drm/xe: Add VM.uapi_flags to VM snapshot capture

Add VM.uapi_flags to VM snapshot capture VM snapshot capture. This is
useful information for debug and will help build a robust GPU hang
replay tool.

The current format is:

VM.uapi_flags: 0x%x

Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patch.msgid.link/20251126185952.546277-7-matthew.brost@intel.com

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 8bf3f9d3d644b06ef9dc006b29ce7cffa90ca8e1..00ffd3f03983da40d5a181377b7f4efa643a3241 100644 (file)
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -4043,6 +4043,7 @@ int xe_vm_validate_protected(struct xe_vm *vm)
 }
 
 struct xe_vm_snapshot {
+       int uapi_flags;
        unsigned long num_snaps;
        struct {
                u64 ofs, bo_ofs;
@@ -4082,6 +4083,13 @@ struct xe_vm_snapshot *xe_vm_snapshot_capture(struct xe_vm *vm)
                goto out_unlock;
        }
 
+       if (vm->flags & XE_VM_FLAG_FAULT_MODE)
+               snap->uapi_flags |= DRM_XE_VM_CREATE_FLAG_FAULT_MODE;
+       if (vm->flags & XE_VM_FLAG_LR_MODE)
+               snap->uapi_flags |= DRM_XE_VM_CREATE_FLAG_LR_MODE;
+       if (vm->flags & XE_VM_FLAG_SCRATCH_PAGE)
+               snap->uapi_flags |= DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE;
+
        snap->num_snaps = num_snaps;
        i = 0;
        drm_gpuvm_for_each_va(gpuva, &vm->gpuvm) {
@@ -4196,6 +4204,7 @@ void xe_vm_snapshot_print(struct xe_vm_snapshot *snap, struct drm_printer *p)
                return;
        }
 
+       drm_printf(p, "VM.uapi_flags: 0x%x\n", snap->uapi_flags);
        for (i = 0; i < snap->num_snaps; i++) {
                drm_printf(p, "[%llx].length: 0x%lx\n", snap->snap[i].ofs, snap->snap[i].len);