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>

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>
Avi Kivity
1 parent 00b2ef475d
Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff
drivers/kvm/svm.c
@@ -663,6 +663,7 @@
 		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)
...	...	@@ -663,6 +663,7 @@
663	663	wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
664	664
665	665	rdtscll(vcpu->host_tsc);
	666	+ kvm_put_guest_fpu(vcpu);
666	667	}
667	668
668	669	static void svm_vcpu_decache(struct kvm_vcpu *vcpu)