Messages in this thread Patch in this message | | | From | Avi Kivity <> | Subject | [PATCH 07/10] KVM: SVM: Fix FPU leak while emulating clts | Date | Sun, 2 Dec 2007 13:18:44 +0200 |
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From: Amit Shah <amit.shah@qumranet.com>
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 <amit.shah@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com> --- drivers/kvm/kvm_main.c | 5 +---- 1 files changed, 1 insertions(+), 4 deletions(-)
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index b514dfb..504e81d 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1163,10 +1163,7 @@ int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address) int emulate_clts(struct kvm_vcpu *vcpu) { - unsigned long cr0; - - cr0 = vcpu->cr0 & ~CR0_TS_MASK; - kvm_arch_ops->set_cr0(vcpu, cr0); + kvm_arch_ops->set_cr0(vcpu, vcpu->cr0 & ~X86_CR0_TS); return X86EMUL_CONTINUE; } -- 1.5.3
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