drm/i915/gtt: Reuse the read-only 64KiB scratch page and directories

Browse source

If we can prevent stray writes from landing in the scratch page, we can
reuse the same page and same scratch PT for all contexts without fear of
information leaks and side-channels.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181029182721.29568-2-chris@chris-wilson.co.uk

...

This commit is contained in:

Chris Wilson 2018-10-29 18:27:21 +00:00

parent daf3dc0f9b

commit b379e30629

1 changed files with 26 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

30

drivers/gpu/drm/i915/i915_gem_gtt.c

View file