This is a note to let you know that I've just added the patch titled
KVM: Fix OSXSAVE after migration
to the 2.6.36-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-fix-osxsave-after-migration.patch
and it can be found in the queue-2.6.36 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 3ea3aa8cf67d3bbe00a19b6a4013d19efa7d0f41 Mon Sep 17 00:00:00 2001
From: Sheng Yang <[email protected]>
Date: Wed, 8 Dec 2010 10:49:43 +0800
Subject: KVM: Fix OSXSAVE after migration
From: Sheng Yang <[email protected]>
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 <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
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;
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.36/kvm-fix-osxsave-after-migration.patch
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