15 Apr
2020
15 Apr
'20
11:24 a.m.
Hi Chris,
On Wed, Apr 15, 2020 at 08:50:18AM +0100, Chris Wilson wrote:
If we use a non-forcewaked write to PMINTRMSK, it does not take effect until much later, if at all, causing a loss of RPS interrupts and no GPU reclocking, leaving the GPU running at the wrong frequency for long periods of time.
Reported-by: Francisco Jerez currojerez@riseup.net Suggested-by: Francisco Jerez currojerez@riseup.net Fixes: 35cc7f32c298 ("drm/i915/gt: Use non-forcewake writes for RPS") Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: Francisco Jerez currojerez@riseup.net Cc: Mika Kuoppala mika.kuoppala@linux.intel.com Cc: Andi Shyti andi.shyti@intel.com Cc: stable@vger.kernel.org # v5.6+
Reviewed-by: Andi Shyti andi.shyti@intel.com
Andi