machine initialization");
return;
}
qemu_init_board();
qemu_create_cli_devices();
if (!qemu_machine_creation_done(errp)) {
return;
}
if (loadvm) {
RunState state = autostart ? RUN_STATE_RUNNING : runstate_get();
load_snapshot(loadvm, NULL, false, NULL, &error_fatal);
load_snapshot_resume(state);
}
if (replay_mode != REPLAY_MODE_NONE) {
replay_vmstate_init();
}
if (incoming) {
Error *local_err = NULL;
if (strcmp(incoming, "defer") != 0) {
qmp_migrate_incoming(incoming, false, NULL, &local_err);
if (local_err) {
error_reportf_err(local_err, "-incoming %s: ", incoming);
exit(1);
}
}
} else if (autostart) {
qmp_cont(NULL);
}
}
void qemu_init(int argc, char **argv)
{
QemuOpts *opts;
QemuOpts *icount_opts = NULL, *accel_opts = NULL;
QemuOptsList *olist;
int optind;
const char *optarg;
MachineClass *machine_class;
bool userconfig = true;
FILE *vmstate_dump_file = NULL;
qemu_add_opts(&qemu_drive_opts);
qemu_add_drive_opts(&qemu_legacy_drive_opts);
qemu_add_drive_opts(&qemu_common_drive_opts);
qemu_add_drive_opts(&qemu_drive_opts);
qemu_add_drive_opts(&bdrv_runtime_opts);
qemu_add_opts(&qemu_chardev_opts);
qemu_add_opts(&qemu_device_opts);
qemu_add_opts(&qemu_netdev_opts);
qemu_add_opts(&qemu_nic_opts);
qemu_add_opts(&qemu_net_opts);
qemu_add_opts(&qemu_rtc_opts);
qemu_add_opts(&qemu_global_opts);
qemu_add_opts(&qemu_mon_opts);
qemu_add_opts(&qemu_trace_opts);
qemu_plugin_add_opts();
qemu_add_opts(&qemu_option_rom_opts);
qemu_add_opts(&qemu_accel_opts);
qemu_add_opts(&qemu_mem_opts);
qemu_add_opts(&qemu_smp_opts);
qemu_add_opts(&qemu_boot_opts);
qemu_add_opts(&qemu_add_fd_opts);
qemu_add_opts(&qemu_object_opts);
qemu_add_opts(&qemu_tpmdev_opts);
qemu_add_opts(&qemu_overcommit_opts);
qemu_add_opts(&qemu_msg_opts);
qemu_add_opts(&qemu_name_opts);
qemu_add_opts(&qemu_numa_opts);
qemu_add_opts(&qemu_icount_opts);
qemu_add_opts(&qemu_semihosting_config_opts);
qemu_add_opts(&qemu_fw_cfg_opts);
qemu_add_opts(&qemu_action_opts);
qemu_add_run_with_opts();
module_call_init(MODULE_INIT_OPTS);
error_init(argv[0]);
qemu_init_exec_dir(argv[0]);
os_setup_limits();
qemu_init_arch_modules();
qemu_init_subsystems();
/* first pass of option parsing */
optind = 1;
while (optind < argc) {
if (argv[optind][0] != '-') {
/* disk image */
optind++;
} else {
const QEMUOption *popt;
popt = lookup_opt(argc, argv, &optarg, &optind);
switch (popt->index) {
case QEMU_OPTION_nouserconfig:
userconfig = false;
break;
}
}
}
machine_opts_dict = qdict_new();
if (userconfig) {
qemu_read_default_config_file(&error_fatal);
}
/* second pass of option parsing */
optind = 1;
for(;;) {
if (optind >= argc)
break;
if (argv[optind][0] != '-') {
loc_set_cmdline(argv, optind, 1);
drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
} else {
const QEMUOption *popt;
popt = lookup_opt(argc, argv, &optarg, &optind);
if (!(popt->arch_mask & arch_type)) {
error_report("Option not supported for this target");
exit(1);
}
switch(popt->index) {
case QEMU_OPTION_cpu:
/* hw initialization will check this */
cpu_option = optarg;
break;
case QEMU_OPTION_hda:
case QEMU_OPTION_hdb:
case QEMU_OPTION_hdc:
case QEMU_OPTION_hdd:
drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
HD_OPTS);
break;
case QEMU_OPTION_blockdev:
{
Visitor *v;
BlockdevOptionsQueueEntry *bdo;
v = qobject_input_visitor_new_str(optarg, "driver",
&error_fatal);
bdo = g_new(BlockdevOptionsQueueEntry, 1);
visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
&error_fatal);
visit_free(v);
loc_save(&bdo->loc);
QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
break;
}
case QEMU_OPTION_drive:
opts = qemu_opts_parse_noisily(qemu_find_opts("drive"),
optarg, false);
if (opts == NULL) {
exit(1);
}
break;
case QEMU_OPTION_set:
qemu_set_option(optarg, &error_fatal);
break;
case QEMU_OPTION_global:
if (qemu_global_option(optarg) != 0)
exit(1);
break;
case QEMU_OPTION_mtdblock:
drive_add(IF_MTD, -1, optarg, MTD_OPTS);
break;
case QEMU_OPTION_sd:
drive_add(IF_SD, -1, optarg, SD_OPTS);
break;
case QEMU_OPTION_pflash:
drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
break;
case QEMU_OPTION_snapshot:
snapshot = 1;
replay_add_blocker("-snapshot");
break;
case QEMU_OPTION_numa:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_display:
parse_display(optarg);
break;
case QEMU_OPTION_nographic:
qdict_put_str(machine_opts_dict, "graphics", "off");
nographic = true;
dpy.type = DISPLAY_TYPE_NONE;
break;
case QEMU_OPTION_portrait:
graphic_rotate = 90;
break;
case QEMU_OPTION_rotate:
graphic_rotate = strtol(optarg, (char **) &optarg, 10);
if (graphic_rotate != 0 && graphic_rotate != 90 &&
graphic_rotate != 180 && graphic_rotate != 270) {
error_report("only 90, 180, 270 deg rotation is available");
exit(1);
}
break;
case QEMU_OPTION_kernel:
qdict_put_str(machine_opts_dict, "kernel", optarg);
break;
case QEMU_OPTION_initrd:
qdict_put_str(machine_opts_dict, "initrd", optarg);
break;
case QEMU_OPTION_append:
qdict_put_str(machine_opts_dict, "append", optarg);
break;
case QEMU_OPTION_dtb:
qdict_put_str(machine_opts_dict, "dtb", optarg);
break;
case QEMU_OPTION_cdrom:
drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
break;
case QEMU_OPTION_boot:
machine_parse_property_opt(qemu_find_opts("boot-opts"), "boot", optarg);
break;
case QEMU_OPTION_fda:
case QEMU_OPTION_fdb:
drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
optarg, FD_OPTS);
break;
case QEMU_OPTION_no_fd_bootchk:
qdict_put_str(machine_opts_dict, "fd-bootchk", "off");
break;
case QEMU_OPTION_netdev:
default_net = 0;
