Re: [PATCH v2 1/6] x86/pv: fix emulation of wb{,no}invd to flush all pCPU caches

[Jan Beulich <jbeulich@xxxxxxxx>]

On 16.05.2025 11:45, Roger Pau Monne wrote:
> The current emulation of wb{,no}invd is bogus for PV guests: it will only
> flush the current pCPU cache, without taking into account pCPUs where the
> vCPU had run previously.  Resort to flushing the cache on all host pCPUs to
> make it correct.
> 
> Fixes: 799fed0a7cc5 ("Priv-op emulation in Xen, for RDMSR/WRMSR/WBINVD")
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>