Commit Graph

33793 Commits

Author SHA1 Message Date
Paolo Bonzini
2bd3bce8ef block: asynchronously stop the VM on I/O errors
With virtio-blk dataplane, I/O errors might occur while QEMU is
not in the main I/O thread.  However, it's invalid to call vm_stop
when we're neither in a VCPU thread nor in the main I/O thread,
even if we were to take the iothread mutex around it.

To avoid this problem, we can raise a request to the main I/O thread,
similar to what QEMU does when vm_stop is called from a CPU thread.
We know that bdrv_error_action is called from an AIO callback, and
the moment at which the callback will fire is not well-defined; it
depends on the moment at which the disk or OS finishes the operation,
which can happen at any time.  Note that QEMU is certainly not in a CPU
thread and we do not need to call cpu_stop_current() like vm_stop() does.

However, we need to ensure that any action taken by management will
result in correct detection of the error _and_ a running VM.  In particular:

- the event must be raised after the iostatus has been set, so that
"info block" will return an iostatus that matches the event.

- the VM must be stopped after the iostatus has been set, so that
"info block" will return an iostatus that matches the runstate.

The ordering between the STOP and BLOCK_IO_ERROR events is preserved;
BLOCK_IO_ERROR is documented to come first.

This makes bdrv_error_action() thread safe (assuming QMP events are,
which is attacked by a separate series).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-23 16:36:13 +08:00
Paolo Bonzini
74892d2468 vl: allow other threads to do qemu_system_vmstop_request
There patch protects vmstop_requested with a lock and introduces
qemu_system_vmstop_request_prepare.

Together with the new call to qemu_vmstop_requested in vm_start,
qemu_system_vmstop_request_prepare avoids a race where the VM could remain
stopped even though the iostatus of a block device has already been set
(for example).

qemu_system_vmstop_request_prepare however also lets the caller thread
delay observation of the state change until it has itself communicated
that change to the user.  This delay avoids any possibility of a wrong
reordering of the BLOCK_IO_ERROR event and the subsequent STOP event.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-23 16:36:13 +08:00
Liu Yuan
5d5da114b3 sheepdog: fix NULL dereference in sd_create
Following command

qemu-img create -f qcow2 sheepdog:test 20g

will cause core dump because aio_context is NULL in sd_create. We should
initialize it by qemu_get_aio_context() to avoid NULL dereference.

Cc: qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-23 16:36:13 +08:00
Chunyan Liu
435db4cf29 QemuOpts: check NULL opts in qemu_opt_get functions
Some places will call bdrv_create_file(filename, NULL, &local_err), where
opts is NULL. Check NULL in qemu_opt_get and qemu_opt_get_*_del functions,
to avoid extra effort of checking opts before calling them every time.

Signed-off-by: Chunyan Liu <cyliu@suse.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-21 16:40:14 +08:00
Peter Crosthwaite
999e5aa5ce block: m25p80: Support read only bdrvs.
By just never doing write-backs. This is completely invisible to the
guest, as the entire storage area is implemented as device state (at
realize time the entire drive is read in).

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-21 16:40:14 +08:00
Peter Crosthwaite
fc1084aad7 block: m25p80: sync_page(): Deindent function body.
sync_page() was conditionalizing it's whole fn body on the bdrv being
non-null. Just return for the function immediately on NULL brdv and
get rid of the big if.

Makes implementation consistent with flash_zynq_area().

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-21 16:40:14 +08:00
Sanjay Lal
427e1750a0 gt64xxx_pci: Add VMStateDescription
Add VMStateDescription for GT64120 PCI emulation used by the Malta
platform, to allow it to work with savevm/loadvm and live migration.

The entire register array is saved/restored using VMSTATE_UINT32_ARRAY
(fixed length GT_REGS = 1024).

Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
[james.hogan@imgtec.com: Convert to VMState]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Andreas Färber <afaerber@suse.de>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2014-06-20 23:40:16 +02:00
Aurelien Jarno
5ab5c04170 target-mips: copy CP0_Config1 into DisasContext
In order to avoid access to the CPUMIPSState structure in the
translator, keep a copy of CP0_Config1 into DisasContext. The whole
register is read-only so it can be copied as a single value.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2014-06-20 22:14:13 +02:00
Peter Maydell
d70a319b8d Merge remote-tracking branch 'remotes/kvm/uq/master' into staging
* remotes/kvm/uq/master:
  hw/mips: malta: Don't boot from flash with KVM T&E
  MAINTAINERS: Add entry for MIPS KVM
  target-mips: Enable KVM support in build system
  hw/mips: malta: Add KVM support
  hw/mips: In KVM mode, inject IRQ2 (I/O) interrupts via ioctls
  target-mips: Call kvm_mips_reset_vcpu() from mips_cpu_reset()
  target-mips: kvm: Add main KVM support for MIPS
  kvm: Allow arch to set sigmask length
  target-mips: get_physical_address: Add KVM awareness
  target-mips: get_physical_address: Add defines for segment bases
  hw/mips: Add API to convert KVM guest KSEG0 <-> GPA
  hw/mips/cputimer: Don't start periodic timer in KVM mode
  target-mips: Reset CPU timer consistently
  KVM: Fix GSI number space limit

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20 19:25:18 +01:00
Peter Maydell
0a99aae5fa pc,pci,virtio,hotplug fixes, enhancements
numa work by Hu Tao and others
 memory hotplug by Igor
 vhost-user by Nikolay, Antonios and others
 guest virtio announcements by Jason
 qtest fixes by Sergey
 qdev hotplug fixes by Paolo
 misc other fixes mostly by myself
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,pci,virtio,hotplug fixes, enhancements

numa work by Hu Tao and others
memory hotplug by Igor
vhost-user by Nikolay, Antonios and others
guest virtio announcements by Jason
qtest fixes by Sergey
qdev hotplug fixes by Paolo
misc other fixes mostly by myself

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

* remotes/mst/tags/for_upstream: (109 commits)
  numa: use RAM_ADDR_FMT with ram_addr_t
  qapi/string-output-visitor: fix bugs
  tests: simplify code
  qapi: fix input visitor bugs
  acpi: rephrase comment
  qmp: add ACPI_DEVICE_OST event handling
  qmp: add query-acpi-ospm-status command
  acpi: implement ospm_status() method for PIIX4/ICH9_LPC devices
  acpi: introduce TYPE_ACPI_DEVICE_IF interface
  qmp: add query-memory-devices command
  numa: handle mmaped memory allocation failure correctly
  pc: acpi: do not hardcode preprocessor
  qmp: clean out whitespace
  qdev: recursively unrealize devices when unrealizing bus
  qdev: reorganize error reporting in bus_set_realized
  qapi: fix build on glib < 2.28
  qapi: make string output visitor parse int list
  qapi: make string input visitor parse int list
  tests: fix memory leak in test of string input visitor
  hmp: add info memdev
  ...

Conflicts:
	include/hw/i386/pc.h
[PMM: fixed minor conflict in pc.h]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20 18:01:24 +01:00
Peter Maydell
53001c1483 target-arm:
* Support PSCI 0.2 when using KVM
  * fix AIRCR reset value for v7M CPUs
  * report correct size information for pflash_cfi01
  * minor coverity fixes
  * avoid warnings on Windows builds due to #define clash
  * implement TTBCR PD0/PD1 bits
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140619' into staging

target-arm:
 * Support PSCI 0.2 when using KVM
 * fix AIRCR reset value for v7M CPUs
 * report correct size information for pflash_cfi01
 * minor coverity fixes
 * avoid warnings on Windows builds due to #define clash
 * implement TTBCR PD0/PD1 bits

# gpg: Signature made Thu 19 Jun 2014 18:35:06 BST using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"

* remotes/pmaydell/tags/pull-target-arm-20140619:
  armv7m_nvic: fix AIRCR implementation
  Use PSCI v0.2 compatible string when KVM or TCG provides it
  target-arm: Introduce per-CPU field for PSCI version
  target-arm: Implement kvm_arch_reset_vcpu() for KVM ARM64
  target-arm: Enable KVM_ARM_VCPU_PSCI_0_2 feature when possible
  target-arm: Common kvm_arm_vcpu_init() for KVM ARM and KVM ARM64
  kvm: Handle exit reason KVM_EXIT_SYSTEM_EVENT
  hw/block/pflash_cfi01: Report correct size info for parallel configs
  hw/arm/vexpress: Forbid specifying flash contents in two ways at once
  target-arm/translate-a64.c: Fix dead ?: in handle_simd_shift_fpint_conv()
  target-arm/translate-a64.c: Remove dead ?: in disas_simd_3same_int()
  target-arm: Add ULL suffix to calculation of page size
  hw/arm/spitz: Avoid clash with Windows header symbol MOD_SHIFT
  target-arm: implement PD0/PD1 bits for TTBCR

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20 17:41:09 +01:00
Peter Maydell
9d3c512021 vnc: cleanups and fixes
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Merge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20140619-1' into staging

vnc: cleanups and fixes

# gpg: Signature made Thu 19 Jun 2014 12:02:09 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-vnc-20140619-1:
  vnc: fix screen updates
  vnc: Drop superfluous conditionals around g_strdup()
  vnc: Drop superfluous conditionals around g_free()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20 16:57:28 +01:00
Gerd Hoffmann
e8e23b7dcf spice: fix 32bit build
Tested-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1403244764-8622-1-git-send-email-kraxel@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20 16:22:07 +01:00
Peter Maydell
a096922bef Merge remote-tracking branch 'remotes/rth/tcg-next' into staging
* remotes/rth/tcg-next:
  tcg/optimize: Don't special case TCG_OPF_CALL_CLOBBER

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-20 15:44:31 +01:00
James Hogan
3c5d0be553 hw/mips: malta: Don't boot from flash with KVM T&E
In KVM trap & emulate (T&E) mode the flash reset region at 0xbfc00000
isn't executable, which is why the minimal kernel bootloader is loaded
and executed from the last 1MB of DRAM instead.

Therefore if no kernel is provided on the command line and KVM is
enabled, exit with an error since booting from flash will fail.

Reported-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-20 13:51:29 +02:00
Oran Avraham
b6fb3a89e3 armv7m_nvic: fix AIRCR implementation
The returned reset value was wrong (off by one zero nibble), and
qemu didn't log unimplemented writes to the PRIGROUP field.

Signed-off-by: Oran Avraham <oranav@gmail.com>
Message-id: 1403010447-4627-1-git-send-email-oranav@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:33:05 +01:00
Pranavkumar Sawargaonkar
06955739a2 Use PSCI v0.2 compatible string when KVM or TCG provides it
If we have PSCI v0.2 emulation available for KVM ARM/ARM64 or TCG then
we need to provide PSCI v0.2 compatible string via generated DTB.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Reviewed-by: Rob Herring <rob.herring@linaro.org>
Message-id: 1402901605-24551-9-git-send-email-pranavkumar@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:33:05 +01:00
Pranavkumar Sawargaonkar
dd032e3487 target-arm: Introduce per-CPU field for PSCI version
We require to know the PSCI version available to given CPU at
potentially many places. Currently, we need to know PSCI version
when generating DTB for virt machine.

