[PATCH 4.4 035/101] KVM: nSVM: leave ASID aside in copy_vmcb_control_area

[Greg Kroah-Hartman]

From: Paolo Bonzini <pbonz...@redhat.com>

commit 6c0238c4a62b3a0b1201aeb7e33a4636d552a436 upstream.

Restoring the ASID from the hsave area on VMEXIT is wrong, because its
value depends on the handling of TLB flushes.  Just skipping the field in
copy_vmcb_control_area will do.

Cc: sta...@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 arch/x86/kvm/svm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2250,7 +2250,7 @@ static inline void copy_vmcb_control_are
        dst->iopm_base_pa         = from->iopm_base_pa;
        dst->msrpm_base_pa        = from->msrpm_base_pa;
        dst->tsc_offset           = from->tsc_offset;
-       dst->asid                 = from->asid;
+       /* asid not copied, it is handled manually for svm->vmcb.  */
        dst->tlb_ctl              = from->tlb_ctl;
        dst->int_ctl              = from->int_ctl;
        dst->int_vector           = from->int_vector;