diff options
| author | Sean Christopherson <seanjc@google.com> | 2022-01-28 00:51:51 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-02-10 13:47:18 -0500 |
| commit | a0941a64a97d50e1ae4b628c65d5f7847ef58398 (patch) | |
| tree | e0fde25b393985e7485a27a40eff9122cc6c5cd0 | |
| parent | ef2d488c652150df3c580a53f9e5d6f307e9b7e4 (diff) | |
KVM: x86: Use static_call() for .vcpu_deliver_sipi_vector()
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@google.com>
Message-Id: <20220128005208.4008533-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/include/asm/kvm-x86-ops.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/lapic.c | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h index 4fb9b7d2dcf3..955f4d8269dd 100644 --- a/arch/x86/include/asm/kvm-x86-ops.h +++ b/arch/x86/include/asm/kvm-x86-ops.h @@ -122,6 +122,7 @@ KVM_X86_OP_NULL(enable_direct_tlbflush) KVM_X86_OP_NULL(migrate_timers) KVM_X86_OP(msr_filter_changed) KVM_X86_OP_NULL(complete_emulated_msr) +KVM_X86_OP(vcpu_deliver_sipi_vector) #undef KVM_X86_OP #undef KVM_X86_OP_NULL diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 9322e6340a74..5fe507242960 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -2933,7 +2933,7 @@ 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; } } |