diff --git a/libc/kernel/uapi/asm-arm64/asm/kvm.h b/libc/kernel/uapi/asm-arm64/asm/kvm.h
index 014504a..74aa7c6 100644
--- a/libc/kernel/uapi/asm-arm64/asm/kvm.h
+++ b/libc/kernel/uapi/asm-arm64/asm/kvm.h
@@ -115,6 +115,15 @@
   } exception;
   __u32 reserved[12];
 };
+struct kvm_arm_copy_mte_tags {
+  __u64 guest_ipa;
+  __u64 length;
+  void __user * addr;
+  __u64 flags;
+  __u64 reserved[2];
+};
+#define KVM_ARM_TAGS_TO_GUEST 0
+#define KVM_ARM_TAGS_FROM_GUEST 1
 #define KVM_REG_ARM_COPROC_MASK 0x000000000FFF0000
 #define KVM_REG_ARM_COPROC_SHIFT 16
 #define KVM_REG_ARM_CORE (0x0010 << KVM_REG_ARM_COPROC_SHIFT)
diff --git a/libc/kernel/uapi/asm-arm64/asm/unistd.h b/libc/kernel/uapi/asm-arm64/asm/unistd.h
index e93f3f1..06b85ed 100644
--- a/libc/kernel/uapi/asm-arm64/asm/unistd.h
+++ b/libc/kernel/uapi/asm-arm64/asm/unistd.h
@@ -21,4 +21,5 @@
 #define __ARCH_WANT_SET_GET_RLIMIT
 #define __ARCH_WANT_TIME32_SYSCALLS
 #define __ARCH_WANT_SYS_CLONE3
+#define __ARCH_WANT_MEMFD_SECRET
 #include <asm-generic/unistd.h>