diff options
| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-11-07 18:06:01 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-11-07 21:23:52 +0000 |
| commit | 1d1d0af67939c0a99dbf352628db0016924f8613 (patch) | |
| tree | 73f4de8aa6fb12078ba5a7bf2658e62b29b863be /kernel/sysctl_binary.c | |
| parent | drm/i915/selftests: Wrap vm_mmap() around GEM objects (diff) | |
drm/i915/selftests: Verify mmap_gtt revocation on unbinding
Whenever, we unbind (or change fence registers) on an object, we must
revoke any and all mmap_gtt using the previous bindings. Those user PTEs
point at the GGTT which know points into a new object, the wrong object.
Ergo, those PTEs must be cleared so that any user access provokes a new
page fault.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Reviewed-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107180601.30815-5-chris@chris-wilson.co.uk
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions