diff options
| author | Szymon Acedański <accek@invisiblethingslab.com> | 2026-09-16 19:30:30 +0200 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2026-09-21 15:59:19 +0200 |
| commit | 77f704158f099b952681f207478a22d5b8218edb (patch) | |
| tree | 5b519002fa41356d26d1e382b75d3277b284569f /tools/perf/scripts/python/stackcollapse.py | |
| parent | c2863648959489767f08892fd6e90577d2ea0b6a (diff) | |
| download | linux-77f704158f099b952681f207478a22d5b8218edb.tar.gz linux-77f704158f099b952681f207478a22d5b8218edb.zip | |
drm/xe: Limit sg segment size to PAGE_SIZE on Xen PV
Fix display corruption on Xen PV dom0, where DMA buffers are not
guaranteed machine-contiguous, in which case bounce buffering kicks
in, breaking xe's memory coherency assumptions.
Apply the same workaround i915 carries in i915_sg_segment_size() since
commit 78a07fe777c4 ("drm/i915: stop abusing swiotlb_max_segment").
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8382
Link: https://lore.kernel.org/xen-devel/aYtznP_tT6xNPwf-@mail-itl/
Link: https://lore.kernel.org/all/20221020110308.1582518-1-hch@lst.de/ # i915 counterpart
Cc: Christoph Hellwig <hch@lst.de>
Cc: Robert Beckett <bob.beckett@collabora.com>
Cc: stable@vger.kernel.org # v6.8+
Signed-off-by: Szymon Acedański <accek@invisiblethingslab.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20260916173030.3223833-1-accek@invisiblethingslab.com
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions