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* [Intel-gfx] [PATCH] drm/i915/selftests: Avoid choosing zero for phys_sz
@ 2020-02-12  8:54 Chris Wilson
  2020-02-12 10:09 ` Matthew Auld
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Chris Wilson @ 2020-02-12  8:54 UTC (permalink / raw)
  To: intel-gfx; +Cc: Matthew Auld

Make sure we avoid ending up with a phys_sz of 0, or for phys_sz to be
larger than the actual size.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
---
 drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
index f29da4560dc0..31549ad83fa6 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
@@ -247,10 +247,11 @@ static int igt_fill_blt_thread(void *arg)
 
 		total = min(total, max);
 		sz = i915_prandom_u32_max_state(total, prng) + 1;
-		phys_sz = sz % max_phys_size;
+		phys_sz = sz % max_phys_size + 1;
 
 		sz = round_up(sz, PAGE_SIZE);
 		phys_sz = round_up(phys_sz, PAGE_SIZE);
+		phys_sz = min(phys_sz, sz);
 
 		pr_debug("%s with phys_sz= %x, sz=%x, val=%x\n", __func__,
 			 phys_sz, sz, val);
@@ -364,10 +365,11 @@ static int igt_copy_blt_thread(void *arg)
 
 		total = min(total, max);
 		sz = i915_prandom_u32_max_state(total, prng) + 1;
-		phys_sz = sz % max_phys_size;
+		phys_sz = sz % max_phys_size + 1;
 
 		sz = round_up(sz, PAGE_SIZE);
 		phys_sz = round_up(phys_sz, PAGE_SIZE);
+		phys_sz = min(phys_sz, sz);
 
 		pr_debug("%s with phys_sz= %x, sz=%x, val=%x\n", __func__,
 			 phys_sz, sz, val);
-- 
2.25.0

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^ permalink raw reply related	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-02-14  4:19 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-12  8:54 [Intel-gfx] [PATCH] drm/i915/selftests: Avoid choosing zero for phys_sz Chris Wilson
2020-02-12 10:09 ` Matthew Auld
2020-02-12 11:52 ` [Intel-gfx] ✓ Fi.CI.BAT: success for " Patchwork
2020-02-14  4:19 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork

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