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

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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>
This commit is contained in:
Sean Christopherson
2025-05-22 16:37:29 -07:00
parent 4fdc3431e0
commit 55aed8c2db
1 changed files with 1 additions and 7 deletions
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8
arch/x86/kvm/x86.c
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@@ -4983,11 +4983,6 @@ long kvm_arch_dev_ioctl(struct file *filp,
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);