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| author | Chris Wilson | 2018-10-25 11:18:23 +0200 |
|---|---|---|
| committer | Chris Wilson | 2018-10-26 10:20:05 +0200 |
| commit | 6fc4e48f9ed46e9adff236a0c350074aafa3b7fa (patch) | |
| tree | 89cfece8edf14b42a65d6ba4163132e367da02b4 /drivers/gpu/drm/i915/i915_gem_gtt.h | |
| parent | drm/i915: Mark up GTT sizes as u64 (diff) | |
| download | kernel-qcow2-linux-6fc4e48f9ed46e9adff236a0c350074aafa3b7fa.tar.gz kernel-qcow2-linux-6fc4e48f9ed46e9adff236a0c350074aafa3b7fa.tar.xz kernel-qcow2-linux-6fc4e48f9ed46e9adff236a0c350074aafa3b7fa.zip | |
drm/i915: Compare user's 64b GTT offset even on 32b
Beware mixing unsigned long constants and 64b values, as on 32b the
constant will be zero extended and discard the high 32b when used as
a mask!
Reported-by: Sergii Romantsov <sergii.romantsov@globallogic.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108282
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181025091823.20571-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index aa8307043036..5d2c5ba55ad8 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -49,6 +49,8 @@ #define I915_GTT_PAGE_SIZE I915_GTT_PAGE_SIZE_4K #define I915_GTT_MAX_PAGE_SIZE I915_GTT_PAGE_SIZE_2M +#define I915_GTT_PAGE_MASK -I915_GTT_PAGE_SIZE + #define I915_GTT_MIN_ALIGNMENT I915_GTT_PAGE_SIZE #define I915_FENCE_REG_NONE -1 |