From: Avi Kivity <avi@qumranet.com>
Date: Tue, 27 Nov 2007 13:33:10 +0000 (+0200)
Subject: KVM: SVM: Unload guest fpu on vcpu_put()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d379a7c069179a98616c9cac6bb2a06a500de49;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

KVM: SVM: Unload guest fpu on vcpu_put()

Not unloading the guest fpu can cause fpu leaks from guest to guest (or host
to guest).

Signed-off-by: Avi Kivity <avi@qumranet.com>
---

diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 7a6eead63a6b..4e04e49a2f1c 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -663,6 +663,7 @@ static void svm_vcpu_put(struct kvm_vcpu *vcpu)
 		wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
 
 	rdtscll(vcpu->host_tsc);
+	kvm_put_guest_fpu(vcpu);
 }
 
 static void svm_vcpu_decache(struct kvm_vcpu *vcpu)