From fa1a82c985dba642de66f0a1918fc531007bf90f Mon Sep 17 00:00:00 2001 From: Himal Prasad Ghimiray Date: Thu, 21 Aug 2025 23:00:56 +0530 Subject: [PATCH] drm/xe/uapi: Add flag for consulting madvise hints on svm prefetch MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Introduce flag DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC to ensure prefetching in madvise-advised memory regions v2 (Matthew Brost) - Add kernel-doc v3 (Matthew Brost) - Fix kernel-doc Cc: Matthew Brost Reviewed-by: Matthew Brost Reviewed-by: Thomas Hellström Link: https://lore.kernel.org/r/20250821173104.3030148-13-himal.prasad.ghimiray@intel.com Signed-off-by: Himal Prasad Ghimiray --- include/uapi/drm/xe_drm.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h index 4e6e9a9164eef..115b9bca2a255 100644 --- a/include/uapi/drm/xe_drm.h +++ b/include/uapi/drm/xe_drm.h @@ -1010,6 +1010,10 @@ struct drm_xe_vm_destroy { * valid on VMs with DRM_XE_VM_CREATE_FLAG_FAULT_MODE set. The CPU address * mirror flag are only valid for DRM_XE_VM_BIND_OP_MAP operations, the BO * handle MBZ, and the BO offset MBZ. + * + * The @prefetch_mem_region_instance for %DRM_XE_VM_BIND_OP_PREFETCH can also be: + * - %DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC, which ensures prefetching occurs in + * the memory region advised by madvise. */ struct drm_xe_vm_bind_op { /** @extensions: Pointer to the first extension struct, if any */ @@ -1115,6 +1119,7 @@ struct drm_xe_vm_bind_op { /** @flags: Bind flags */ __u32 flags; +#define DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC -1 /** * @prefetch_mem_region_instance: Memory region to prefetch VMA to. * It is a region instance, not a mask. -- 2.47.3