KVM: x86: Remove hwapic_irr_update() from kvm_x86_ops

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Remove the redundant .hwapic_irr_update() ops.

If a vCPU has APICv enabled, KVM updates its RVI before VM-enter to L1
in vmx_sync_pir_to_irr(). This guarantees RVI is up-to-date and aligned
with the vIRR in the virtual APIC. So, no need to update RVI every time
the vIRR changes.

Note that KVM never updates vmcs02 RVI in .hwapic_irr_update() or
vmx_sync_pir_to_irr(). So, removing .hwapic_irr_update() has no
impact to the nested case.

Signed-off-by: Chao Gao <chao.gao@intel.com>
Link: https://lore.kernel.org/r/20241111085947.432645-1-chao.gao@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Chao Gao 2024-11-11 16:59:46 +08:00 • committed by Sean Christopherson

parent 3d91521e57

commit ca0245d131

6 changed files with 0 additions and 23 deletions

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arch/x86/include/asm/kvm-x86-ops.h

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arch/x86/include/asm/kvm_host.h

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arch/x86/kvm/lapic.c

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arch/x86/kvm/vmx/main.c

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arch/x86/kvm/vmx/vmx.c

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arch/x86/kvm/vmx/x86_ops.h

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