Re: [Xen-devel] [V3 PATCH 7/9] x86/hvm: pkeys, add pkeys support for guest_walk_tables

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 07/12/15 09:16, Huaitong Han wrote:
> +
> +    /* PKRU dom0 is always zero */
> +    if ( likely(!pte_pkeys) )
> +        return 0;

This is not an architectural restriction (as far as I can tell).  Xen
must never make assumptions about how a guest chooses to use a feature.

~Andrew

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