[PATCH 2/2] cachelines
Chris Wilson
chris at chris-wilson.co.uk
Wed Nov 21 20:49:24 UTC 2018
---
drivers/gpu/drm/i915/selftests/i915_gem_context.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
index 56d3e52c6580..e22af7388cad 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
@@ -361,7 +361,7 @@ static int gpu_fill(struct drm_i915_gem_object *obj,
*/
batch = gpu_fill_dw(vma,
(dw * real_page_count(obj)) << PAGE_SHIFT |
- (dw * sizeof(u32)),
+ offset_in_page(dw * (CACHELINE_BYTES + sizeof(u32))),
real_page_count(obj),
dw);
if (IS_ERR(batch)) {
@@ -459,9 +459,11 @@ static int cpu_check(struct drm_i915_gem_object *obj, unsigned int max)
drm_clflush_virt_range(map, PAGE_SIZE);
for (m = 0; m < max; m++) {
- if (map[m] != m) {
+ u32 x = map[offset_in_page(m * (CACHELINE_BYTES + sizeof(*map))) / sizeof(*map)];
+
+ if (x != m) {
pr_err("Invalid value at page %d, offset %d: found %x expected %x\n",
- n, m, map[m], m);
+ n, m, x, m);
err = -EINVAL;
goto out_unmap;
}
--
2.19.1
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