Hi Mauro,
On Thu, Jul 14, 2022 at 01:06:09PM +0100, Mauro Carvalho Chehab wrote:
> From: Chris Wilson
>
> Don't flush TLBs when the buffer is only used in the GGTT under full
> control of the kernel, as there's no risk of concurrent access
> and stale access from prefetch.
>
> We only need to
On Mon, 18 Jul 2022 14:39:17 +0100
Tvrtko Ursulin wrote:
> On 14/07/2022 13:06, Mauro Carvalho Chehab wrote:
> > From: Chris Wilson
> >
> > Don't flush TLBs when the buffer is only used in the GGTT under full
> > control of the kernel, as there's no risk of concurrent access
> > and stale
On 14/07/2022 13:06, Mauro Carvalho Chehab wrote:
From: Chris Wilson
Don't flush TLBs when the buffer is only used in the GGTT under full
control of the kernel, as there's no risk of concurrent access
and stale access from prefetch.
We only need to invalidate the TLB if they are accessible
From: Chris Wilson
Don't flush TLBs when the buffer is only used in the GGTT under full
control of the kernel, as there's no risk of concurrent access
and stale access from prefetch.
We only need to invalidate the TLB if they are accessible by the user.
That helps to reduce the performance
