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drm/amdgpu: Allow more flags to be set on gem create.

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The GEM create flag AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE
specifies that gem memory contains sensitive information and
should be cleared to prevent snooping.

The COHERENT and UNCACHED gem create flags enable memory
features related to sharing memory across devices.

For CRIU we need to re-create KFD BOs through the
GEM_CREATE IOCTL, so allow those KFD specific flags here as well.
This will also aid us in the future and allows to move
the KFD components over using the render node for allocations.

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
David Francis 2025-08-12 14:19:18 -04:00 committed by Alex Deucher
parent 4bf83dd6e3
commit 0317e0e224
2 changed files with 15 additions and 9 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
View File

@ -442,15 +442,7 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
int r;
/* reject invalid gem flags */
if (flags & ~(AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
AMDGPU_GEM_CREATE_NO_CPU_ACCESS |
AMDGPU_GEM_CREATE_CPU_GTT_USWC |
AMDGPU_GEM_CREATE_VRAM_CLEARED |
AMDGPU_GEM_CREATE_VM_ALWAYS_VALID |
AMDGPU_GEM_CREATE_EXPLICIT_SYNC |
AMDGPU_GEM_CREATE_ENCRYPTED |
AMDGPU_GEM_CREATE_GFX12_DCC |
AMDGPU_GEM_CREATE_DISCARDABLE))
if (flags & ~AMDGPU_GEM_CREATE_SETTABLE_MASK)
return -EINVAL;
/* reject invalid gem domains */

14
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
View File

@ -71,4 +71,18 @@ int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data,
int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);
#define AMDGPU_GEM_CREATE_SETTABLE_MASK (AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | \
AMDGPU_GEM_CREATE_NO_CPU_ACCESS | \
AMDGPU_GEM_CREATE_CPU_GTT_USWC | \
AMDGPU_GEM_CREATE_VRAM_CLEARED | \
AMDGPU_GEM_CREATE_VM_ALWAYS_VALID | \
AMDGPU_GEM_CREATE_EXPLICIT_SYNC | \
AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE | \
AMDGPU_GEM_CREATE_ENCRYPTED | \
AMDGPU_GEM_CREATE_GFX12_DCC | \
AMDGPU_GEM_CREATE_DISCARDABLE | \
AMDGPU_GEM_CREATE_COHERENT | \
AMDGPU_GEM_CREATE_UNCACHED | \
AMDGPU_GEM_CREATE_EXT_COHERENT)
#endif