diff --git a/libc/kernel/uapi/asm-riscv/asm/hwprobe.h b/libc/kernel/uapi/asm-riscv/asm/hwprobe.h
index 5c82561..3f30c88 100644
--- a/libc/kernel/uapi/asm-riscv/asm/hwprobe.h
+++ b/libc/kernel/uapi/asm-riscv/asm/hwprobe.h
@@ -53,6 +53,7 @@
 #define RISCV_HWPROBE_EXT_ZTSO (1ULL << 33)
 #define RISCV_HWPROBE_EXT_ZACAS (1ULL << 34)
 #define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35)
+#define RISCV_HWPROBE_EXT_ZIHINTPAUSE (1ULL << 36)
 #define RISCV_HWPROBE_KEY_CPUPERF_0 5
 #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
 #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
diff --git a/libc/kernel/uapi/asm-riscv/asm/kvm.h b/libc/kernel/uapi/asm-riscv/asm/kvm.h
index 4c759ed..12d8f61 100644
--- a/libc/kernel/uapi/asm-riscv/asm/kvm.h
+++ b/libc/kernel/uapi/asm-riscv/asm/kvm.h
@@ -127,6 +127,7 @@
   KVM_RISCV_ISA_EXT_ZFA,
   KVM_RISCV_ISA_EXT_ZTSO,
   KVM_RISCV_ISA_EXT_ZACAS,
+  KVM_RISCV_ISA_EXT_SSCOFPMF,
   KVM_RISCV_ISA_EXT_MAX,
 };
 enum KVM_RISCV_SBI_EXT_ID {