From 6cf5d14a0bf730d6e45c407b7e3bedb1a5d8812f Mon Sep 17 00:00:00 2001 From: Matthew Brost Date: Wed, 26 Nov 2025 10:59:47 -0800 Subject: [PATCH] drm/xe: Add pat_index to properties line in VM snapshot capture MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add pat index to properties line in VM snapshot capture indicating the VMA caching properites. This is useful information for debug and will help build a robust GPU hang replay tool. The current format is: []: ||mem_region=0x%x|pat_index=%d Permissions has two options, either "read_only" or "read_write". Type has three options, either "userptr", "null_sparse", or "bo". Memory region is a bit mask of where the memory is located. Pat index corresponds to the value setup upon VM bind. Cc: José Roberto de Souza Signed-off-by: Matthew Brost Reviewed-by: Jonathan Cavitt Link: https://patch.msgid.link/20251126185952.546277-5-matthew.brost@intel.com --- drivers/gpu/drm/xe/xe_vm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index f2cf95d23bd0..b298953d2eed 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -4052,6 +4052,7 @@ struct xe_vm_snapshot { #define XE_VM_SNAP_FLAG_IS_NULL BIT(2) unsigned long flags; int uapi_mem_region; + int pat_index; struct xe_bo *bo; void *data; struct mm_struct *mm; @@ -4094,6 +4095,7 @@ struct xe_vm_snapshot *xe_vm_snapshot_capture(struct xe_vm *vm) snap->snap[i].len = xe_vma_size(vma); snap->snap[i].flags = xe_vma_read_only(vma) ? XE_VM_SNAP_FLAG_READ_ONLY : 0; + snap->snap[i].pat_index = vma->attr.pat_index; if (bo) { snap->snap[i].bo = xe_bo_get(bo); snap->snap[i].bo_ofs = xe_vma_bo_offset(vma); @@ -4195,7 +4197,7 @@ void xe_vm_snapshot_print(struct xe_vm_snapshot *snap, struct drm_printer *p) for (i = 0; i < snap->num_snaps; i++) { drm_printf(p, "[%llx].length: 0x%lx\n", snap->snap[i].ofs, snap->snap[i].len); - drm_printf(p, "[%llx].properties: %s|%s|mem_region=0x%lx\n", + drm_printf(p, "[%llx].properties: %s|%s|mem_region=0x%lx|pat_index=%d\n", snap->snap[i].ofs, snap->snap[i].flags & XE_VM_SNAP_FLAG_READ_ONLY ? "read_only" : "read_write", @@ -4204,7 +4206,8 @@ void xe_vm_snapshot_print(struct xe_vm_snapshot *snap, struct drm_printer *p) snap->snap[i].flags & XE_VM_SNAP_FLAG_USERPTR ? "userptr" : "bo", snap->snap[i].uapi_mem_region == -1 ? 0 : - BIT(snap->snap[i].uapi_mem_region)); + BIT(snap->snap[i].uapi_mem_region), + snap->snap[i].pat_index); if (IS_ERR(snap->snap[i].data)) { drm_printf(p, "[%llx].error: %li\n", snap->snap[i].ofs, -- 2.47.3