qapi: net: introduce a way to bypass qemu_opts_parse_noisily() As qemu_opts_parse_noisily() flattens the QAPI structures ("type" field of Netdev structure can collides with "type" field of SocketAddress), we introduce a way to bypass qemu_opts_parse_noisily() and use directly visit_type_Netdev() to parse the backend parameters. More details from Markus: qemu_init() passes the argument of -netdev, -nic, and -net to net_client_parse(). net_client_parse() parses with qemu_opts_parse_noisily(), passing QemuOptsList qemu_netdev_opts for -netdev, qemu_nic_opts for -nic, and qemu_net_opts for -net. Their desc[] are all empty, which means any keys are accepted. The result of the parse (a QemuOpts) is stored in the QemuOptsList. Note that QemuOpts is flat by design. In some places, we layer non-flat on top using dotted keys convention, but not here. net_init_clients() iterates over the stored QemuOpts, and passes them to net_init_netdev(), net_param_nic(), or net_init_client(), respectively. These functions pass the QemuOpts to net_client_init(). They also do other things with the QemuOpts, which we can ignore here. net_client_init() uses the opts visitor to convert the (flat) QemOpts to a (non-flat) QAPI object Netdev. Netdev is also the argument of QMP command netdev_add. The opts visitor was an early attempt to support QAPI in (QemuOpts-based) CLI. It restricts QAPI types to a certain shape; see commit eb7ee2cbeb "qapi: introduce OptsVisitor". A more modern way to support QAPI is qobject_input_visitor_new_str(). It uses keyval_parse() instead of QemuOpts for KEY=VALUE,... syntax, and it also supports JSON syntax. The former isn't quite as expressive as JSON, but it's a lot closer than QemuOpts + opts visitor. This commit paves the way to use of the modern way instead. Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-10-21 12:09:09 +03:00
if (netdev_is_modern(optarg)) {
netdev_parse_modern(optarg);
} else {
net_client_parse(qemu_find_opts("netdev"), optarg);
}
break;
case QEMU_OPTION_nic:
default_net = 0;
net_client_parse(qemu_find_opts("nic"), optarg);
break;
case QEMU_OPTION_net:
default_net = 0;
net_client_parse(qemu_find_opts("net"), optarg);
break;
#ifdef CONFIG_LIBISCSI
case QEMU_OPTION_iscsi:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
optarg, false);
if (!opts) {
exit(1);
}
break;
#endif
case QEMU_OPTION_audiodev:
default_audio = 0;
audio_parse_option(optarg);
break;
case QEMU_OPTION_audio: {
bool help;
char *model = NULL;
Audiodev *dev = NULL;
Visitor *v;
QDict *dict = keyval_parse(optarg, "driver", &help, &error_fatal);
default_audio = 0;
if (help || (qdict_haskey(dict, "driver") &&
is_help_option(qdict_get_str(dict, "driver")))) {
audio_help();
exit(EXIT_SUCCESS);
}
if (!qdict_haskey(dict, "id")) {
qdict_put_str(dict, "id", "audiodev0");
}
if (qdict_haskey(dict, "model")) {
model = g_strdup(qdict_get_str(dict, "model"));
qdict_del(dict, "model");
if (is_help_option(model)) {
show_valid_soundhw();
exit(0);
}
}
v = qobject_input_visitor_new_keyval(QOBJECT(dict));
qobject_unref(dict);
visit_type_Audiodev(v, NULL, &dev, &error_fatal);
visit_free(v);
if (model) {
audio_define(dev);
select_soundhw(model, dev->id);
g_free(model);
} else {
audio_define_default(dev, &error_fatal);
}
break;
}
case QEMU_OPTION_h:
help(0);
break;
case QEMU_OPTION_version:
version();
exit(0);
break;
case QEMU_OPTION_m:
opts = qemu_opts_parse_noisily(qemu_find_opts("memory"), optarg, true);
if (opts == NULL) {
exit(1);
}
break;
#ifdef CONFIG_TPM
case QEMU_OPTION_tpmdev:
if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
exit(1);
}
break;
#endif
case QEMU_OPTION_mempath:
mem_path = optarg;
break;
case QEMU_OPTION_mem_prealloc:
mem_prealloc = 1;
break;
case QEMU_OPTION_d:
log_mask = optarg;
break;
case QEMU_OPTION_D:
log_file = optarg;
break;
case QEMU_OPTION_DFILTER:
qemu_set_dfilter_ranges(optarg, &error_fatal);
break;
#if defined(CONFIG_TCG) && defined(CONFIG_LINUX)
case QEMU_OPTION_perfmap:
perf_enable_perfmap();
break;
case QEMU_OPTION_jitdump:
perf_enable_jitdump();
break;
#endif
case QEMU_OPTION_seed:
qemu_guest_random_seed_main(optarg, &error_fatal);
break;
case QEMU_OPTION_s:
add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
break;
case QEMU_OPTION_gdb:
add_device_config(DEV_GDB, optarg);
break;
case QEMU_OPTION_L:
if (is_help_option(optarg)) {
list_data_dirs = true;
} else {
qemu_add_data_dir(g_strdup(optarg));
}
break;
case QEMU_OPTION_bios:
qdict_put_str(machine_opts_dict, "firmware", optarg);
break;
case QEMU_OPTION_S:
autostart = 0;
break;
case QEMU_OPTION_k:
keyboard_layout = optarg;
break;
case QEMU_OPTION_vga:
vga_model = optarg;
default_vga = 0;
break;
case QEMU_OPTION_g:
{
const char *p;
int w, h, depth;
p = optarg;
w = strtol(p, (char **)&p, 10);
if (w <= 0) {
graphic_error:
error_report("invalid resolution or depth");
exit(1);
}
if (*p != 'x')
goto graphic_error;
p++;
h = strtol(p, (char **)&p, 10);
if (h <= 0)
goto graphic_error;
if (*p == 'x') {
p++;
depth = strtol(p, (char **)&p, 10);
if (depth != 1 && depth != 2 && depth != 4 &&
depth != 8 && depth != 15 && depth != 16 &&
depth != 24 && depth != 32)
goto graphic_error;
} else if (*p == '\0') {
depth = graphic_depth;
} else {
goto graphic_error;
}
graphic_width = w;
graphic_height = h;
graphic_depth = depth;
}
break;
case QEMU_OPTION_echr:
{
char *r;
term_escape_char = strtol(optarg, &r, 0);
if (r == optarg)
printf("Bad argument to echr\n");
break;
}
case QEMU_OPTION_monitor:
default_monitor = 0;
if (strncmp(optarg, "none", 4)) {
monitor_parse(optarg, "readline", false);
}
break;
case QEMU_OPTION_qmp:
monitor_parse(optarg, "control", false);
default_monitor = 0;
break;
case QEMU_OPTION_qmp_pretty:
monitor_parse(optarg, "control", true);
default_monitor = 0;
break;
case QEMU_OPTION_mon:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
true);
if (!opts) {
exit(1);
}
default_monitor = 0;
break;
case QEMU_OPTION_chardev:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_fsdev:
