Unconditional bswap replaced by __get_user/__put_user.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The previous formuation with multiple assignments to __typeof(*hptr) falls
down when hptr is qualified const. E.g. with const struct S *p, p->f is
also qualified const.
With this formulation, there's no assignment to any local variable.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
We've now optimized the ld/st versions; reuse that for the "legacy"
versions. Always use inlines so that we get the type checking that
we expect.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Use the new host endian unaligned access functions instead of
open coding byte-by-byte references. Remove assembly special
cases for i386 and ppc -- we've now exposed the operation to
the compiler sufficiently for these to be optimized automatically.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Move the bswap_N -> bswapN wrappers inside CONFIG_BYTESWAP_H.
Change the ultimate fallback defintions from macros to inline functions.
The proper types recieved by the function arguments means we can remove
unnecessary casts, making the code more readable.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Fixes the libfdt enabled build for hosts that have <machine/bswap.h>.
The code at the beginning of qemu/bswap.h is attempting to standardize
on bswapN. In the case of CONFIG_MACHINE_BSWAP_H, this is all we get.
In the case of CONFIG_BYTESWAP_H, we get bswap_N from the system header
and then wrap these with inline functions to get bswapN.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* stefanha/trivial-patches:
hw/pc.c: Fix converting of ioport_register* to MemoryRegion
Replace remaining gmtime, localtime by gmtime_r, localtime_r
savevm: Remove MinGW specific code which is no longer needed
qga/channel-posix.c: Explicitly include string.h
configure: Fix comment (copy+paste bug)
readline: avoid memcpy() of overlapping regions
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* afaerber-or/prep-up:
prep: Use pc87312 device instead of collection of random ISA devices
prep: Add pc87312 Super I/O emulation
prep: Include devices for ppc64 as well
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The commit 258711 introduced MemoryRegion to replace ioport_region*
for ioport 80h and F0h.
A MemoryRegion needs to have both read and write callback otherwise a segfault
will occur when an access is made.
The previous behaviour of this both ioport is to return 0xffffffffffffffff.
So keep this behaviour.
Reported-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Tested-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This allows removing of MinGW specific code and improves
reentrancy for POSIX hosts.
[Removed unused ret variable in qemu_get_timedate() to fix warning:
vl.c: In function ‘qemu_get_timedate’:
vl.c:451:16: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable]
-- Stefan Hajnoczi]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
QEMU provides a portable function qemu_gettimeofday instead of
gettimeofday and also an implementation of localtime_r for MinGW.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Explicitly include string.h to avoid warnings under MacOS X/clang
about implicit declarations of strerror() and strlen().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The WARNING message from commit f7e4dd6c made me notice.
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Starting with release 1.4 we have a fully functional q35 machine type,
i.e. "qemu -M q35" JustWorks[tm]. Update machine type names to reflect
that:
* pc-1.4 becomes pc-i440fx-1.4
* q35-next becomes pc-q35-1.4
The pc-1.3 (+older) names are maintained for compatibility reasons.
For the same reason the "pc" and "q35" aliases are kept. pc-piix-1.4
continues to be the default machine type, again for compatibility
reasons.
Also updated the description (shown by "qemu -M ?") with host bridge
name, south bridge name and chipset release year.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When the device is reset, the SCSI bus should also be reset so
that in-flight I/O is cancelled.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since 39bffca203 (qdev: register all
types natively through QEMU Object Model), TypeInfo as used in
the common, non-iterative pattern is no longer amended with information
and should therefore be const.
Fix the documented QOM examples:
sed -i 's/static TypeInfo/static const TypeInfo/g' include/qom/object.h
Since frequently the wrong examples are being copied by contributors of
new devices, fix all types in the tree:
sed -i 's/^static TypeInfo/static const TypeInfo/g' */*.c
sed -i 's/^static TypeInfo/static const TypeInfo/g' */*/*.c
This also avoids to piggy-back these changes onto real functional
changes or other refactorings.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* kraxel/build.1:
m48t59-test: don't touch watchdog
rtc-test: skip year-2038 overflow check in case time_t is 32bit only
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The current implementation of os_host_main_loop_wait() on Windows,
returns 1 only when a g_poll() event occurs because the return value of
select() is overridden. This is wrong as we may skip a socket event, as
shown in this example:
1. select() returns 0
2. g_poll() returns 1 (socket event occurs)
3. os_host_main_loop_wait() returns 1
4. qemu_iohandler_poll() sees no socket event because select() has
return before the event occurs
5. select() returns 1
6. g_poll() returns 0 (g_poll overrides select's return value)
7. os_host_main_loop_wait() returns 0
8. qemu_iohandler_poll() doesn't check for socket events because the
return value of os_host_main_loop_wait() is zero.
9. goto 5
This patch use one variable for each of these return values, so we don't
miss a select() event anymore.
Also move the call to select() after g_poll(), this will improve latency
as we don't have to go through two os_host_main_loop_wait() calls to
detect a socket event.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Adds sample hook scripts for --fsfreeze-hook option of qemu-ga.
