KVM: x86: VMX: __kvm_apic_update_irr must update the IRR atomically

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If APICv is inhibited, then IPIs from peer vCPUs are done by
atomically setting bits in IRR.

This means, that when __kvm_apic_update_irr copies PIR to IRR,
it has to modify IRR atomically as well.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20230726135945.260841-2-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Maxim Levitsky 2023-07-26 16:59:43 +03:00 • committed by Paolo Bonzini

parent 6eaae19807

commit 514946d143

1 changed files with 13 additions and 7 deletions

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arch/x86/kvm/lapic.c

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