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