From: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Date: Thu, 27 Feb 2014 06:08:31 +0000 (+0900)
Subject: KVM: x86: Break kvm_for_each_vcpu loop after finding the VP_INDEX
X-Git-Tag: firefly_0821_release~176^2~4172^2~39
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=684851a15744355f294ee3fee4ca2e9108382b47;p=firefly-linux-kernel-4.4.55.git

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>
---

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: