Since commit b6607a1a20, serial_hds_isa_init() was introduced to
factor out serial_isa_init() loops. However, sun4uv shouldn't start from
0 when there is a mm serial on 0 already. Add a "from" argument to
serial_hds_isa_init().
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20161022095318.17775-5-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cluster x2APIC cannot work without KVM's x2apic API when the maximal
APIC ID is greater than 8 and only KVM's LAPIC can support x2APIC, so we
forbid other APICs and also the old KVM case with less than 9, to
simplify the code.
There is no point in enabling EIM in forbidden APICs, so we keep it
enabled only for the KVM APIC; unconditionally, because making the
option depend on KVM version would be a maintanance burden.
Old QEMUs would enable eim whenever intremap was on, which would trick
guests into thinking that they can enable cluster x2APIC even if any
interrupt destination would get clamped to 8 bits.
Depending on your configuration, QEMU could notice that the destination
LAPIC is not present and report it with a very non-obvious:
KVM: injection failed, MSI lost (Operation not permitted)
Or the guest could say something about unexpected interrupts, because
clamping leads to aliasing so interrupts were being delivered to
incorrect VCPUs.
KVM_X2APIC_API is the feature that allows us to enable EIM for KVM.
QEMU 2.7 allowed EIM whenever interrupt remapping was enabled. In order
to keep backward compatibility, we again allow guests to misbehave in
non-obvious ways, and make it the default for old machine types.
A user can enable the buggy mode it with "x-buggy-eim=on".
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The default (auto) emulates the current behavior.
A user can now control EIM like
-device intel-iommu,intremap=on,eim=off
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* there no point in configuring the device if realization is going to
fail, so move the check to the beginning,
* create a separate function for the check,
* use error_setg() instead error_report().
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The MMIO interface to APIC only allowed 8 bit addresses, which is not
enough for 32 bit addresses from EIM remapping.
Intel stored upper 24 bits in the high MSI address, so use the same
technique. The technique is also used in KVM MSI interface.
Other APICs are unlikely to handle those upper bits.
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The MMIO based interface to APIC doesn't work well with MSIs that have
upper address bits set (remapped x2APIC MSIs). A specialized interface
is a quick and dirty way to avoid the shortcoming.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The Trigger Mode field of IOAPIC must match the Trigger Mode in
the IRTE according to VT-d Spec 5.1.5.1.
Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Replace repeated pattern
for (i = 0; i < nb_numa_nodes; i++) {
if (test_bit(idx, numa_info[i].node_cpu)) {
...
break;
with a helper function to lookup numa node index for cpu.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David Kiarie <davidkiarie4@gmail.com>
Message-Id: <1475553808-13285-2-git-send-email-davidkiarie4@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We can teach Xen to drain and flush each device as it needs to, instead
of trying to flush ALL devices. This removes the last user of
blk_flush_all.
The function is therefore removed under the premise that any new uses
of blk_flush_all would be the wrong paradigm: either flush the single
device that requires flushing, or use an appropriate flush_all mechanism
from outside of the BlkBackend layer.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The trace points for hw/mem/pc-dimm.c were mistakenly put
in the hw/i386/trace-events file, instead of hw/mem/trace-events
in
commit 5eb76e480b
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Thu Jun 16 09:40:10 2016 +0100
trace: split out trace events for hw/i386/ directory
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1473872624-23285-4-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
CPUState is a fairly common pointer to pass to these helpers. This means
if you need other arguments for the async_run_on_cpu case you end up
having to do a g_malloc to stuff additional data into the routine. For
the current users this isn't a massive deal but for MTTCG this gets
cumbersome when the only other parameter is often an address.
This adds the typedef run_on_cpu_func for helper functions which has an
explicit CPUState * passed as the first parameter. All the users of
run_on_cpu and async_run_on_cpu have had their helpers updated to use
CPUState where available.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
[Sergey Fedorov:
- eliminate more CPUState in user data;
- remove unnecessary user data passing;
- fix target-s390x/kvm.c and target-s390x/misc_helper.c]
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au> (ppc parts)
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> (s390 parts)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <1470158864-17651-3-git-send-email-alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
x86 vIOMMUs still lack of a complete IOMMU notifier mechanism.
Before that is achieved, let's open a door for vhost DMAR support,
which only requires cache invalidations (UNMAP operations).
Meanwhile, convert hw_error() to error_report() and exit(1), to make
the error messages cleaner and obvious (no CPU registers will be dumped).
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1474606948-14391-4-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The new interface can be used to replace the old notify_started() and
notify_stopped(). Meanwhile it provides explicit flags so that IOMMUs
can know what kind of notifications it is requested for.
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1474606948-14391-3-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add IVRS table for AMD IOMMU. Generate IVRS or DMAR
depending on emulated IOMMU.
Signed-off-by: David Kiarie <davidkiarie4@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add AMD IOMMU emulaton to Qemu in addition to Intel IOMMU.
