KVM: SVM: Unload guest fpu on vcpu_put()
authorAvi Kivity <avi@qumranet.com>
Tue, 27 Nov 2007 13:33:10 +0000 (15:33 +0200)
committerAvi Kivity <avi@qumranet.com>
Tue, 27 Nov 2007 13:33:10 +0000 (15:33 +0200)
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>
drivers/kvm/svm.c

index 7a6eead63a6bc14537d36fb09756ba5001bc8634..4e04e49a2f1c35f626fa24d3d5d3f1ea5d115869 100644 (file)
@@ -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)