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Sean Christopherson 4ab5d1b709 KVM: x86: Ensure deadline timer has truly expired before posting its IRQ 
commit beda430177f56656e7980dcce93456ffaa35676b upstream.

When posting a deadline timer interrupt, open code the checks guarding
__kvm_wait_lapic_expire() in order to skip the lapic_timer_int_injected()
check in kvm_wait_lapic_expire().  The injection check will always fail
since the interrupt has not yet be injected.  Moving the call after
injection would also be wrong as that wouldn't actually delay delivery
of the IRQ if it is indeed sent via posted interrupt.

Fixes: 010fd37fddf6 ("KVM: LAPIC: Reduce world switch latency caused by timer_advance_ns")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210305021808.3769732-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-17 17:06:36 +01:00
..
mmu
KVM: x86/mmu: Expand collapsible SPTE zap for TDP MMU to ZONE_DEVICE and HugeTLB pages
2021-03-04 11:38:20 +01:00
svm
KVM: SVM: Clear the CR4 register on reset
2021-03-11 14:17:29 +01:00
vmx
KVM: x86: Allow guests to see MSR_IA32_TSX_CTRL even if tsx=off
2021-02-10 09:29:19 +01:00
cpuid.c
KVM: x86: fix CPUID entries returned by KVM_GET_CPUID2 ioctl
2021-02-10 09:29:20 +01:00
cpuid.h
KVM: x86: reinstate vendor-agnostic check on SPEC_CTRL cpuid bits
2020-12-30 11:54:14 +01:00
debugfs.c
KVM: let kvm_destroy_vm_debugfs clean up vCPU debugfs directories
2020-06-04 11:00:54 -04:00
emulate.c
KVM: x86: Restore all 64 bits of DR6 and DR7 during RSM on x86-64
2021-03-04 11:37:48 +01:00
hyperv.c
ARM:
2020-10-23 11:17:56 -07:00
hyperv.h
x86/kvm/hyper-v: Add support for synthetic debugger interface
2020-06-01 04:26:11 -04:00
i8254.c
kvm: i8254: remove redundant assignment to pointer s
2020-06-11 12:35:18 -04:00
i8254.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
i8259.c
KVM: x86: Refactor picdev_write() to prevent Spectre-v1/L1TF attacks
2020-01-27 19:59:37 +01:00
ioapic.c
KVM: ioapic: break infinite recursion on lazy EOI
2020-10-24 04:42:06 -04:00
ioapic.h
kvm/x86: Remove redundant function implementations
2020-05-27 13:11:10 -04:00
irq_comm.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
irq.c
KVM: x86: Fix split-irqchip vs interrupt injection window request
2020-11-27 09:27:28 -05:00
irq.h
kvm/x86: Remove redundant function implementations
2020-05-27 13:11:10 -04:00
Kconfig
x86/kvm: hide KVM options from menuconfig when KVM is not compiled
2020-10-21 17:36:30 -04:00
kvm_cache_regs.h
KVM: x86: Let the guest own CR4.FSGSBASE
2020-10-21 17:48:50 -04:00
kvm_emulate.h
ARM:
2020-04-02 15:13:15 -07:00
lapic.c
KVM: x86: Ensure deadline timer has truly expired before posting its IRQ
2021-03-17 17:06:36 +01:00
lapic.h
KVM: nVMX: Morph notification vector IRQ on nested VM-Enter to pending PI
2020-09-28 07:57:22 -04:00
Makefile
kvm: x86/mmu: Init / Uninit the TDP MMU
2020-10-21 18:17:00 -04:00
mmu.h
KVM: x86: fix shift out of bounds reported by UBSAN
2021-01-12 20:18:26 +01:00
mtrr.c
KVM: x86: Protect MSR-based index computations in fixed_msr_to_seg_unit() from Spectre-v1/L1TF attacks
2020-01-27 19:59:39 +01:00
pmu.c
KVM/x86: pmu: Fix #GP condition check for RDPMC emulation
2020-07-09 07:08:37 -04:00
pmu.h
kvm: x86: limit the maximum number of vPMU fixed counters to 3
2020-07-08 16:21:59 -04:00
trace.h
KVM: x86: Use common definition for kvm_nested_vmexit tracepoint
2020-09-28 07:57:52 -04:00
tss.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
x86.c
KVM: x86: cleanup CR3 reserved bits checks
2021-02-17 11:02:24 +01:00
x86.h
KVM: x86: Supplement __cr4_reserved_bits() with X86_FEATURE_PCID check
2021-03-11 14:17:26 +01:00