The IOMMU does basic translation, error checking and has a
minimal IOTLB implementation. This IOMMU bypassed the need
for target aborts by responding with IOMMU_NONE access rights
and exempts the region 0xfee00000-0xfeefffff from translation
as it is the q35 interrupt region.
We advertise features that are not yet implemented to please
the Linux IOMMU driver.
IOTLB aims at implementing commands on real IOMMUs which is
essential for debugging and may not offer any performance
benefits
Signed-off-by: David Kiarie <davidkiarie4@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David Kiarie <davidkiarie4@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The parsing of KVM_SET_LAPIC's input depends on the current value of the
APIC base MSR---which indeed is stored in APICCommonState---but for historical
reasons APIC base is set through KVM_SET_SREGS together with cr8 (which is
really just the APIC TPR) and the actual "special CPU registers".
APIC base must now be set before the actual LAPIC registers, so do that
in kvm_apic_put. It will be set again to the same value with KVM_SET_SREGS,
but that's not a big issue.
This only happens since Linux 4.8, which checks for x2apic mode in
KVM_SET_LAPIC. However it's really a QEMU bug; until the recent
commit 78d6a05 ("x86/lapic: Load LAPIC state at post_load", 2016-09-13)
QEMU was indeed setting APIC base (via KVM_SET_SREGS) before the other
LAPIC registers.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
commit 78d6a05d2f
("x86/lapic: Load LAPIC state at post_load")
has some debugging leftovers.
Drop them.
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This patch fixes kvmvapic state change handler.
It clears vmsentry field to allow recreating it
at further vmstate loads.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20160915090127.6440.48793.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add -kernel_irqchip=split
./x86-run x86/eventinj.flat
qemu-system-x86_64 -enable-kvm -machine kernel_irqchip=split -cpu host
-device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc
none -serial stdio -device pci-testdev -kernel x86/eventinj.flat
enabling apic
paging enabled
cr0 = 80010011
cr3 = 7fff000
cr4 = 20
Sending vec 33 and 62 and mask one with TPR
irq1 running
irq1 running
After 33/62 TPR test
FAIL: TPR
irq0 running
irq0 running
Both irq1 and irq0 are executing twice.
kvm_entry: vcpu 0
kvm_exit: reason MSR_WRITE rip 0x401f33 info 0 0
kvm_apic: apic_write APIC_EOI = 0x0
kvm_eoi: apicid 0 vector 62
kvm_msr: msr_write 80b = 0x0
kvm_entry: vcpu 0
kvm_exit: reason PENDING_INTERRUPT rip 0x401f35 info 0 0
kvm_userspace_exit: reason KVM_EXIT_IRQ_WINDOW_OPEN (7)
kvm_inj_virq: irq 62
kvm_entry: vcpu 0
kvm_exit: reason IO_INSTRUCTION rip 0x4016ec info 3fd0008 0
From the trace we can see there is an interrupt window exit
after the first interrupt EOI(irq 62), and the same irq(62)
is injected duplicately after the interrupt window.
QEMU does KVM_INTERRUPT(62) ioctl after KVM exits with
KVM_EXIT_IRQ_WINDOW_OPEN, which QEMU requested while the
guest was printing. The printing calls
serial_update_irq() -> qemu_irq_lower() -> qemu_set_irq() ->
gsi_handler() -> qemu_set_irq() -> pic_irq_request() ->
apic_deliver_pic_intr() -> kvm_handle_interrupt()
kvm_handle_interrupt() does
interrupt_request |= CPU_INTERRUPT_HARD
which later calls cpu_get_pic_interrupt() in kvm_arch_pre_run(),
but that function uses stale information from APIC and injects
62 again. If we synchronized the APIC, then the test would #GP,
because there would be no injectable interrupt in LAPIC or PIC,
so pic_read_irq() would return 15, thinking it was spurious.
This patch fix it by don't touch LAPIC if LAPIC is in kernel.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Suggested-by: Radim Krčmář <rkrcmar@redhat.com>
Cc: qemu-stable@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Message-Id: <1473832464-3478-1-git-send-email-wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Load the LAPIC state during post_load (rather than when the CPU
starts).
This allows an interrupt to be delivered from the ioapic to
the lapic prior to cpu loading, in particular the RTC that starts
ticking as soon as we load it's state.
Fixes a case where Windows hangs after migration due to RTC interrupts
disappearing.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Display the slot number of mhp_pc_dimm_assigned_slot()
using "%d" without the "0x".
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This will used by the next patch.
