The patch below does not apply to the 6.12-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@vger.kernel.org.

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-6.12.y git checkout FETCH_HEAD git cherry-pick -x f16873f42a06b620669d48a4b5c3f888cb3653a1 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2025062931-astride-stoneware-df77@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From f16873f42a06b620669d48a4b5c3f888cb3653a1 Mon Sep 17 00:00:00 2001 From: Matthew Auld matthew.auld@intel.com Date: Fri, 6 Jun 2025 11:45:48 +0100 Subject: [PATCH] drm/xe: move DPT l2 flush to a more sensible place MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

Only need the flush for DPT host updates here. Normal GGTT updates don't need special flush.

Fixes: 01570b446939 ("drm/xe/bmg: implement Wa_16023588340") Signed-off-by: Matthew Auld matthew.auld@intel.com Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: stable@vger.kernel.org # v6.12+ Reviewed-by: Ville Syrjälä ville.syrjala@linux.intel.com Reviewed-by: Lucas De Marchi lucas.demarchi@intel.com Link: https://lore.kernel.org/r/20250606104546.1996818-4-matthew.auld@intel.com Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com (cherry picked from commit 35db1da40c8cfd7511dc42f342a133601eb45449) Signed-off-by: Thomas Hellström thomas.hellstrom@linux.intel.com

diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c index d918ae1c8061..55259969480b 100644 --- a/drivers/gpu/drm/xe/display/xe_fb_pin.c +++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c @@ -164,6 +164,9 @@ static int __xe_pin_fb_vma_dpt(const struct intel_framebuffer *fb,

vma->dpt = dpt; vma->node = dpt->ggtt_node[tile0->id]; + + /* Ensure DPT writes are flushed */ + xe_device_l2_flush(xe); return 0; }

@@ -333,8 +336,6 @@ static struct i915_vma *__xe_pin_fb_vma(const struct intel_framebuffer *fb, if (ret) goto err_unpin;

- /* Ensure DPT writes are flushed */ - xe_device_l2_flush(xe); return vma;

err_unpin: