xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/radeon: Refuse to migrate a prime BO to VRAM. (v2)

Browse Source 
BOs shared via dma-buf, either imported or exported, cannot sensibly be migrated to VRAM
without breaking the dma-buf sharing. Refuse userspace requests to migrate to VRAM,
ensure such BOs are not migrated during command submission, and refuse to pin them
to VRAM.

v2: Don't pin BOs in GTT. Instead, refuse to migrate BOs to VRAM.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christopher James Halse Rogers
2017-04-03 13:35:23 +10:00
committed by Alex Deucher
parent 0d16d29940
commit ede2e019ad
3 changed files with 19 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/radeon/radeon_gem.c
View File

@@ -120,6 +120,10 @@ static int radeon_gem_set_domain(struct drm_gem_object *gobj,
return r;
}
}
if (domain == RADEON_GEM_DOMAIN_VRAM && robj->prime_shared_count) {
/* A BO that is associated with a dma-buf cannot be sensibly migrated to VRAM */
return -EINVAL;
}
return 0;
}