KVM: x86: Mask off reserved bit from #DB exception payload

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KVM defines the #DB payload as compatible with the 'pending debug
exceptions' field under VMX, not DR6. Mask off bit 12 when applying the
payload to DR6, as it is reserved on DR6 but not the 'pending debug
exceptions' field.

Fixes: f10c729ff9 ("kvm: vmx: Defer setting of DR6 until #DB delivery")
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Oliver Upton 2020-02-07 02:36:04 -08:00 • committed by Paolo Bonzini

parent 1f03b2bcd0

commit 307f1cfa26

1 changed files with 8 additions and 0 deletions

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arch/x86/kvm/x86.c

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