Patch "drm/xe: Fix exporting xe buffers multiple times" has been added to the 6.12-stable tree
gregkh at linuxfoundation.org
gregkh at linuxfoundation.org
Mon Mar 24 16:13:23 UTC 2025
This is a note to let you know that I've just added the patch titled
drm/xe: Fix exporting xe buffers multiple times
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-xe-fix-exporting-xe-buffers-multiple-times.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.
>From 50af7cab7520e46680cf4633bba6801443b75856 Mon Sep 17 00:00:00 2001
From: Tomasz Rusinowicz <tomasz.rusinowicz at intel.com>
Date: Tue, 18 Feb 2025 11:03:53 +0100
Subject: drm/xe: Fix exporting xe buffers multiple times
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From: Tomasz Rusinowicz <tomasz.rusinowicz at intel.com>
commit 50af7cab7520e46680cf4633bba6801443b75856 upstream.
The `struct ttm_resource->placement` contains TTM_PL_FLAG_* flags, but
it was incorrectly tested for XE_PL_* flags.
This caused xe_dma_buf_pin() to always fail when invoked for
the second time. Fix this by checking the `mem_type` field instead.
Fixes: 7764222d54b7 ("drm/xe: Disallow pinning dma-bufs in VRAM")
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Cc: "Thomas Hellström" <thomas.hellstrom at linux.intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Cc: Matthew Auld <matthew.auld at intel.com>
Cc: Nirmoy Das <nirmoy.das at intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
Cc: intel-xe at lists.freedesktop.org
Cc: <stable at vger.kernel.org> # v6.8+
Signed-off-by: Tomasz Rusinowicz <tomasz.rusinowicz at intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz at linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250218100353.2137964-1-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
(cherry picked from commit b96dabdba9b95f71ded50a1c094ee244408b2a8e)
Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_bo.h | 2 --
drivers/gpu/drm/xe/xe_dma_buf.c | 2 +-
2 files changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -314,7 +314,6 @@ static inline unsigned int xe_sg_segment
#define i915_gem_object_flush_if_display(obj) ((void)(obj))
-#if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST)
/**
* xe_bo_is_mem_type - Whether the bo currently resides in the given
* TTM memory type
@@ -329,4 +328,3 @@ static inline bool xe_bo_is_mem_type(str
return bo->ttm.resource->mem_type == mem_type;
}
#endif
-#endif
--- a/drivers/gpu/drm/xe/xe_dma_buf.c
+++ b/drivers/gpu/drm/xe/xe_dma_buf.c
@@ -58,7 +58,7 @@ static int xe_dma_buf_pin(struct dma_buf
* 1) Avoid pinning in a placement not accessible to some importers.
* 2) Pinning in VRAM requires PIN accounting which is a to-do.
*/
- if (xe_bo_is_pinned(bo) && bo->ttm.resource->placement != XE_PL_TT) {
+ if (xe_bo_is_pinned(bo) && !xe_bo_is_mem_type(bo, XE_PL_TT)) {
drm_dbg(&xe->drm, "Can't migrate pinned bo for dma-buf pin.\n");
return -EINVAL;
}
Patches currently in stable-queue which might be from tomasz.rusinowicz at intel.com are
queue-6.12/drm-xe-fix-exporting-xe-buffers-multiple-times.patch
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