The patch below does not apply to the 6.10-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-6.10.y git checkout FETCH_HEAD git cherry-pick -x ee06c09ded3c2f722be4e240ed06287e23596bda # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024100809-goes-diagnosis-d07c@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^..

Possible dependencies:

ee06c09ded3c ("drm/xe/vram: fix ccs offset calculation") 638d1c79cbf1 ("drm/xe: Promote VRAM initialization function to own file") 8c52ca22b15b ("drm/xe: Drop xe_ prefix from static functions in xe_mmio.c") 2d8865b27724 ("drm/xe: Move BAR definitions to dedicated file") 2adfc4e022f3 ("drm/xe: Move XEHP_MTCFG_ADDR register definition to xe_regs.h") c7117419784f ("drm/xe: reset mmio mappings with devm") a0b834c8957a ("drm/xe/mmio: move mmio_fini over to devm") f7e20cfb59c9 ("drm/xe: Cleanup xe_mmio.h") 93dd6ad89c7d ("drm/xe: Don't rely on xe_force_wake.h to be included elsewhere")

thanks,

greg k-h

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

From ee06c09ded3c2f722be4e240ed06287e23596bda Mon Sep 17 00:00:00 2001 From: Matthew Auld matthew.auld@intel.com Date: Mon, 16 Sep 2024 09:49:12 +0100 Subject: [PATCH] drm/xe/vram: fix ccs offset calculation

Spec says SW is expected to round up to the nearest 128K, if not already aligned for the CC unit view of CCS. We are seeing the assert sometimes pop on BMG to tell us that there is a hole between GSM and CCS, as well as popping other asserts with having a vram size with strange alignment, which is likely caused by misaligned offset here.

v2 (Shuicheng): - Do the round_up() on final SW address.

BSpec: 68023 Fixes: b5c2ca0372dc ("drm/xe/xe2hpg: Determine flat ccs offset for vram") Signed-off-by: Matthew Auld matthew.auld@intel.com Cc: Himal Prasad Ghimiray himal.prasad.ghimiray@intel.com Cc: Akshata Jahagirdar akshata.jahagirdar@intel.com Cc: Lucas De Marchi lucas.demarchi@intel.com Cc: Shuicheng Lin shuicheng.lin@intel.com Cc: Matt Roper matthew.d.roper@intel.com Cc: stable@vger.kernel.org # v6.10+ Reviewed-by: Himal Prasad Ghimiray himal.prasad.ghimiray@intel.com Tested-by: Shuicheng Lin shuicheng.lin@intel.com Reviewed-by: Lucas De Marchi lucas.demarchi@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20240916084911.13119-2-matthew... Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com (cherry picked from commit 37173392741c425191b959acb3adf70c9a4610c0) Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com

diff --git a/drivers/gpu/drm/xe/xe_vram.c b/drivers/gpu/drm/xe/xe_vram.c index 5bcd59190353..80ba2fc78837 100644 --- a/drivers/gpu/drm/xe/xe_vram.c +++ b/drivers/gpu/drm/xe/xe_vram.c @@ -182,6 +182,7 @@ static inline u64 get_flat_ccs_offset(struct xe_gt *gt, u64 tile_size) offset = offset_hi << 32; /* HW view bits 39:32 */ offset |= offset_lo << 6; /* HW view bits 31:6 */ offset *= num_enabled; /* convert to SW view */ + offset = round_up(offset, SZ_128K); /* SW must round up to nearest 128K */

/* We don't expect any holes */ xe_assert_msg(xe, offset == (xe_mmio_read64_2x32(gt, GSMBASE) - ccs_size),