olist = qemu_find_opts("fsdev");
if (!olist) {
error_report("fsdev support is disabled");
exit(1);
}
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(olist, optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_virtfs: {
QemuOpts *fsdev;
QemuOpts *device;
9p: Added virtfs option 'multidevs=remap|forbid|warn' 'warn' (default): Only log an error message (once) on host if more than one device is shared by same export, except of that just ignore this config error though. This is the default behaviour for not breaking existing installations implying that they really know what they are doing. 'forbid': Like 'warn', but except of just logging an error this also denies access of guest to additional devices. 'remap': Allows to share more than one device per export by remapping inodes from host to guest appropriately. To support multiple devices on the 9p share, and avoid qid path collisions we take the device id as input to generate a unique QID path. The lowest 48 bits of the path will be set equal to the file inode, and the top bits will be uniquely assigned based on the top 16 bits of the inode and the device id. Signed-off-by: Antonios Motakis <antonios.motakis@huawei.com> [CS: - Rebased to https://github.com/gkurz/qemu/commits/9p-next (SHA1 7fc4c49e91). - Added virtfs option 'multidevs', original patch simply did the inode remapping without being asked. - Updated hash calls to new xxhash API. - Updated docs for new option 'multidevs'. - Fixed v9fs_do_readdir() not having remapped inodes. - Log error message when running out of prefixes in qid_path_prefixmap(). - Fixed definition of QPATH_INO_MASK. - Wrapped qpp_table initialization to dedicated qpp_table_init() function. - Dropped unnecessary parantheses in qpp_lookup_func(). - Dropped unnecessary g_malloc0() result checks. ] Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com> [groug: - Moved "multidevs" parsing to the local backend. - Added hint to invalid multidevs option error. - Turn "remap" into "x-remap". ] Signed-off-by: Greg Kurz <groug@kaod.org>
2019-10-10 12:36:05 +03:00
const char *writeout, *sock_fd, *socket, *path, *security_model,
*multidevs;
olist = qemu_find_opts("virtfs");
if (!olist) {
error_report("virtfs support is disabled");
exit(1);
}
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(olist, optarg, true);
if (!opts) {
exit(1);
}
if (qemu_opt_get(opts, "fsdriver") == NULL ||
qemu_opt_get(opts, "mount_tag") == NULL) {
error_report("Usage: -virtfs fsdriver,mount_tag=tag");
exit(1);
}
fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
qemu_opts_id(opts) ?:
qemu_opt_get(opts, "mount_tag"),
1, NULL);
if (!fsdev) {
error_report("duplicate or invalid fsdev id: %s",
qemu_opt_get(opts, "mount_tag"));
exit(1);
}
writeout = qemu_opt_get(opts, "writeout");
if (writeout) {
#ifdef CONFIG_SYNC_FILE_RANGE
qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
#else
error_report("writeout=immediate not supported "
"on this platform");
exit(1);
#endif
}
qemu_opt_set(fsdev, "fsdriver",
qemu_opt_get(opts, "fsdriver"), &error_abort);
path = qemu_opt_get(opts, "path");
if (path) {
qemu_opt_set(fsdev, "path", path, &error_abort);
}
security_model = qemu_opt_get(opts, "security_model");
if (security_model) {
qemu_opt_set(fsdev, "security_model", security_model,
&error_abort);
}
socket = qemu_opt_get(opts, "socket");
if (socket) {
qemu_opt_set(fsdev, "socket", socket, &error_abort);
}
sock_fd = qemu_opt_get(opts, "sock_fd");
if (sock_fd) {
qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
}
qemu_opt_set_bool(fsdev, "readonly",
qemu_opt_get_bool(opts, "readonly", 0),
&error_abort);
9p: Added virtfs option 'multidevs=remap|forbid|warn' 'warn' (default): Only log an error message (once) on host if more than one device is shared by same export, except of that just ignore this config error though. This is the default behaviour for not breaking existing installations implying that they really know what they are doing. 'forbid': Like 'warn', but except of just logging an error this also denies access of guest to additional devices. 'remap': Allows to share more than one device per export by remapping inodes from host to guest appropriately. To support multiple devices on the 9p share, and avoid qid path collisions we take the device id as input to generate a unique QID path. The lowest 48 bits of the path will be set equal to the file inode, and the top bits will be uniquely assigned based on the top 16 bits of the inode and the device id. Signed-off-by: Antonios Motakis <antonios.motakis@huawei.com> [CS: - Rebased to https://github.com/gkurz/qemu/commits/9p-next (SHA1 7fc4c49e91). - Added virtfs option 'multidevs', original patch simply did the inode remapping without being asked. - Updated hash calls to new xxhash API. - Updated docs for new option 'multidevs'. - Fixed v9fs_do_readdir() not having remapped inodes. - Log error message when running out of prefixes in qid_path_prefixmap(). - Fixed definition of QPATH_INO_MASK. - Wrapped qpp_table initialization to dedicated qpp_table_init() function. - Dropped unnecessary parantheses in qpp_lookup_func(). - Dropped unnecessary g_malloc0() result checks. ] Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com> [groug: - Moved "multidevs" parsing to the local backend. - Added hint to invalid multidevs option error. - Turn "remap" into "x-remap". ] Signed-off-by: Greg Kurz <groug@kaod.org>
2019-10-10 12:36:05 +03:00
multidevs = qemu_opt_get(opts, "multidevs");
if (multidevs) {
qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
}
device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
&error_abort);
qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
