KVM: x86: Use wbinvd_on_cpu() instead of an open-coded equivalent

Use wbinvd_on_cpu() to target a single CPU instead of open-coding an
equivalent, and drop KVM's wbinvd_ipi() now that all users have switched
to x86 library versions.

No functional change intended.

Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20250522233733.3176144-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 5a2160f449e0ebe200e76353097d66ced989ac83..daf7f71aadf11c43d87f6ce786b49e7e067e0230 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4983,11 +4983,6 @@ out:
        return r;
 }
 
-static void wbinvd_ipi(void *garbage)
-{
-       wbinvd();
-}
-
 static bool need_emulate_wbinvd(struct kvm_vcpu *vcpu)
 {
        return kvm_arch_has_noncoherent_dma(vcpu->kvm);
@@ -5011,8 +5006,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
                if (kvm_x86_call(has_wbinvd_exit)())
                        cpumask_set_cpu(cpu, vcpu->arch.wbinvd_dirty_mask);
                else if (vcpu->cpu != -1 && vcpu->cpu != cpu)
-                       smp_call_function_single(vcpu->cpu,
-                                       wbinvd_ipi, NULL, 1);
+                       wbinvd_on_cpu(vcpu->cpu);
        }
 
        kvm_x86_call(vcpu_load)(vcpu, cpu);