From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: [patch 23/60] KVM: SVM: Fix FPU leak while emulating clts Date: Wed, 12 Dec 2007 22:52:06 -0800 Message-ID: <20071213065206.GX6867@kroah.com> References: <20071213064518.328162328@mini.kroah.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Justin Forbes , Zwane Mwaikambo , Theodore Ts'o , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , Chuck Ebbert , Domenico Andreoli , torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, kvm-devel@lists.sourceforge.net, Amit Shah , Avi Kivity To: linux-kernel@vger.kernel.org, stable@kernel.org Return-path: Content-Disposition: inline; filename="kvm-svm-fix-fpu-leak-while-emulating-clts.patch" In-Reply-To: <20071213065039.GA6867@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org 2.6.23-stable review patch. If anyone has any objections, please let us know. ------------------ From: Amit Shah patch 404fb881b82cf0cf6981832f8d31a7484e4dee81 in mainline. The clts code didn't use set_cr0 properly, so our lazy FPU processing wasn't being done by the clts instruction at all. (this isn't called on Intel as the hardware does the decode for us) Signed-off-by: Amit Shah Signed-off-by: Avi Kivity Signed-off-by: Greg Kroah-Hartman --- drivers/kvm/kvm_main.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1163,10 +1163,7 @@ int emulate_invlpg(struct kvm_vcpu *vcpu int emulate_clts(struct kvm_vcpu *vcpu) { - unsigned long cr0;