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drm/i915/stolen: consider I915_BO_ALLOC_GPU_ONLY

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Keep the behaviour consistent with normal lmem, where we assume CPU
access if by default required.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220315181425.576828-3-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2022-03-15 18:14:21 +00:00
parent b8ca8fef58
commit d511d013e2
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/i915/gem/i915_gem_stolen.c
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@ -695,6 +695,14 @@ static int _i915_gem_object_stolen_init(struct intel_memory_region *mem,
if (size == 0)
return -EINVAL;
/*
* With discrete devices, where we lack a mappable aperture there is no
* possible way to ever access this memory on the CPU side.
*/
if (mem->type == INTEL_MEMORY_STOLEN_LOCAL && !mem->io_size &&
!(flags & I915_BO_ALLOC_GPU_ONLY))
return -ENOSPC;
stolen = kzalloc(sizeof(*stolen), GFP_KERNEL);
if (!stolen)
return -ENOMEM;