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Date: Wed, 05 Jan 2011 16:23:57 -0800 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Sheng Yang <sheng@...ux.intel.com>, Avi Kivity <avi@...hat.com> Subject: [138/152] KVM: Fix OSXSAVE after migration 2.6.36-stable review patch. If anyone has any objections, please let us know. ------------------ From: Sheng Yang <sheng@...ux.intel.com> commit 3ea3aa8cf67d3bbe00a19b6a4013d19efa7d0f41 upstream. CPUID's OSXSAVE is a mirror of CR4.OSXSAVE bit. We need to update the CPUID after migration. KVM-Stable-Tag. Signed-off-by: Sheng Yang <sheng@...ux.intel.com> Signed-off-by: Avi Kivity <avi@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- arch/x86/kvm/x86.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5112,6 +5112,8 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4; kvm_x86_ops->set_cr4(vcpu, sregs->cr4); + if (sregs->cr4 & X86_CR4_OSXSAVE) + update_cpuid(vcpu); if (!is_long_mode(vcpu) && is_pae(vcpu)) { load_pdptrs(vcpu, vcpu->arch.cr3); mmu_reset_needed = 1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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