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authorAmit Shah <amit.shah@qumranet.com>2008-02-28 16:06:15 +0530
committerAvi Kivity <avi@redhat.com>2009-03-24 11:03:13 +0200
commit41d6af119206e98764b4ae6d264d63acefcf851e (patch)
treea98a6646cce5bba013b681722208a1cf8b784ef0 /arch/x86/kvm
parent401d10dee083bda281f2fdcdf654080313ba30ec (diff)
KVM: is_long_mode() should check for EFER.LMA
is_long_mode currently checks the LongModeEnable bit in EFER instead of the LongModeActive bit. This is wrong, but we survived this till now since it wasn't triggered. This breaks guests that go from long mode to compatibility mode. This is noticed on a solaris guest and fixes bug #1842160 Signed-off-by: Amit Shah <amit.shah@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/mmu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index 258e5d56298..eaab2145f62 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -54,7 +54,7 @@ static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
static inline int is_long_mode(struct kvm_vcpu *vcpu)
{
#ifdef CONFIG_X86_64
- return vcpu->arch.shadow_efer & EFER_LME;
+ return vcpu->arch.shadow_efer & EFER_LMA;
#else
return 0;
#endif