qemu_opt_set(device, "fsdev",
qemu_opts_id(fsdev), &error_abort);
qemu_opt_set(device, "mount_tag",
qemu_opt_get(opts, "mount_tag"), &error_abort);
break;
}
case QEMU_OPTION_serial:
add_device_config(DEV_SERIAL, optarg);
default_serial = 0;
if (strncmp(optarg, "mon:", 4) == 0) {
default_monitor = 0;
}
break;
case QEMU_OPTION_action:
olist = qemu_find_opts("action");
if (!qemu_opts_parse_noisily(olist, optarg, false)) {
exit(1);
}
break;
case QEMU_OPTION_watchdog_action: {
opts = qemu_opts_create(qemu_find_opts("action"), NULL, 0, &error_abort);
qemu_opt_set(opts, "watchdog", optarg, &error_abort);
break;
}
case QEMU_OPTION_parallel:
add_device_config(DEV_PARALLEL, optarg);
default_parallel = 0;
if (strncmp(optarg, "mon:", 4) == 0) {
default_monitor = 0;
}
break;
case QEMU_OPTION_debugcon:
add_device_config(DEV_DEBUGCON, optarg);
break;
case QEMU_OPTION_loadvm:
loadvm = optarg;
break;
case QEMU_OPTION_full_screen:
dpy.has_full_screen = true;
dpy.full_screen = true;
break;
case QEMU_OPTION_pidfile:
pid_file = optarg;
break;
case QEMU_OPTION_win2k_hack:
object_register_sugar_prop("ide-device", "win2k-install-hack", "true", true);
break;
case QEMU_OPTION_acpitable:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
optarg, true);
if (!opts) {
exit(1);
}
acpi_table_add(opts, &error_fatal);
break;
case QEMU_OPTION_smbios:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),
optarg, false);
if (!opts) {
exit(1);
}
smbios_entry_add(opts, &error_fatal);
break;
case QEMU_OPTION_fwcfg:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"),
optarg, true);
if (opts == NULL) {
exit(1);
}
break;
cli: add --preconfig option This option allows pausing QEMU in the new RUN_STATE_PRECONFIG state, allowing the configuration of QEMU from QMP before the machine jumps into board initialization code of machine_run_board_init() The intent is to allow management to query machine state and additionally configure it using previous query results within one QEMU instance (i.e. eliminate the need to start QEMU twice, 1st to query board specific parameters and 2nd for actual VM start using query results for additional parameters). The new option complements -S option and could be used with or without it. The difference is that -S pauses QEMU when the machine is completely initialized with all devices wired up and ready to execute guest code (QEMU needs only to unpause VCPUs to let guest execute its code), while the "preconfig" option pauses QEMU early before board specific init callback (machine_run_board_init) is executed and allows the configuration of machine parameters which will be used by board init code. When early introspection/configuration is done, command 'exit-preconfig' should be used to exit RUN_STATE_PRECONFIG and transition to the next requested state (i.e. if -S is used then QEMU will pause the second time when board/device initialization is completed or start guest execution if -S isn't provided on CLI) PS: Initially 'preconfig' is planned to be used for configuring numa topology depending on board specified possible cpus layout. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1526059483-42847-1-git-send-email-imammedo@redhat.com> [ehabkost: Changed "since 2.13" to "since 3.0"] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-05-11 20:24:43 +03:00
case QEMU_OPTION_preconfig:
preconfig_requested = true;
cli: add --preconfig option This option allows pausing QEMU in the new RUN_STATE_PRECONFIG state, allowing the configuration of QEMU from QMP before the machine jumps into board initialization code of machine_run_board_init() The intent is to allow management to query machine state and additionally configure it using previous query results within one QEMU instance (i.e. eliminate the need to start QEMU twice, 1st to query board specific parameters and 2nd for actual VM start using query results for additional parameters). The new option complements -S option and could be used with or without it. The difference is that -S pauses QEMU when the machine is completely initialized with all devices wired up and ready to execute guest code (QEMU needs only to unpause VCPUs to let guest execute its code), while the "preconfig" option pauses QEMU early before board specific init callback (machine_run_board_init) is executed and allows the configuration of machine parameters which will be used by board init code. When early introspection/configuration is done, command 'exit-preconfig' should be used to exit RUN_STATE_PRECONFIG and transition to the next requested state (i.e. if -S is used then QEMU will pause the second time when board/device initialization is completed or start guest execution if -S isn't provided on CLI) PS: Initially 'preconfig' is planned to be used for configuring numa topology depending on board specified possible cpus layout. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1526059483-42847-1-git-send-email-imammedo@redhat.com> [ehabkost: Changed "since 2.13" to "since 3.0"] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-05-11 20:24:43 +03:00
break;
case QEMU_OPTION_enable_kvm:
qdict_put_str(machine_opts_dict, "accel", "kvm");
break;
case QEMU_OPTION_M:
case QEMU_OPTION_machine:
{
bool help;
keyval_parse_into(machine_opts_dict, optarg, "type", &help, &error_fatal);
if (help) {
machine_help_func(machine_opts_dict);
exit(EXIT_SUCCESS);
}
break;
}
case QEMU_OPTION_accel:
accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"),
optarg, true);
optarg = qemu_opt_get(accel_opts, "accel");
if (!optarg || is_help_option(optarg)) {
printf("Accelerators supported in QEMU binary:\n");
GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL,
false);
for (el = accel_list; el; el = el->next) {
gchar *typename = g_strdup(object_class_get_name(
OBJECT_CLASS(el->data)));
/* omit qtest which is used for tests only */
if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) &&
g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) {
gchar **optname = g_strsplit(typename,
ACCEL_CLASS_SUFFIX, 0);
printf("%s\n", optname[0]);
vl: Don't mismatch g_strsplit()/g_free() It's a mismatch between g_strsplit and g_free, it will cause a memory leak as follow: [root@localhost]# ./aarch64-softmmu/qemu-system-aarch64 -accel help Accelerators supported in QEMU binary: tcg kvm ================================================================= ==1207900==ERROR: LeakSanitizer: detected memory leaks Direct leak of 8 byte(s) in 2 object(s) allocated from: #0 0xfffd700231cb in __interceptor_malloc (/lib64/libasan.so.4+0xd31cb) #1 0xfffd6ec57163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163) #2 0xfffd6ec724d7 in g_strndup (/lib64/libglib-2.0.so.0+0x724d7) #3 0xfffd6ec73d3f in g_strsplit (/lib64/libglib-2.0.so.0+0x73d3f) #4 0xaaab66be5077 in main /mnt/sdc/qemu-master/qemu-4.2.0-rc0/vl.c:3517 #5 0xfffd6e140b9f in __libc_start_main (/lib64/libc.so.6+0x20b9f) #6 0xaaab66bf0f53 (./build/aarch64-softmmu/qemu-system-aarch64+0x8a0f53) Direct leak of 2 byte(s) in 2 object(s) allocated from: #0 0xfffd700231cb in __interceptor_malloc (/lib64/libasan.so.4+0xd31cb) #1 0xfffd6ec57163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163) #2 0xfffd6ec7243b in g_strdup (/lib64/libglib-2.0.so.0+0x7243b) #3 0xfffd6ec73e6f in g_strsplit (/lib64/libglib-2.0.so.0+0x73e6f) #4 0xaaab66be5077 in main /mnt/sdc/qemu-master/qemu-4.2.0-rc0/vl.c:3517 #5 0xfffd6e140b9f in __libc_start_main (/lib64/libc.so.6+0x20b9f) #6 0xaaab66bf0f53 (./build/aarch64-softmmu/qemu-system-aarch64+0x8a0f53) Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com> Message-Id: <20200110091710.53424-2-pannengyuan@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-10 12:17:09 +03:00
g_strfreev(optname);
}
g_free(typename);
}
g_slist_free(accel_list);
exit(0);
}
break;
case QEMU_OPTION_usb:
qdict_put_str(machine_opts_dict, "usb", "on");
break;
case QEMU_OPTION_usbdevice:
qdict_put_str(machine_opts_dict, "usb", "on");
add_device_config(DEV_USB, optarg);
break;
case QEMU_OPTION_device:
if (optarg[0] == '{') {
QObject *obj = qobject_from_json(optarg, &error_fatal);
DeviceOption *opt = g_new0(DeviceOption, 1);
opt->opts = qobject_to(QDict, obj);
loc_save(&opt->loc);
assert(opt->opts != NULL);
QTAILQ_INSERT_TAIL(&device_opts, opt, next);
} else {
if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
optarg, true)) {
exit(1);
}
}
break;
case QEMU_OPTION_smp:
machine_parse_property_opt(qemu_find_opts("smp-opts"),
"smp", optarg);
break;
#ifdef CONFIG_VNC
case QEMU_OPTION_vnc:
vnc_parse(optarg);
display_remote++;
break;
#endif
case QEMU_OPTION_no_reboot:
olist = qemu_find_opts("action");
qemu_opts_parse_noisily(olist, "reboot=shutdown", false);
break;
case QEMU_OPTION_no_shutdown:
olist = qemu_find_opts("action");
qemu_opts_parse_noisily(olist, "shutdown=pause", false);
break;
case QEMU_OPTION_uuid:
if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) {
error_report("failed to parse UUID string: wrong format");
exit(1);
}
qemu_uuid_set = true;
break;
case QEMU_OPTION_option_rom:
if (nb_option_roms >= MAX_OPTION_ROMS) {
error_report("too many option ROMs");
exit(1);
}
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"),
optarg, true);
if (!opts) {
exit(1);
}
option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
option_rom[nb_option_roms].bootindex =
qemu_opt_get_number(opts, "bootindex", -1);
if (!option_rom[nb_option_roms].name) {
error_report("Option ROM file is not specified");
exit(1);
}
nb_option_roms++;
break;
case QEMU_OPTION_semihosting:
qemu_semihosting_enable();
break;
case QEMU_OPTION_semihosting_config:
if (qemu_semihosting_config_options(optarg) != 0) {
exit(1);
}
break;
case QEMU_OPTION_name:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("name"),
optarg, true);
if (!opts) {
exit(1);
}
/* Capture guest name if -msg guest-name is used later */
error_guest_name = qemu_opt_get(opts, "guest");
break;
case QEMU_OPTION_prom_env:
if (nb_prom_envs >= MAX_PROM_ENVS) {
error_report("too many prom variables");
exit(1);
}
prom_envs[nb_prom_envs] = optarg;
nb_prom_envs++;
break;
case QEMU_OPTION_old_param:
old_param = 1;
break;
case QEMU_OPTION_rtc:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg,
false);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_icount:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"),
optarg, true);
if (!icount_opts) {
exit(1);
}
break;
case QEMU_OPTION_incoming:
if (!incoming) {
runstate_set(RUN_STATE_INMIGRATE);
}
incoming = optarg;
break;
case QEMU_OPTION_only_migratable:
Revert "migration: move only_migratable to MigrationState" This reverts commit 3df663e575f1876d7f3bc684f80e72fca0703d39. This reverts commit b605c47b57b58e61a901a50a0762dccf43d94783. Command line option --only-migratable is for disallowing any configuration that can block migration. Initially, --only-migratable set global variable @only_migratable. Commit 3df663e575 "migration: move only_migratable to MigrationState" replaced it by MigrationState member @only_migratable. That was a mistake. First, it doesn't make sense on the design level. MigrationState captures the state of an individual migration, but --only-migratable isn't a property of an individual migration, it's a restriction on QEMU configuration. With fault tolerance, we could have several migrations at once. --only-migratable would certainly protect all of them. Storing it in MigrationState feels inappropriate. Second, it contributes to a dependency cycle that manifests itself as a bug