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a4888486c5
linux/arch/x86/kvm
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Jan H. Schönherr a4888486c5 KVM: VMX: Do not fully reset PI descriptor on vCPU reset 
Parts of the posted interrupt descriptor configure host behavior,
such as the notification vector and destination. Overwriting them
with zero as done during vCPU reset breaks posted interrupts.
KVM (re-)writes these fields on certain occasions and belatedly fixes
the situation in many cases. However, if you have a guest configured
with "idle=poll", for example, the fields might stay zero forever.

Do not reset the full descriptor in vmx_vcpu_reset(). Instead,
reset only the outstanding notifications and leave everything
else untouched.

Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-11-02 18:27:11 +01:00
..
cpuid.c Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2017-09-08 14:40:43 +02:00
cpuid.h KVM: x86: fix clang build 2017-09-13 16:40:24 +02:00
debugfs.c kvm: x86: export TSC information to user-space 2016-09-16 16:57:48 +02:00
emulate.c x86/kvm: Move kvm_fastop_exception to .fixup section 2017-10-05 15:06:30 +02:00
hyperv.c KVM: X86: implement the logic for spinlock optimization 2017-08-08 10:57:43 +02:00
hyperv.h kvm: x86: hyperv: make VP_INDEX managed by userspace 2017-07-14 16:28:18 +02:00
i8254.c KVM: x86: take slots_lock in kvm_free_pit 2017-07-12 22:38:26 +02:00
i8254.h KVM: x86: Handle the kthread worker using the new API 2016-12-08 15:31:11 +01:00
i8259.c KVM: x86: simplify pic_ioport_read() 2017-04-12 20:17:15 +02:00
ioapic.c KVM: x86: rename kvm_vcpu_request_scan_ioapic() 2017-04-12 20:17:14 +02:00
ioapic.h KVM: x86: convert kvm_(set|get)_ioapic() into void 2017-04-12 20:17:14 +02:00
irq_comm.c KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING 2017-05-02 14:45:45 +02:00
irq.c KVM: x86: get rid of pic_irqchip() 2017-04-12 20:17:13 +02:00
irq.h KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING 2017-05-02 14:45:45 +02:00
Kconfig KVM: add X86_LOCAL_APIC dependency 2017-10-05 19:55:48 +02:00
kvm_cache_regs.h Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2017-09-08 14:40:43 +02:00
lapic.c kvm,lapic: Justify use of swait_active() 2017-09-15 16:57:11 +02:00
lapic.h KVM: hyperv: support HV_X64_MSR_TSC_FREQUENCY and HV_X64_MSR_APIC_FREQUENCY 2017-08-07 15:26:06 +02:00
Makefile KVM: x86: drop legacy device assignment 2017-04-07 16:49:00 +02:00
mmu_audit.c KVM: MMU: Add 5 level EPT & Shadow page table support. 2017-08-24 18:09:17 +02:00
mmu.c KVM: MMU: always terminate page walks at level 1 2017-10-10 15:31:28 +02:00
mmu.h Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2017-09-08 14:40:43 +02:00
mmutrace.h kvm: x86: mmu: allow A/D bits to be disabled in an mmu 2017-07-03 11:19:54 +02:00
mtrr.c KVM: x86: generalize guest_cpuid_has_ helpers 2017-08-07 16:11:50 +02:00
page_track.c mm: introduce kv[mz]alloc helpers 2017-05-08 17:15:12 -07:00
paging_tmpl.h KVM: MMU: always terminate page walks at level 1 2017-10-10 15:31:28 +02:00
pmu_amd.c perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2 2016-09-16 16:19:49 +02:00
pmu_intel.c KVM: x86/vPMU: fix undefined shift in intel_pmu_refresh() 2017-05-19 19:59:27 +02:00
pmu.c KVM: x86: never specify a sample period for virtualized in_tx_cp counters 2017-03-01 14:19:46 +01:00
pmu.h KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch 2015-06-23 14:12:14 +02:00
svm.c KVM: SVM: Add irqchip_split() checks before enabling AVIC 2017-09-14 17:05:13 +02:00
trace.h KVM: x86: Add return value to kvm_cpuid(). 2017-08-24 18:09:15 +02:00
tss.h
vmx.c KVM: VMX: Do not fully reset PI descriptor on vCPU reset 2017-11-02 18:27:11 +01:00
x86.c x86/fpu: Rename fpu__activate_curr() to fpu__initialize() 2017-09-26 09:43:44 +02:00
x86.h KVM: X86: Fix loss of exception which has not yet been injected 2017-08-24 18:09:19 +02:00