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| author | Jon Bloomfield <jon.bloomfield@intel.com> | 2018-07-12 19:53:10 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-13 16:08:09 +0100 |
| commit | 25dda4dabeeb12af5209b0183c788ef2a88dabbe (patch) | |
| tree | c1c500b8fa0ba024eda86b09ce42931a077695e6 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 90c3e2198777aaa355b6994a31a79c636c8d4306 (diff) | |
drm/i915/gtt: Add read only pages to gen8_pte_encode
We can set a bit inside the ppGTT PTE to indicate a page is read-only;
writes from the GPU will be discarded. We can use this to protect pages
and in particular support read-only userptr mappings (necessary for
importing PROT_READ vma).
Signed-off-by: Jon Bloomfield <jon.bloomfield@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180712185315.3288-1-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions