Re: [PATCH v3 09/13] drm/i915/selftests: skip the mman tests for stolen

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On 6/29/22 14:14, Matthew Auld wrote:
It's not supported, and just skips later anyway. With small-BAR things
get more complicated since all of stolen is likely not even CPU
accessible, hence not passing I915_BO_ALLOC_GPU_ONLY just results in the
object create failing.

Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Cc: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Cc: Jon Bloomfield <jon.bloomfield@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Jordan Justen <jordan.l.justen@xxxxxxxxx>
Cc: Kenneth Graunke <kenneth@xxxxxxxxxxxxx>
Cc: Akeem G Abodunrin <akeem.g.abodunrin@xxxxxxxxx>
---
  drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 12 ++++++++++++
  1 file changed, 12 insertions(+)

This reminds me,

Is there a problem for fbdev (and hence things like plymouth) if the initial fbdev image ends up as a stolen memory object which in turn ends up not being mappable? I remember we discussed this before but can't recall what the answer was.

Anyway, for this patch

Reviewed-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>






diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 5bc93a1ce3e3..388c85b0f764 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -979,6 +979,9 @@ static int igt_mmap(void *arg)
  		};
  		int i;
+ if (mr->private)
+			continue;
+
  		for (i = 0; i < ARRAY_SIZE(sizes); i++) {
  			struct drm_i915_gem_object *obj;
  			int err;
@@ -1435,6 +1438,9 @@ static int igt_mmap_access(void *arg)
  		struct drm_i915_gem_object *obj;
  		int err;
+ if (mr->private)
+			continue;
+
  		obj = __i915_gem_object_create_user(i915, PAGE_SIZE, &mr, 1);
  		if (obj == ERR_PTR(-ENODEV))
  			continue;
@@ -1580,6 +1586,9 @@ static int igt_mmap_gpu(void *arg)
  		struct drm_i915_gem_object *obj;
  		int err;
+ if (mr->private)
+			continue;
+
  		obj = __i915_gem_object_create_user(i915, PAGE_SIZE, &mr, 1);
  		if (obj == ERR_PTR(-ENODEV))
  			continue;
@@ -1727,6 +1736,9 @@ static int igt_mmap_revoke(void *arg)
  		struct drm_i915_gem_object *obj;
  		int err;
+ if (mr->private)
+			continue;
+
  		obj = __i915_gem_object_create_user(i915, PAGE_SIZE, &mr, 1);
  		if (obj == ERR_PTR(-ENODEV))
  			continue;



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