[Intel-gfx] [PATCH 1/6] drm/i915/gem: Almagamate clflushes on suspend

Matthew Auld matthew.william.auld at gmail.com
Tue Jan 19 17:26:11 UTC 2021

On Tue, 19 Jan 2021 at 14:49, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> When flushing objects larger than the CPU cache it is preferrable to use
> a single wbinvd() rather than overlapping clflush(). At runtime, we
> avoid wbinvd() due to its system-wide latencies, but during
> singlethreaded suspend, no one will observe the imposed latency and we
> can opt for the faster wbinvd to clear all objects in a single hit.
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld at intel.com>

More information about the Intel-gfx mailing list