now. Putting @only_migratable into MigrationState means its available only after migration_object_init(). We can't set it before migration_object_init(), so we delay setting it with a global property (this is fixup commit b605c47b57 "migration: fix handling for --only-migratable"). We can't get it before migration_object_init(), so anything that uses it can only run afterwards. Since migrate_add_blocker() needs to obey --only-migratable, any code adding migration blockers can run only afterwards. This contributes to the following dependency cycle: * configure_blockdev() must run before machine_set_property() so machine properties can refer to block backends * machine_set_property() before configure_accelerator() so machine properties like kvm-irqchip get applied * configure_accelerator() before migration_object_init() so that Xen's accelerator compat properties get applied. * migration_object_init() before configure_blockdev() so configure_blockdev() can add migration blockers The cycle was closed when recent commit cda4aa9a5a0 "Create block backends before setting machine properties" added the first dependency, and satisfied it by violating the last one. Broke block backends that add migration blockers. Moving @only_migratable into MigrationState was a mistake. Revert it. This doesn't quite break the "migration_object_init() before configure_blockdev() dependency, since migrate_add_blocker() still has another dependency on migration_object_init(). To be addressed the next commit. Note that the reverted commit made -only-migratable sugar for -global migration.only-migratable=on below the hood. Documentation has only ever mentioned -only-migratable. This commit removes the arcane & undocumented alternative to -only-migratable again. Nobody should be using it. Conflicts: include/migration/misc.h migration/migration.c migration/migration.h vl.c Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190401090827.20793-3-armbru@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
2019-04-01 12:08:24 +03:00
only_migratable = 1;
break;
case QEMU_OPTION_nodefaults:
has_defaults = 0;
break;
case QEMU_OPTION_xen_domid:
if (!(accel_find("xen")) && !(accel_find("kvm"))) {
error_report("Option not supported for this target");
exit(1);
}
xen_domid = atoi(optarg);
break;
case QEMU_OPTION_xen_attach:
if (!(accel_find("xen"))) {
error_report("Option not supported for this target");
exit(1);
}
xen_mode = XEN_ATTACH;
break;
case QEMU_OPTION_xen_domid_restrict:
if (!(accel_find("xen"))) {
error_report("Option not supported for this target");
exit(1);
}
xen_domid_restrict = true;
break;
case QEMU_OPTION_trace:
trace_opt_parse(optarg);
break;
case QEMU_OPTION_plugin:
qemu_plugin_opt_parse(optarg, &plugin_list);
break;
case QEMU_OPTION_readconfig:
qemu_read_config_file(optarg, qemu_parse_config_group, &error_fatal);
break;
#ifdef CONFIG_SPICE
case QEMU_OPTION_spice:
opts = qemu_opts_parse_noisily(qemu_find_opts("spice"), optarg, false);
if (!opts) {
exit(1);
}
display_remote++;
break;
#endif
case QEMU_OPTION_qtest:
qtest_chrdev = optarg;
break;
case QEMU_OPTION_qtest_log:
qtest_log = optarg;
break;
case QEMU_OPTION_sandbox:
olist = qemu_find_opts("sandbox");
if (!olist) {
#ifndef CONFIG_SECCOMP
error_report("-sandbox support is not enabled "
"in this QEMU binary");
#endif
exit(1);
}
opts = qemu_opts_parse_noisily(olist, optarg, true);
if (!opts) {
exit(1);
}
break;
case QEMU_OPTION_add_fd:
#ifndef _WIN32
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("add-fd"),
optarg, false);
if (!opts) {
exit(1);
}
#else
error_report("File descriptor passing is disabled on this "
"platform");
exit(1);
#endif
break;
case QEMU_OPTION_object:
object_option_parse(optarg);
break;
case QEMU_OPTION_overcommit:
opts = qemu_opts_parse_noisily(qemu_find_opts("overcommit"),
optarg, false);
if (!opts) {
exit(1);
}
enable_mlock = qemu_opt_get_bool(opts, "mem-lock", false);
enable_cpu_pm = qemu_opt_get_bool(opts, "cpu-pm", false);
break;
case QEMU_OPTION_compat:
{
CompatPolicy *opts_policy;
Visitor *v;
v = qobject_input_visitor_new_str(optarg, NULL,
&error_fatal);
visit_type_CompatPolicy(v, NULL, &opts_policy, &error_fatal);
QAPI_CLONE_MEMBERS(CompatPolicy, &compat_policy, opts_policy);
qapi_free_CompatPolicy(opts_policy);
visit_free(v);
break;
}
case QEMU_OPTION_msg:
QemuOpts: Wean off qerror_report_err() qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-02-13 14:50:26 +03:00
opts = qemu_opts_parse_noisily(qemu_find_opts("msg"), optarg,
false);
if (!opts) {
exit(1);
}
configure_msg(opts);
break;
case QEMU_OPTION_dump_vmstate:
if (vmstate_dump_file) {
error_report("only one '-dump-vmstate' "
"option may be given");
exit(1);
}
vmstate_dump_file = fopen(optarg, "w");
if (vmstate_dump_file == NULL) {
error_report("open %s: %s", optarg, strerror(errno));
exit(1);
}
break;
case QEMU_OPTION_enable_sync_profile:
qsp_enable();
break;
case QEMU_OPTION_nouserconfig:
/* Nothing to be parsed here. Especially, do not error out below. */
break;
#if defined(CONFIG_POSIX)
case QEMU_OPTION_runas:
if (!os_set_runas(optarg)) {
error_report("User \"%s\" doesn't exist"
" (and is not <uid>:<gid>)",
optarg);
exit(1);
}
break;
case QEMU_OPTION_daemonize:
os_set_daemonize(true);
break;
case QEMU_OPTION_run_with: {
const char *str;
opts = qemu_opts_parse_noisily(qemu_find_opts("run-with"),
optarg, false);
if (!opts) {
exit(1);
}
#if defined(CONFIG_LINUX)
if (qemu_opt_get_bool(opts, "async-teardown", false)) {
init_async_teardown();
}
#endif
str = qemu_opt_get(opts, "chroot");
if (str) {
os_set_chroot(str);
}
break;
}
#endif /* CONFIG_POSIX */
default:
error_report("Option not supported in this build");
exit(1);
}
}
}
/*
* Clear error location left behind by the loop.
