Messages in this thread | | | Date | Sat, 16 Apr 2022 03:42:45 +0000 | Subject | [PATCH 0/4] KVM: x86: APICv fixes | From | Sean Christopherson <> |
| |
Patch 1 is brown paper bag fix for a copy+paste bug (thankfully from this cycle).
Patch 2 fixes a nVMX + APICv bug where KVM essentially corrupts vmcs02 if an APICv update arrives while L2 is running. Found when testing a slight variation of patch 3.
Patch 3 fixes a race where an APICv update that occurs while a vCPU is being created will fail to notify that vCPU due it not yet being visible to the updater.
Patch 4 is a minor optimization/cleanup found by inspection when digging into everything else.
Sean Christopherson (4): KVM: x86: Tag APICv DISABLE inhibit, not ABSENT, if APICv is disabled KVM: nVMX: Defer APICv updates while L2 is active until L1 is active KVM: x86: Pend KVM_REQ_APICV_UPDATE during vCPU creation to fix a race KVM: x86: Skip KVM_GUESTDBG_BLOCKIRQ APICv update if APICv is disabled
arch/x86/kvm/vmx/nested.c | 5 +++++ arch/x86/kvm/vmx/vmx.c | 5 +++++ arch/x86/kvm/vmx/vmx.h | 1 + arch/x86/kvm/x86.c | 20 ++++++++++++++++++-- 4 files changed, 29 insertions(+), 2 deletions(-)
base-commit: 150866cd0ec871c765181d145aa0912628289c8a -- 2.36.0.rc0.470.gd361397f0d-goog
| |