Defer updating SVI (i.e. the VMCS's highest ISR cache) when L2 is active, but L1 has not enabled virtual interrupt delivery for L2, as an EOI that is emulated _by KVM_ in such a case acts on L1's ISR, i.e. vmcs01 needs to reflect the updated ISR when L1 is next run. Note, L1's ISR is also effectively L2's ISR in such a setup, but because virtual interrupt deliver is disable for L2, there's no need to update SVI in vmcs02, because it will never be used. Chao Gao (1): KVM: nVMX: Defer SVI update to vmcs01 on EOI when L2 is active w/o VID Sean Christopherson (1): KVM: x86: Plumb in the vCPU to kvm_x86_ops.hwapic_isr_update() arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/lapic.c | 22 ++++++++++++++++------ arch/x86/kvm/lapic.h | 1 + arch/x86/kvm/vmx/nested.c | 5 +++++ arch/x86/kvm/vmx/vmx.c | 19 ++++++++++++++++++- arch/x86/kvm/vmx/vmx.h | 1 + arch/x86/kvm/vmx/x86_ops.h | 2 +- 7 files changed, 43 insertions(+), 9 deletions(-) base-commit: e466901b947d529f7b091a3b00b19d2bdee206ee -- 2.47.0.163.g1226f6d8fa-goog