This patch introduce per-CPU 32bit field representing the PSCI
version available to the CPU. The encoding of this 32bit field
is same as described in PSCI v0.2 spec.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402901605-24551-8-git-send-email-pranavkumar@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:33:04 +01:00
Pranavkumar Sawargaonkar
73542cf690 target-arm: Implement kvm_arch_reset_vcpu() for KVM ARM64
To implement kvm_arch_reset_vcpu(), we simply re-init the VCPU
using kvm_arm_vcpu_init() so that all registers of VCPU are set
to their reset values by in-kernel KVM code.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402901605-24551-7-git-send-email-pranavkumar@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:33:03 +01:00
Pranavkumar Sawargaonkar
7cd62e5384 target-arm: Enable KVM_ARM_VCPU_PSCI_0_2 feature when possible
Latest linux kernel supports in-kernel emulation of PSCI v0.2 but
to enable it we need to select KVM_ARM_VCPU_PSCI_0_2 feature using
KVM_ARM_VCPU_INIT ioctl.

Also, we can use KVM_ARM_VCPU_PSCI_0_2 feature for VCPU only when
linux kernel has KVM_CAP_ARM_PSCI_0_2 capability.

This patch updates kvm_arch_init_vcpu() to enable KVM_ARM_VCPU_PSCI_0_2
feature for VCPU when KVM ARM/ARM64 has KVM_CAP_ARM_PSCI_0_2 capability.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402901605-24551-6-git-send-email-pranavkumar@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:33:03 +01:00
Pranavkumar Sawargaonkar
228d5e048b target-arm: Common kvm_arm_vcpu_init() for KVM ARM and KVM ARM64
Introduce a common kvm_arm_vcpu_init() for doing KVM_ARM_VCPU_INIT
ioctl in KVM ARM and KVM ARM64. This also helps us factor-out few
common code lines from kvm_arch_init_vcpu() for KVM ARM/ARM64.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402901605-24551-5-git-send-email-pranavkumar@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:33:02 +01:00
Pranavkumar Sawargaonkar
99040447ce kvm: Handle exit reason KVM_EXIT_SYSTEM_EVENT
In-kernel PSCI v0.2 emulation of KVM ARM/ARM64 forwards SYSTEM_OFF
and SYSTEM_RESET function calls to QEMU using KVM_EXIT_SYSTEM_EVENT
exit reason.

This patch updates kvm_cpu_exec() to handle KVM_SYSTEM_EVENT_SHUTDOWN
and KVM_SYSTEM_EVENT_RESET system-level events from QEMU-side.

Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402901605-24551-4-git-send-email-pranavkumar@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:06:25 +01:00
Peter Maydell
a0289b8af3 hw/block/pflash_cfi01: Report correct size info for parallel configs
If the flash device is configured with a device-width which is
not equal to the bank-width, indicating that it is actually several
narrow flash devices in parallel, the CFI table should report the
number of blocks and the size of a single device, not of the whole
combined setup. This stops Linux from complaining:
"NOR chip too large to fit in mapping. Attempting to cope..."

As usual, we retain the old broken but backwards compatible behaviour
when the device-width is not specified.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402409025-25694-1-git-send-email-peter.maydell@linaro.org
2014-06-19 18:06:25 +01:00
Peter Maydell
476e75ab9d hw/arm/vexpress: Forbid specifying flash contents in two ways at once
Detect attempts by the user to specify the contents of the first flash
device via both -bios and -drive if=pflash... simultaneously and
print a helpful error message.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1402419834-25982-1-git-send-email-peter.maydell@linaro.org
2014-06-19 18:06:25 +01:00
Peter Maydell
4063452eca target-arm/translate-a64.c: Fix dead ?: in handle_simd_shift_fpint_conv()
In handle_simd_shift_fpint_conv(), the combination of is_double == true,
is_scalar == false and is_q == false is an unallocated encoding; the
'both parts false' case of the nested ?: expression for calculating
maxpass is therefore unreachable and can be removed.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1402171881-14343-4-git-send-email-peter.maydell@linaro.org
2014-06-19 18:06:25 +01:00
Peter Maydell
220ad4ca84 target-arm/translate-a64.c: Remove dead ?: in disas_simd_3same_int()
In disas_simd_3same_int(), none of the instructions permit is_q
to be false with size == 3 (this would be a vector operation with
a one-element vector, and the instruction set encodes those as
scalar operations). Replace the always-true ?: check with an
assert.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1402171881-14343-3-git-send-email-peter.maydell@linaro.org
2014-06-19 18:06:24 +01:00
Peter Maydell
5661ae6be2 target-arm: Add ULL suffix to calculation of page size
The maximum block size for AArch64 address translation is 2GB. This means
that we need a ULL suffix on our shift to avoid shifting into the sign
bit of a signed 32 bit integer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1402171881-14343-2-git-send-email-peter.maydell@linaro.org
2014-06-19 18:06:24 +01:00
Peter Maydell
0062609f70 hw/arm/spitz: Avoid clash with Windows header symbol MOD_SHIFT
The Windows headers provided by MinGW define MOD_SHIFT. Avoid
it by using SPITZ_MOD_* for our constants here.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:06:24 +01:00
Fabian Aggeler
e389be1673 target-arm: implement PD0/PD1 bits for TTBCR
Corrected handling of writes to TTBCR for ARMv8 (previously UNK/SBZP
bits are not RES0) and ARMv7 (new bits PD0/PD1 for CPUs with Security
Extensions).

Bits PD0/PD1 are now respected in get_phys_addr_v6/v5() and
get_level1_table_address.

Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch>
Message-id: 1402409556-18574-1-git-send-email-aggelerf@ethz.ch
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-19 18:06:24 +01:00
Michael S. Tsirkin
705456c0d7 numa: use RAM_ADDR_FMT with ram_addr_t
commit 4407ab055be995e64633322a78e64dfa376dc534
    vl.c: extend -m option to support options for memory hotplug
prints ram_addr_t with u64 format, this is wrong for
some systems, in particular w32.

print ram_addr_t with RAM_ADDR_FMT to fix build on w32.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Michael S. Tsirkin
56fdfb6106 qapi/string-output-visitor: fix bugs
in human mode, we are creating the string:

16-31 (16-31)

instead of

16-17 (10-1f)

because we forgot to pass 'true' as the human parameter on one of the
two calls to format_string.
Also, this is a worsening of quality; previously we would produce

16 (0x10)

to make it obvious which number was hex.
Fix these issues.

Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2014-06-19 18:44:22 +03:00
Michael S. Tsirkin
6ffa169576 tests: simplify code
Use error_abort instead of open-coded assert.
Cleaner and shorter.

Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2014-06-19 18:44:22 +03:00
Michael S. Tsirkin
c210ee95f2 qapi: fix input visitor bugs
Remove dead code.  Reset errno to 0 before each strtoull call, as the
man page requires.

Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2014-06-19 18:44:22 +03:00
Michael S. Tsirkin
b4acfbcd95 acpi: rephrase comment
"only upto" is not proper English.
Say "up to" and drop "only".

Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
02edd407f3 qmp: add ACPI_DEVICE_OST event handling
emits event when ACPI OSPM evaluates _OST method
of ACPI device.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
02419bcb3f qmp: add query-acpi-ospm-status command
... to get ACPI OSPM status reported by ACPI devices
via _OST method.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
43f5041008 acpi: implement ospm_status() method for PIIX4/ICH9_LPC devices
... using TYPE_ACPI_DEVICE_IF interface.
Which provides status reporting of ACPI declared memory devices

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
521b3673ac acpi: introduce TYPE_ACPI_DEVICE_IF interface
... it will be used to abstract generic ACPI bits from
device that implements ACPI interface.

ACPIOSTInfo type is used for passing-through raw _OST
event/status codes reported by guest OS to a management
layer. It lets management tools interpret values
as specified by ACPI spec if it is interested in it.

