drm/amdgpu: add flag to delay VM updates
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index c3ea363..975edb1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -525,8 +525,8 @@
return -EINVAL;
}
- invalid_flags = ~(AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
- AMDGPU_VM_PAGE_EXECUTABLE);
+ invalid_flags = ~(AMDGPU_VM_DELAY_UPDATE | AMDGPU_VM_PAGE_READABLE |
+ AMDGPU_VM_PAGE_WRITEABLE | AMDGPU_VM_PAGE_EXECUTABLE);
if ((args->flags & invalid_flags)) {
dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n",
args->flags, invalid_flags);
@@ -579,7 +579,7 @@
break;
}
- if (!r)
+ if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE))
amdgpu_gem_va_update_vm(adev, bo_va);
drm_gem_object_unreference_unlocked(gobj);
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 8edf104..b6fce90 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -313,6 +313,9 @@
#define AMDGPU_VA_OP_MAP 1
#define AMDGPU_VA_OP_UNMAP 2
+/* Delay the page table update till the next CS */
+#define AMDGPU_VM_DELAY_UPDATE (1 << 0)
+
/* Mapping flags */
/* readable mapping */
#define AMDGPU_VM_PAGE_READABLE (1 << 1)