[Intel-gfx] [PATCH] drm/i915/selftests: Fix MI_STORE_DWORD_IMM alignment

Chris Wilson chris at chris-wilson.co.uk
Wed Mar 6 08:24:47 UTC 2019


MI_STORE_DWORD_IMM wants to write into a dword-aligned (4B) address, we
mistakenly cleared bit2 and not bits 0 and 1.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at intel.com>
---
 drivers/gpu/drm/i915/selftests/i915_gem_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
index 30111c004eb6..0346ff224d5d 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
@@ -1433,7 +1433,7 @@ static int igt_vm_isolation(void *arg)
 
 			div64_u64_rem(i915_prandom_u64_state(&prng),
 				      vm_total, &offset);
-			offset &= ~sizeof(u32);
+			offset &= -sizeof(u32);
 			offset += I915_GTT_PAGE_SIZE;
 
 			err = write_to_scratch(ctx_a, engine,
-- 
2.20.1



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