diff options
| author | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2026-06-10 09:03:14 +0300 |
|---|---|---|
| committer | Tvrtko Ursulin <tursulin@ursulin.net> | 2026-06-10 09:23:22 +0100 |
| commit | d21ad938398bca695a511307de38a65889e3b354 (patch) | |
| tree | 7a7842d24c2dc98a5822194a4a1f624b5b612cae /Documentation/arm64/git@git.tavy.me:linux.git | |
| parent | 2673cefa99ca918e7ac5b0388ff578a83656c896 (diff) | |
drm/i915/gem: Fix phys BO pread/pwrite with offset
sg_page() returns struct page pointer not (void *) so the scaling
of pread/pwrite is wrong for phys BO and wrong parts of BO would be
accessed if non-zero offset is used.
Last impacted platform with overlay or cursor planes using phys
mapping was Gen3/945G/Lakeport.
Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Fixes: c6790dc22312 ("drm/i915: Wean off drm_pci_alloc/drm_pci_free")
Cc: <stable@vger.kernel.org> # v4.5+
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://patch.msgid.link/20260610060314.26111-1-joonas.lahtinen@linux.intel.com
(cherry picked from commit 3e49a2f85070b2fb672c1e0fdba281a4ea3aebe6)
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Diffstat (limited to 'Documentation/arm64/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions