On 10/11/2015 10:28, Han, Huaitong wrote:
> > pkru = is_long_mode(vcpu) ? read_pkru() : 0;
> > if (unlikely(pkru) && (pfec & PFERR_PK_MASK)) {
> > ... from above ... */
> >
> > /* Flip PFERR_PK_MASK if pkru_bits is non-zero */
> > pfec ^= -pkru_bits & PFERR_PK_MASK;
>
> If pkru_bits is zero, it means dynamically conditions is not met for
> protection-key violations, so pfec on PK bit should be flipped. So I
> guess it should be:
> pfec ^= pkru_bits ? 0 : PFERR_PK_MASK;
Right.
Paolo
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