Messages in this thread | | | Date | Thu, 23 Jun 2022 13:17:30 +0200 | From | Andi Shyti <> | Subject | Re: [PATCH 5/6] drm/i915/gt: Serialize GRDOM access between multiple engine resets |
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Hi Mauro,
On Wed, Jun 15, 2022 at 04:27:39PM +0100, Mauro Carvalho Chehab wrote: > From: Chris Wilson <chris.p.wilson@intel.com> > > Don't allow two engines to be reset in parallel, as they would both > try to select a reset bit (and send requests to common registers) > and wait on that register, at the same time. Serialize control of > the reset requests/acks using the uncore->lock, which will also ensure > that no other GT state changes at the same time as the actual reset. > > Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") > > Reported-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> > Cc: Andi Shyti <andi.shyti@intel.com> > Cc: stable@vger.kernel.org > Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> > Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Thanks, Andi
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