Re: [PATCH] xen-detect: make CPUID fallback CPUID-faulting aware

[Wei Liu <wl@xxxxxxx>]

On Wed, Oct 14, 2020 at 05:23:23PM +0200, Jan Beulich wrote:
> Relying on presence / absence of hypervisor leaves in raw / escaped
> CPUID output cannot be used to tell apart PV and HVM on CPUID faulting
> capable hardware. Utilize a PV-only feature flag to avoid false positive
> HVM detection.
> 
> While at it also short circuit the main detection loop: For PV, only
> the base group of leaves can possibly hold hypervisor information.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Acked-by: Wei Liu <wl@xxxxxxx>