Re: [Xen-devel] [PATCH 2/2] x86/tlb: use Xen L0 assisted TLB flush when available

[Jan Beulich <jbeulich@xxxxxxxx>]

On 24.12.2019 14:26, Roger Pau Monne wrote:
> @@ -235,6 +236,11 @@ void flush_area_mask(const cpumask_t *mask, const void 
> *va, unsigned int flags)
>      {
>          bool cpus_locked = false;
>  
> +        if ( xen_guest &&
> +             !(flags & ~(FLUSH_TLB | FLUSH_TLB_GLOBAL | FLUSH_VA_VALID)) &&
> +             !xg_flush_tlbs() )
> +            return;

With the abstraction introduced recently by Wei I think this wants
to be a per-hypervisor hook, which would also get the linear address
passed, and which would then (rather than here) decide whether it
wants to also handle a single page flush a different way.

Jan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel