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From: Matthew Auld <matthew.auld@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm/i915/blt: fixup block_size rounding
Date: Mon, 28 Oct 2019 16:39:50 +0000	[thread overview]
Message-ID: <20191028163950.9429-1-matthew.auld@intel.com> (raw)

There is nothing to say that the obj->base.size is actually a multiple
of the block_size.

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gem/i915_gem_object_blt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
index 516e61e99212..5597f1345a63 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
@@ -30,7 +30,7 @@ struct i915_vma *intel_emit_vma_fill_blt(struct intel_context *ce,
 	GEM_BUG_ON(intel_engine_is_virtual(ce->engine));
 	intel_engine_pm_get(ce->engine);
 
-	count = div_u64(vma->size, block_size);
+	count = DIV64_U64_ROUND_UP(vma->size, block_size);
 	size = (1 + 8 * count) * sizeof(u32);
 	size = round_up(size, PAGE_SIZE);
 	pool = intel_engine_get_pool(ce->engine, size);
@@ -214,7 +214,7 @@ struct i915_vma *intel_emit_vma_copy_blt(struct intel_context *ce,
 	GEM_BUG_ON(intel_engine_is_virtual(ce->engine));
 	intel_engine_pm_get(ce->engine);
 
-	count = div_u64(dst->size, block_size);
+	count = DIV64_U64_ROUND_UP(dst->size, block_size);
 	size = (1 + 11 * count) * sizeof(u32);
 	size = round_up(size, PAGE_SIZE);
 	pool = intel_engine_get_pool(ce->engine, size);
-- 
2.20.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

WARNING: multiple messages have this Message-ID (diff)
From: Matthew Auld <matthew.auld@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH] drm/i915/blt: fixup block_size rounding
Date: Mon, 28 Oct 2019 16:39:50 +0000	[thread overview]
Message-ID: <20191028163950.9429-1-matthew.auld@intel.com> (raw)
Message-ID: <20191028163950.KbCheyWRDsee6--hk3Tt8PEJ1DGw1ZqFyGGhRfqz3l4@z> (raw)

There is nothing to say that the obj->base.size is actually a multiple
of the block_size.

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gem/i915_gem_object_blt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
index 516e61e99212..5597f1345a63 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_blt.c
@@ -30,7 +30,7 @@ struct i915_vma *intel_emit_vma_fill_blt(struct intel_context *ce,
 	GEM_BUG_ON(intel_engine_is_virtual(ce->engine));
 	intel_engine_pm_get(ce->engine);
 
-	count = div_u64(vma->size, block_size);
+	count = DIV64_U64_ROUND_UP(vma->size, block_size);
 	size = (1 + 8 * count) * sizeof(u32);
 	size = round_up(size, PAGE_SIZE);
 	pool = intel_engine_get_pool(ce->engine, size);
@@ -214,7 +214,7 @@ struct i915_vma *intel_emit_vma_copy_blt(struct intel_context *ce,
 	GEM_BUG_ON(intel_engine_is_virtual(ce->engine));
 	intel_engine_pm_get(ce->engine);
 
-	count = div_u64(dst->size, block_size);
+	count = DIV64_U64_ROUND_UP(dst->size, block_size);
 	size = (1 + 11 * count) * sizeof(u32);
 	size = round_up(size, PAGE_SIZE);
 	pool = intel_engine_get_pool(ce->engine, size);
-- 
2.20.1

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

             reply	other threads:[~2019-10-28 16:40 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-28 16:39 Matthew Auld [this message]
2019-10-28 16:39 ` [Intel-gfx] [PATCH] drm/i915/blt: fixup block_size rounding Matthew Auld
2019-10-28 16:46 ` Ville Syrjälä
2019-10-28 16:46   ` [Intel-gfx] " Ville Syrjälä
2019-10-28 17:33   ` Chris Wilson
2019-10-28 17:33     ` [Intel-gfx] " Chris Wilson
2019-10-28 20:10 ` ✓ Fi.CI.BAT: success for " Patchwork
2019-10-28 20:10   ` [Intel-gfx] " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2019-10-28 21:55 [PATCH] " Chris Wilson

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