KVM: x86: Break kvm_for_each_vcpu loop after finding the VP_INDEX

No need to scan the entire VCPU array.

Signed-off-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4cca45853dfe..773eba799c45 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2328,9 +2328,12 @@ static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
         case HV_X64_MSR_VP_INDEX: {
                 int r;
                 struct kvm_vcpu *v;
-                kvm_for_each_vcpu(r, v, vcpu->kvm)
-                        if (v == vcpu)
+                kvm_for_each_vcpu(r, v, vcpu->kvm) {
+                        if (v == vcpu) {
                                 data = r;
+                                break;
+                        }
+                }
                 break;
         }
         case HV_X64_MSR_EOI: