The patch below does not apply to the 6.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable@xxxxxxxxxxxxxxx>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.4.y git checkout FETCH_HEAD git cherry-pick -x 78a6ccd65fa3a7cc697810db079cc4b84dff03d5 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable@xxxxxxxxxxxxxxx>' --in-reply-to '2023080746-bounding-truck-a16d@gregkh' --subject-prefix 'PATCH 6.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 78a6ccd65fa3a7cc697810db079cc4b84dff03d5 Mon Sep 17 00:00:00 2001 From: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx> Date: Tue, 25 Jul 2023 02:19:46 +0200 Subject: [PATCH] drm/i915/gt: Ensure memory quiesced before invalidation All memory traffic must be quiesced before requesting an aux invalidation on platforms that use Aux CCS. Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all engines") Requires: a2a4aa0eef3b ("drm/i915: Add the gen12_needs_ccs_aux_inv helper") Signed-off-by: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx> Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # v5.8+ Reviewed-by: Nirmoy Das <nirmoy.das@xxxxxxxxx> Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-4-andi.shyti@xxxxxxxxxxxxxxx (cherry picked from commit ad8ebf12217e451cd19804b1c3e97ad56491c74a) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c index 460c9225a50f..6210b38a2d38 100644 --- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c @@ -214,7 +214,11 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode) { struct intel_engine_cs *engine = rq->engine; - if (mode & EMIT_FLUSH) { + /* + * On Aux CCS platforms the invalidation of the Aux + * table requires quiescing memory traffic beforehand + */ + if (mode & EMIT_FLUSH || gen12_needs_ccs_aux_inv(engine)) { u32 flags = 0; int err; u32 *cs;