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Further cleanup would need to call qemu_free_irq() at the appropriate
time, but for now this silences ASAN about direct leaks.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
The free_ranges array is used as a temporary pointer array, the segment
should still be freed, however, it shouldn't free the elements themself.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
qemu_irq is already a pointer, no need to have an extra pointer level.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1470224274-31522-5-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
a bunch of bugfixes and a couple of cleanups
making these easier and/or making debugging easier
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: cleanups, fixes
a bunch of bugfixes and a couple of cleanups
making these easier and/or making debugging easier
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Fri 29 Jul 2016 04:11:01 BST
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream: (41 commits)
mptsas: Fix a migration compatible issue
vhost: do not update last avail idx on get_vring_base() failure
vhost: add vhost_net_set_backend()
vhost-user: add error report in vhost_user_write()
tests: fix vhost-user-test leak
tests: plug some leaks in virtio-net-test
vhost-user: wait until backend init is completed
char: add and use tcp_chr_wait_connected
char: add chr_wait_connected callback
vhost: add assert() to check runtime behaviour
vhost-net: vhost_migration_done is vhost-user specific
Revert "vhost-net: do not crash if backend is not present"
vhost-user: add get_vhost_net() assertions
vhost-user: keep vhost_net after a disconnection
vhost-user: check vhost_user_{read,write}() return value
vhost-user: check qemu_chr_fe_set_msgfds() return value
vhost-user: call set_msgfds unconditionally
qemu-char: fix qemu_chr_fe_set_msgfds() crash when disconnected
vhost: use error_report() instead of fprintf(stderr,...)
vhost: add missing VHOST_OPS_DEBUG
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In build_crs(), the calculation and merging of the ranges already happens
in 64-bit, but the entry boundaries are silently truncated to 32-bit in the
call to aml_dword_memory(). Fix it by handling the 64-bit MMIO ranges separately.
This fixes 64-bit BARs behind PXBs.
Reported-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Instead of always passing both IO and MEM ranges when
computing CRS ranges, define a new CrsRangeSet structure
that include them both.
This is done before introducing a third type of range,
64-bit MEM, so it will be easier to pass them all around.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
PXBs do not support hotplug so they don't have a PCNT function.
Since the PXB's PCI root-bus is a child bus of bus 0, the
build_dsdt code will add a call to the corresponding PCNT function.
Fix this by skipping the PCNT call for the above case.
While at it skip also PCIe child buses.
Reported-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This reverts commit 4da7faaeb0.
Since commit:
pc: init CPUState->cpu_index with index in possible_cpus[]
cpu_index is stable regardless of the order cpus were created
and QEMU instance stays migratable always so limitation added
by 4da7faaeb could be safely removed.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
It will enshure that cpu_index for a given cpu stays the same
regardless of the order cpus has been created/deleted.
No compat code is needed as for initial cpus index in
possible_cpus[] matches cpu_index that's been auto-allocated
in cpu_exec_init().
Tha same applies for hotplug with cpu-add command if cpus are
added sequentially in increasing order as 'id' matches cpu_index.
If cpu-add had been used for creating out-of-order cpus,
that created unmigratable instance since it were not possible
to start target with the same cpu_index using old way
of migrating instance with hotplugged cpus:
* source QEMU with CLI (-smp 1,maxcpus=3 and cpu-add id=2)
following set of cpu_index is allocated [0, 1] with
apics set [0, 2] respectivelly
* target QEMU is started with CLI -smp 2,maxcpus=3
resulting in set of cpu_index [0, 1] but with
set of apics [0, 1] wich doesn't match source.
So we don't need compat code in this case as it's never worked
and newelly added device_add support would use stable cpu_index
set by machine to begin with, so it won't have above limitation
and source QEMU could be migrated to destination regardless
of the order cpus were created.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
- interrupt remapping for intel iommus
- a bunch of virtio cleanups
- fixes all over the place
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: new features, cleanups, fixes
- interrupt remapping for intel iommus
- a bunch of virtio cleanups
- fixes all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 21 Jul 2016 18:49:30 BST
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream: (57 commits)
intel_iommu: avoid unnamed fields
virtio: Update migration docs
virtio-gpu: Wrap in vmstate
virtio-gpu: Use migrate_add_blocker for virgl migration blocking
virtio-input: Wrap in vmstate
9pfs: Wrap in vmstate
virtio-serial: Wrap in vmstate
virtio-net: Wrap in vmstate
virtio-balloon: Wrap in vmstate
virtio-rng: Wrap in vmstate
virtio-blk: Wrap in vmstate
virtio-scsi: Wrap in vmstate
virtio: Migration helper function and macro
virtio-serial: Remove old migration version support
virtio-net: Remove old migration version support
virtio-scsi: Replace HandleOutput typedef
Revert "mirror: Workaround for unexpected iohandler events during completion"
virtio-scsi: Call virtio_add_queue_aio
virtio-blk: Call virtio_add_queue_aio
virtio: Introduce virtio_add_queue_aio
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Also avoid unnamed fields for portability.
Also, rename VTD_IRTE to VTD_IR_TableEntry for coding
style compliance.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When user specify "intremap=on" with "-M kernel-irqchip=on", throw error
and then quit.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Linux guests do not gracefully handle cases when the invalidation mask
they wanted is not supported, probably because real hardware always
allowed all.
We can just say that all 16 masks are supported, because both
ioapic_iec_notifier and kvm_update_msi_routes_all invalidate all caches.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
