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KVM: nSVM: leave ASID aside in copy_vmcb_control_area

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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: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-05-20 08:02:17 -04:00
parent a3535be731
commit 6c0238c4a6
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/svm/nested.c
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@ -150,7 +150,7 @@ static void copy_vmcb_control_area(struct vmcb *dst_vmcb, struct vmcb *from_vmcb
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;