* Best done right after the loop. Do not insert code here!
*/
loc_set_none();
qemu_validate_options(machine_opts_dict);
qemu_process_sugar_options();
/*
* These options affect everything else and should be processed
* before daemonizing.
*/
qemu_process_early_options();
qemu_process_help_options();
qemu_maybe_daemonize(pid_file);
vl.c: do not execute trace_init_backends() before daemonizing Commit v5.2.0-190-g0546c0609c ("vl: split various early command line options to a separate function") moved the trace backend init code to the qemu_process_early_options(). Which is now being called before os_daemonize() via qemu_maybe_daemonize(). Turns out that this change of order causes a problem when executing QEMU in daemon mode and with CONFIG_TRACE_SIMPLE. The trace thread is now being created by the parent, and the parent is left waiting for a trace file flush that was registered via st_init(). The result is that the parent process never exits. To reproduce, fire up a QEMU process with -daemonize and with CONFIG_TRACE_SIMPLE enabled. Two QEMU process will be left in the host: $ sudo ./x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults \ -nographic -machine none,accel=kvm:tcg -daemonize $ ps axf | grep qemu 529710 pts/3 S+ 0:00 | \_ grep --color=auto qemu 529697 ? Ssl 0:00 \_ ./x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults -nographic -machine none,accel=kvm:tcg -daemonize 529699 ? Sl 0:00 \_ ./x86_64-softmmu/qemu-system-x86_64 -S -no-user-config -nodefaults -nographic -machine none,accel=kvm:tcg -daemonize The parent thread is hang in flush_trace_file: $ sudo gdb ./x86_64-softmmu/qemu-system-x86_64 529697 (..) (gdb) bt #0 0x00007f9dac6a137d in syscall () at /lib64/libc.so.6 #1 0x00007f9dacc3c4f3 in g_cond_wait () at /lib64/libglib-2.0.so.0 #2 0x0000555d12f952da in flush_trace_file (wait=true) at ../trace/simple.c:140 #3 0x0000555d12f95b4c in st_flush_trace_buffer () at ../trace/simple.c:383 #4 0x00007f9dac5e43a7 in __run_exit_handlers () at /lib64/libc.so.6 #5 0x00007f9dac5e4550 in on_exit () at /lib64/libc.so.6 #6 0x0000555d12d454de in os_daemonize () at ../os-posix.c:255 #7 0x0000555d12d0bd5c in qemu_maybe_daemonize (pid_file=0x0) at ../softmmu/vl.c:2408 #8 0x0000555d12d0e566 in qemu_init (argc=8, argv=0x7fffc594d9b8, envp=0x7fffc594da00) at ../softmmu/vl.c:3459 #9 0x0000555d128edac1 in main (argc=8, argv=0x7fffc594d9b8, envp=0x7fffc594da00) at ../softmmu/main.c:49 (gdb) Aside from the 'zombie' process in the host, this is directly impacting Libvirt. Libvirt waits for the parent process to exit to be sure that the QMP monitor is available in the daemonized process to fetch QEMU capabilities, and as is now Libvirt hangs at daemon start waiting for the parent thread to exit. The fix is simple: just move the trace backend related code back to be executed after daemonizing. Fixes: 0546c0609cb5a8d90c1cbac8e0d64b5a048bbb19 Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20210105181437.538366-2-danielhb413@gmail.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-01-05 21:14:37 +03:00
/*
* The trace backend must be initialized after daemonizing.
* trace_init_backends() will call st_init(), which will create the
* trace thread in the parent, and also register st_flush_trace_buffer()
* in atexit(). This function will force the parent to wait for the
* writeout thread to finish, which will not occur, and the parent
* process will be left in the host.
*/
if (!trace_init_backends()) {
exit(1);
}
trace_init_file();
qemu_init_main_loop(&error_fatal);
cpu_timers_init();
user_register_global_props();
replay_configure(icount_opts);
configure_rtc(qemu_find_opts_singleton("rtc"));
/* Transfer QemuOpts options into machine options */
parse_memory_options();
qemu_create_machine(machine_opts_dict);
suspend_mux_open();
qemu_disable_default_devices();
qemu_setup_display();
qemu_create_default_devices();
qemu_create_early_backends();
qemu_apply_legacy_machine_options(machine_opts_dict);
qemu_apply_machine_options(machine_opts_dict);
qobject_unref(machine_opts_dict);
phase_advance(PHASE_MACHINE_CREATED);
/*
* Note: uses machine properties such as kernel-irqchip, must run
* after qemu_apply_machine_options.
