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-rw-r--r--drivers/gpu/drm/xe/xe_guc_fwif.h1
-rw-r--r--drivers/gpu/drm/xe/xe_guc_submit.c9
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc_fwif.h b/drivers/gpu/drm/xe/xe_guc_fwif.h
index 08ffe59f22fa..057153f89b30 100644
--- a/drivers/gpu/drm/xe/xe_guc_fwif.h
+++ b/drivers/gpu/drm/xe/xe_guc_fwif.h
@@ -17,6 +17,7 @@
#define G2H_LEN_DW_TLB_INVALIDATE 3
#define GUC_ID_MAX 65535
+#define GUC_ID_UNKNOWN 0xffffffff
#define GUC_CONTEXT_DISABLE 0
#define GUC_CONTEXT_ENABLE 1
diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c
index 37d4ad8e4f5c..9e0f86f3778b 100644
--- a/drivers/gpu/drm/xe/xe_guc_submit.c
+++ b/drivers/gpu/drm/xe/xe_guc_submit.c
@@ -2021,6 +2021,15 @@ int xe_guc_exec_queue_memory_cat_error_handler(struct xe_guc *guc, u32 *msg,
guc_id = msg[0];
+ if (guc_id == GUC_ID_UNKNOWN) {
+ /*
+ * GuC uses GUC_ID_UNKNOWN if it can not map the CAT fault to any PF/VF
+ * context. In such case only PF will be notified about that fault.
+ */
+ xe_gt_err_ratelimited(gt, "Memory CAT error reported by GuC!\n");
+ return 0;
+ }
+
q = g2h_exec_queue_lookup(guc, guc_id);
if (unlikely(!q))
return -EPROTO;