diff --git a/libc/kernel/uapi/misc/ocxl.h b/libc/kernel/uapi/misc/ocxl.h
index 98d3eac..676aaf8 100644
--- a/libc/kernel/uapi/misc/ocxl.h
+++ b/libc/kernel/uapi/misc/ocxl.h
@@ -50,6 +50,16 @@
   __u64 global_mmio_size;
   __u64 reserved[13];
 };
+struct ocxl_ioctl_p9_wait {
+  __u16 thread_id;
+  __u16 reserved1;
+  __u32 reserved2;
+  __u64 reserved3[3];
+};
+#define OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT 0x01
+struct ocxl_ioctl_features {
+  __u64 flags[4];
+};
 struct ocxl_ioctl_irq_fd {
   __u64 irq_offset;
   __s32 eventfd;
@@ -61,4 +71,6 @@
 #define OCXL_IOCTL_IRQ_FREE _IOW(OCXL_MAGIC, 0x12, __u64)
 #define OCXL_IOCTL_IRQ_SET_FD _IOW(OCXL_MAGIC, 0x13, struct ocxl_ioctl_irq_fd)
 #define OCXL_IOCTL_GET_METADATA _IOR(OCXL_MAGIC, 0x14, struct ocxl_ioctl_metadata)
+#define OCXL_IOCTL_ENABLE_P9_WAIT _IOR(OCXL_MAGIC, 0x15, struct ocxl_ioctl_p9_wait)
+#define OCXL_IOCTL_GET_FEATURES _IOR(OCXL_MAGIC, 0x16, struct ocxl_ioctl_features)
 #endif