*/
configure_accelerators(argv[0]);
phase_advance(PHASE_ACCEL_CREATED);
/*
* Beware, QOM objects created before this point miss global and
* compat properties.
*
* Global properties get set up by qdev_prop_register_global(),
* called from user_register_global_props(), and certain option
* desugaring. Also in CPU feature desugaring (buried in
* parse_cpu_option()), which happens below this point, but may
* only target the CPU type, which can only be created after
* parse_cpu_option() returned the type.
*
* Machine compat properties: object_set_machine_compat_props().
* Accelerator compat props: object_set_accelerator_compat_props(),
* called from do_configure_accelerator().
*/
machine_class = MACHINE_GET_CLASS(current_machine);
if (!qtest_enabled() && machine_class->deprecation_reason) {
warn_report("Machine type '%s' is deprecated: %s",
machine_class->name, machine_class->deprecation_reason);
}
/*
* Create backends before creating migration objects, so that it can
* check against compatibilities on the backend memories (e.g. postcopy
* over memory-backend-file objects).
*/
qemu_create_late_backends();
phase_advance(PHASE_LATE_BACKENDS_CREATED);
/*
* Note: creates a QOM object, must run only after global and
* compat properties have been set up.
*/
migration_object_init();
vl.c: convert cpu_model to cpu type and set of global properties before machine_init() All machines that support user specified cpu_model either call cpu_generic_init() or cpu_class_by_name()/CPUClass::parse_features to parse feature string and to get CPU type to create. Which leads to code duplication and hard-codding default CPU model within machine_foo_init() code. Which makes it impossible to get CPU type before machine_init() is run. So instead of setting default CPUs models and doing parsing in target specific machine_foo_init() in various ways, provide a generic data driven cpu_model parsing before machine_init() is called. in follow up per target patches, it will allow to: * define default CPU type in consistent/generic manner per machine type and drop custom code that fallbacks to default if cpu_model is NULL * drop custom features parsing in targets and do it in centralized way. * for cases of cpu_generic_init(TYPE_BASE/DEFAULT_CPU, "some_cpu") replace it with cpu_create(machine->cpu_type) || cpu_create(TYPE_FOO) depending if CPU type is user settable or not. not doing useless parsing and clearly documenting where CPU model is user settable or fixed one. Patch allows machine subclasses to define default CPU type per machine class at class_init() time and if that is set generic code will parse cpu_model into a MachineState::cpu_type which will be used to create CPUs for that machine instance and allows gradual per board conversion. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <1505318697-77161-4-git-send-email-imammedo@redhat.com> Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-09-13 19:04:55 +03:00
/* parse features once if machine provides default cpu_type */
current_machine->cpu_type = machine_class_default_cpu_type(machine_class);
if (cpu_option) {
current_machine->cpu_type = parse_cpu_option(cpu_option);
vl.c: convert cpu_model to cpu type and set of global properties before machine_init() All machines that support user specified cpu_model either call cpu_generic_init() or cpu_class_by_name()/CPUClass::parse_features to parse feature string and to get CPU type to create. Which leads to code duplication and hard-codding default CPU model within machine_foo_init() code. Which makes it impossible to get CPU type before machine_init() is run. So instead of setting default CPUs models and doing parsing in target specific machine_foo_init() in various ways, provide a generic data driven cpu_model parsing before machine_init() is called. in follow up per target patches, it will allow to: * define default CPU type in consistent/generic manner per machine type and drop custom code that fallbacks to default if cpu_model is NULL * drop custom features parsing in targets and do it in centralized way. * for cases of cpu_generic_init(TYPE_BASE/DEFAULT_CPU, "some_cpu") replace it with cpu_create(machine->cpu_type) || cpu_create(TYPE_FOO) depending if CPU type is user settable or not. not doing useless parsing and clearly documenting where CPU model is user settable or fixed one. Patch allows machine subclasses to define default CPU type per machine class at class_init() time and if that is set generic code will parse cpu_model into a MachineState::cpu_type which will be used to create CPUs for that machine instance and allows gradual per board conversion. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <1505318697-77161-4-git-send-email-imammedo@redhat.com> Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-09-13 19:04:55 +03:00
}
/* NB: for machine none cpu_type could STILL be NULL here! */
qemu_resolve_machine_memdev();
parse_numa_opts(current_machine);
vl.c: convert cpu_model to cpu type and set of global properties before machine_init() All machines that support user specified cpu_model either call cpu_generic_init() or cpu_class_by_name()/CPUClass::parse_features to parse feature string and to get CPU type to create. Which leads to code duplication and hard-codding default CPU model within machine_foo_init() code. Which makes it impossible to get CPU type before machine_init() is run. So instead of setting default CPUs models and doing parsing in target specific machine_foo_init() in various ways, provide a generic data driven cpu_model parsing before machine_init() is called. in follow up per target patches, it will allow to: * define default CPU type in consistent/generic manner per machine type and drop custom code that fallbacks to default if cpu_model is NULL * drop custom features parsing in targets and do it in centralized way. * for cases of cpu_generic_init(TYPE_BASE/DEFAULT_CPU, "some_cpu") replace it with cpu_create(machine->cpu_type) || cpu_create(TYPE_FOO) depending if CPU type is user settable or not. not doing useless parsing and clearly documenting where CPU model is user settable or fixed one. Patch allows machine subclasses to define default CPU type per machine class at class_init() time and if that is set generic code will parse cpu_model into a MachineState::cpu_type which will be used to create CPUs for that machine instance and allows gradual per board conversion. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <1505318697-77161-4-git-send-email-imammedo@redhat.com> Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-09-13 19:04:55 +03:00
if (vmstate_dump_file) {
/* dump and exit */
module_load_qom_all();
dump_vmstate_json_to_file(vmstate_dump_file);
exit(0);
}
if (!preconfig_requested) {
qmp_x_exit_preconfig(&error_fatal);
}
qemu_init_displays();
accel_setup_post(current_machine);
os_setup_post();
resume_mux_open();
}