- fsfreeze-hook : execute scripts in fsfreeze-hook.d/
- fsfreeze-hook.d/mysql-flush.sh.sample : quiesce MySQL before snapshot
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
To use the online disk snapshot for online-backup, application-level
consistency of the snapshot image is required. However, currently the
guest agent can provide only filesystem-level consistency, and the
snapshot may contain dirty data, for example, incomplete transactions.
This patch provides the opportunity to quiesce applications before
snapshot is taken.
If --fsfreeze-hook option is specified, the hook is executed with
"freeze" argument before the filesystem is frozen by fsfreeze-freeze
command. As for fsfreeze-thaw command, the hook is executed with "thaw"
argument after the filesystem is thawed.
This patch depends on patchset to improve error reporting by Luiz Capitulino:
http://lists.gnu.org/archive/html/qemu-devel/2012-11/msg03016.html
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
*clarified usage in help output
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Most errors are QERR_UNDEFINED_ERROR today.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Most errors are QERR_UNDEFINED_ERROR today.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Convert them to error_setg_errno().
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Convert them to error_setg_errno().
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Convert them to error_setg_errno().
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Most errors are QERR_UNDEFINED_ERROR. Also, adds ga_wait_child() as
a future commit will use it too.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Use error_setg_errno() when possible with an improved error description.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
*Fixed missing space character in error message
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
* afaerber/qom-cpu:
target-i386: Explicitly set vendor for each built-in cpudef
target-i386: Sanitize AMD's ext2_features at realize time
target-i386: Filter out unsupported features at realize time
qemu-common.h: Make qemu_init_vcpu() stub static inline
target-i386: check/enforce: Eliminate check_feat field
target-i386: check/enforce: Check SVM flag support as well
target-i386: check/enforce: Check all CPUID.80000001H.EDX bits
target-i386: check/enforce: Do not ignore "hypervisor" flag
target-i386: check/enforce: Fix CPUID leaf numbers on error messages
target-i386: kvm: Enable all supported KVM features for -cpu host
target-i386: kvm: -cpu host: Use GET_SUPPORTED_CPUID for SVM features
cpu: Change parent type to Device
qdev: Don't assume existence of parent bus on unparenting
qdev: Include qdev code into *-user, too
libqemustub: sysbus_get_default() stub
libqemustub: vmstate register/unregister stubs
libqemustub: Add qemu_[un]register_reset() stubs
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
VFIO_PCI_NUM_REGIONS and VFIO_PCI_NUM_IRQS should never have been
used in this manner as it locks a specific kernel implementation.
Future features may introduce new regions or interrupt entries
(VGA may add legacy ranges, AER might add an IRQ for error
signalling). Fix this before it gets us into trouble.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org
Guests typically enable MSI-X with all of the vectors in the MSI-X
vector table masked. Only when the vector is enabled does the vector
get unmasked, resulting in a vector_use callback. These two points,
enable and unmask, correspond to pci_enable_msix() and request_irq()
for Linux guests. Some drivers rely on VF/PF or PF/fw communication
channels that expect the physical state of the device to match the
guest visible state of the device. They don't appreciate lazily
enabling MSI-X on the physical device.
To solve this, enable MSI-X with a single vector when the MSI-X
capability is enabled and immediate disable the vector. This leaves
the physical device in exactly the same state between host and guest.
Furthermore, the brief gap where we enable vector 0, it fires into
userspace, not KVM, so the guest doesn't get spurious interrupts.
Ideally we could call VFIO_DEVICE_SET_IRQS with the right parameters
to enable MSI-X with zero vectors, but this will currently return an
error as the Linux MSI-X interfaces do not allow it.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: qemu-stable@nongnu.org
Since cpudef config is not supported anymore and all remaining sources
now always set x86_def_t.vendor[123] fields, remove setting default
vendor to simplify future re-factoring.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
When CPU properties are implemented, ext2_features may change
between object_new(CPU) and cpu_realize_fn(). Sanitizing
ext2_features for AMD based CPU at realize() time will keep
current behavior after CPU features are converted to properties.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Turn the *-user macro into a no-op inline function to avoid
unused-variable warnings and band-aiding #ifdef'ery.
This allows to drop an #ifdef for alpha and avoids more for unicore32
and other upcoming trivial realizefn implementations.
Suggested-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Now that all entries have check_feat=~0 in
kvm_check_features_against_host(), we can eliminate check_feat entirely
and make the code check all bits.
This patch shouldn't introduce any behavior change, as check_feat is set
to ~0 on all entries.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
When nested SVM is supported, the kernel returns the SVM flag on
GET_SUPPORTED_CPUID[1], so we can check the SVM flag safely in
kvm_check_features_against_host().
I don't know why the original code ignored the SVM flag. Maybe it was
because kvm_cpu_fill_host() used the CPUID instruction directly instead
of GET_SUPPORTED_CPUID
[1] Older kernels (before v2.6.37) returned the SVM flag even if nested
SVM was _not_ supported. So the only cases where this patch should
change behavior is when SVM is being requested by the user or the
CPU model, but not supported by the host. And on these cases we
really want QEMU to abort if the "enforce" option is set.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
