[CI 30/44] drm/xe/uapi: Add DRM_XE_VM_CREATE_FLAG_PARTICIPATE_SVM flag

[Oak Zeng]

When a xe_vm is created with DRM_XE_VM_CREATE_FLAG_PARTICIPATE_SVM,
xe_vm shares the same process address space with the CPU process who
create this xe_vm.

Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Cc: Brian Welty <brian.welty at intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
Suggested-by: Christian Konig <Christian.koenig at amd.com>
Signed-off-by: Oak Zeng <oak.zeng at intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c       | 2 ++
 drivers/gpu/drm/xe/xe_vm_types.h | 1 +
 include/uapi/drm/xe_drm.h        | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 147a5d76a0ee..4aa5a596475e 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -1832,6 +1832,8 @@ int xe_vm_create_ioctl(struct drm_device *dev, void *data,
 		flags |= XE_VM_FLAG_LR_MODE;
 	if (args->flags & DRM_XE_VM_CREATE_FLAG_FAULT_MODE)
 		flags |= XE_VM_FLAG_FAULT_MODE;
+	if (args->flags & DRM_XE_VM_CREATE_FLAG_PARTICIPATE_SVM)
+		flags |= XE_VM_FLAG_PARTICIPATE_SVM;
 
 	vm = xe_vm_create(xe, flags);
 	if (IS_ERR(vm))
diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h
index 4d9707c19031..165c2ca258de 100644
--- a/drivers/gpu/drm/xe/xe_vm_types.h
+++ b/drivers/gpu/drm/xe/xe_vm_types.h
@@ -143,6 +143,7 @@ struct xe_vm {
 #define XE_VM_FLAG_BANNED		BIT(5)
 #define XE_VM_FLAG_TILE_ID(flags)	FIELD_GET(GENMASK(7, 6), flags)
 #define XE_VM_FLAG_SET_TILE_ID(tile)	FIELD_PREP(GENMASK(7, 6), (tile)->id)
+#define XE_VM_FLAG_PARTICIPATE_SVM		BIT(8)
 	unsigned long flags;
 
 	/** @composite_fence_ctx: context composite fence */
diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h
index af8ee6f929d4..ee09ed1ea3c2 100644
--- a/include/uapi/drm/xe_drm.h
+++ b/include/uapi/drm/xe_drm.h
@@ -830,6 +830,9 @@ struct drm_xe_gem_mmap_offset {
  *    demand when accessed, and also allows per-VM overcommit of memory.
  *    The xe driver internally uses recoverable pagefaults to implement
  *    this.
+ *  - %DRM_XE_VM_CREATE_FLAG_PARTICIPATE_SVM - This vm participates
+ *    SVM (shared virtual memory), which means this vm share one process
+ *    address space with CPU process who create this xe_vm.
  */
 struct drm_xe_vm_create {
 	/** @extensions: Pointer to the first extension struct, if any */
@@ -838,6 +841,7 @@ struct drm_xe_vm_create {
 #define DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE	(1 << 0)
 #define DRM_XE_VM_CREATE_FLAG_LR_MODE	        (1 << 1)
 #define DRM_XE_VM_CREATE_FLAG_FAULT_MODE	(1 << 2)
+#define DRM_XE_VM_CREATE_FLAG_PARTICIPATE_SVM	(1 << 3)
 	/** @flags: Flags */
 	__u32 flags;
 
-- 
2.26.3