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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-03-31 12:46:20 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-03-31 14:46:52 +0300 |
| commit | ee8efa80799f0f7d84c87bec6c4def7fa3556b95 (patch) | |
| tree | 22a17317799ae96afc2cbcde7c4048b35a0c40f3 /drivers/gpu/drm/i915/i915_gem_object.h | |
| parent | cde5f7edd511b190c175ab817f3f02c5f0897895 (diff) | |
| download | linux-ee8efa80799f0f7d84c87bec6c4def7fa3556b95.tar.xz | |
drm/i915: Check domains for userptr on release
When we return pages to the system, we release control over them and
should defensively return them to the CPU write domain so that we catch
any external writes on reacquiring them (e.g. to transparently
swapout/swapin). While we did this defensive clflushing for ordinary
shmem pages, it was forgotten for userptr. Fortunately, userptr objects
are normally cache coherent and so oblivious to the forgotten domain
tracking.
References: a679f58d0510 ("drm/i915: Flush pages on acquisition")
References: 754a25442705 ("drm/i915: Skip object locking around a no-op set-domain ioctl")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190331094620.15185-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_object.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_object.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_object.h b/drivers/gpu/drm/i915/i915_gem_object.h index 1a24dc97e4fd..ca93a40c0c87 100644 --- a/drivers/gpu/drm/i915/i915_gem_object.h +++ b/drivers/gpu/drm/i915/i915_gem_object.h @@ -502,4 +502,8 @@ void i915_gem_object_set_cache_coherency(struct drm_i915_gem_object *obj, unsigned int cache_level); void i915_gem_object_flush_if_display(struct drm_i915_gem_object *obj); +void __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj, + struct sg_table *pages, + bool needs_clflush); + #endif |