>>> On 07.04.16 at 13:57, <andrew.coop...@citrix.com> wrote:
> Use attributes to specify whether a feature is applicable to be exposed to:
> 1) All guests
> 2) HVM guests
> 3) HVM HAP guests
> and, via absence of an attribute, to no guests.
>
> There is no current need for other categories (e.g. PV-only features), and
> such categories should not be introduced if possible. These categories
> follow
> from the fact that, with increased hardware support, a guest gets more
> features to use.
>
> These settings are derived from the existing code in {pv,hvm}_cpuid(), and
> xc_cpuid_x86.c. One notable exception is EXTAPIC which was previously
> erroneously exposed to guests. PV guests don't get to use the APIC and the
> HVM APIC emulation doesn't support extended space.
>
> Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
> Reviewed-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com>
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