diff --git a/libc/kernel/uapi/misc/cxl.h b/libc/kernel/uapi/misc/cxl.h
index d9cfa5e..64b5992 100644
--- a/libc/kernel/uapi/misc/cxl.h
+++ b/libc/kernel/uapi/misc/cxl.h
@@ -25,17 +25,18 @@
   __u64 work_element_descriptor;
   __u64 amr;
   __s16 num_interrupts;
-  __s16 reserved1;
-  __s32 reserved2;
+  __u16 tid;
+  __s32 reserved1;
+  __u64 reserved2;
   __u64 reserved3;
   __u64 reserved4;
   __u64 reserved5;
-  __u64 reserved6;
 };
 #define CXL_START_WORK_AMR 0x0000000000000001ULL
 #define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL
 #define CXL_START_WORK_ERR_FF 0x0000000000000004ULL
-#define CXL_START_WORK_ALL (CXL_START_WORK_AMR | CXL_START_WORK_NUM_IRQS | CXL_START_WORK_ERR_FF)
+#define CXL_START_WORK_TID 0x0000000000000008ULL
+#define CXL_START_WORK_ALL (CXL_START_WORK_AMR | CXL_START_WORK_NUM_IRQS | CXL_START_WORK_ERR_FF | CXL_START_WORK_TID)
 #define CXL_MODE_DEDICATED 0x1
 #define CXL_MODE_DIRECTED 0x2
 #define CXL_AFUID_FLAG_SLAVE 0x1