Define and use a static_call() for kvm_x86_ops.vcpu_deliver_sipi_vector(), mostly so that the op is defined in kvm-x86-ops.h. This will allow using KVM_X86_OP in vendor code to wire up the implementation. Any performance gains eeked out by using static_call() is a happy bonus and not the primary motiviation. Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx> --- arch/x86/include/asm/kvm-x86-ops.h | 1 + arch/x86/kvm/lapic.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index a87632641a13..eb93aa439d61 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -117,5 +117,6 @@ KVM_X86_OP(enable_direct_tlbflush) KVM_X86_OP(migrate_timers) KVM_X86_OP(msr_filter_changed) KVM_X86_OP(complete_emulated_msr) +KVM_X86_OP(vcpu_deliver_sipi_vector) #undef KVM_X86_OP diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index d7e6fde82d25..dc4bc9eea81c 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -2928,7 +2928,7 @@ int kvm_apic_accept_events(struct kvm_vcpu *vcpu) /* evaluate pending_events before reading the vector */ smp_rmb(); sipi_vector = apic->sipi_vector; - kvm_x86_ops.vcpu_deliver_sipi_vector(vcpu, sipi_vector); + static_call(kvm_x86_vcpu_deliver_sipi_vector)(vcpu, sipi_vector); vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; } } -- 2.35.0.rc0.227.g00780c9af4-goog