QEMU doesn't encode these values as enum, since it
doesn't need to handle them and it allows interface
to scale well without any changes in QEMU while guest
OS and management evolves in time.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
6f2e27301d qmp: add query-memory-devices command
... allowing to get state of present memory devices.
Currently implemented only for PCDIMMDevice.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
c3ba309507 numa: handle mmaped memory allocation failure correctly
when memory_region_init_ram_from_file() fails
memory_region_size() will still return size that was
provided at region init time.
Instead use errp to properly detect error condition.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:22 +03:00
Igor Mammedov
dc61b29531 pc: acpi: do not hardcode preprocessor
but use one provided by environment, in addition
force C style preprocessing so that 'gcc -E' or
"clang -E" wouldn't ignore .dsl files.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:21 +03:00
Michael S. Tsirkin
c059451cc1 qmp: clean out whitespace
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:21 +03:00
Paolo Bonzini
5942a19040 qdev: recursively unrealize devices when unrealizing bus
When the patch was posted that became 5c21ce7 (qdev: Realize buses
on device realization, 2014-03-12), it included recursive realization
and unrealization of devices when the bus's "realized" property
was toggled.

However, due to the same old worries about recursive realization
and prerequisites not being realized yet, those hunks were dropped when
committing the patch.  Unfortunately, this causes a use-after-free bug
(easily reproduced by a PCI hot-unplug action).

Before the patch, device_unparent behaved as follows:

   for each child bus
     unparent bus ----------------------------.
     | for each child device                  |
     |   unparent device ---------------.     |
     |   | unrealize device             |     |
     |   | call dc->unparent            |     |
     |   '-------------------------------     |
     '----------------------------------------'
   unrealize device

After the patch, it behaves as follows instead:

   unrealize device --------------------.
   | for each child bus                 |
   |   unrealize bus               (A)  |
   '------------------------------------'
   for each child bus
     unparent bus ----------------------.
     | for each child device            |
     |   unrealize device          (B)  |
     |   call dc->unparent              |
     '----------------------------------'

At the step marked (B) the device might use data from the bus that is
not available anymore due to step (A).

To fix this, we need to unrealize devices before step (A).  To sidestep
concerns about recursive realization, only do recursive unrealization
and leave the "value && !bus->realized" case as it is.

The resulting flow is:

   for each child bus
     unrealize bus ---------------------.
     | for each child device            |
     |   unrealize device          (B)  |
     | call bc->unrealize          (A)  |
     '----------------------------------'
   unrealize device
   for each child bus
     unparent bus ----------------------.
     | for each child device            |
     |   unparent device                |
     '----------------------------------'

where everything is "powered down" before it is unassembled.

Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
2014-06-19 18:44:21 +03:00
Paolo Bonzini
b7b34d055d qdev: reorganize error reporting in bus_set_realized
No semantic change.

Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
2014-06-19 18:44:21 +03:00
Michael S. Tsirkin
0d156683f6 qapi: fix build on glib < 2.28
The following commits:
    qapi: make string output visitor parse int list
    qapi: make string input visitor parse int list
break with glib < 2.28 since they use the
new g_list_free_full function.

Open-code that to fix build on old systems.

Cc: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:21 +03:00
Hu Tao
69e255635d qapi: make string output visitor parse int list
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: split up patch
2014-06-19 18:44:21 +03:00
Hu Tao
659268ffbf qapi: make string input visitor parse int list
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: split up patch
2014-06-19 18:44:21 +03:00
Hu Tao
cac124d17c tests: fix memory leak in test of string input visitor
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:21 +03:00
Hu Tao
eb1539b234 hmp: add info memdev
This is the hmp counterpart of qmp query-memdev.

Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: fix build on 32 bit
2014-06-19 18:44:21 +03:00
Hu Tao
76b5d8507d qmp: add query-memdev
Add qmp command query-memdev to query for information
of memory devices

Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:21 +03:00