For example, we may want to split a 2MiB large page into multiple 64KiB
PTEs. To do so, we want to allow a vma that only has the 2MiB flag set
to utilise the 64KiB as required, i.e. we want to include all larger
pages as well.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 19b2d991b5d8..9e1756216ada 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1074,7 +1074,7 @@ static void gen8_ppgtt_insert_huge_entries(struct i915_vma *vma,
gen8_pte_t *vaddr;
u16 index, max;
- if (vma->page_sizes.sg & I915_GTT_PAGE_SIZE_2M &&
+ if (vma->page_sizes.sg & -I915_GTT_PAGE_SIZE_2M &&
IS_ALIGNED(iter->dma, I915_GTT_PAGE_SIZE_2M) &&
rem >= I915_GTT_PAGE_SIZE_2M && !idx.pte) {
index = idx.pde;
@@ -1092,7 +1092,7 @@ static void gen8_ppgtt_insert_huge_entries(struct i915_vma *vma,
page_size = I915_GTT_PAGE_SIZE;
if (!index &&
- vma->page_sizes.sg & I915_GTT_PAGE_SIZE_64K &&
+ vma->page_sizes.sg & -I915_GTT_PAGE_SIZE_64K &&
IS_ALIGNED(iter->dma, I915_GTT_PAGE_SIZE_64K) &&
(IS_ALIGNED(rem, I915_GTT_PAGE_SIZE_64K) ||
rem >= (max - index) * I915_GTT_PAGE_SIZE))
--
2.19.1
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