diff --git a/libc-test/semver/linux-i686.txt b/libc-test/semver/linux-i686.txt
index aa379e1dcec62..8d1c48b82ce94 100644
--- a/libc-test/semver/linux-i686.txt
+++ b/libc-test/semver/linux-i686.txt
@@ -215,6 +215,8 @@ fsblkcnt64_t
 fsfilcnt64_t
 getcontext
 greg_t
+ioperm
+iopl
 makecontext
 max_align_t
 mcontext_t
diff --git a/libc-test/semver/linux-x86_64.txt b/libc-test/semver/linux-x86_64.txt
index 8ae1037764e84..8142fdf548b20 100644
--- a/libc-test/semver/linux-x86_64.txt
+++ b/libc-test/semver/linux-x86_64.txt
@@ -140,6 +140,8 @@ TIOCGRS485
 TIOCSBRK
 TIOCSRS485
 greg_t
+ioperm
+iopl
 max_align_t
 mcontext_t
 ucontext_t
diff --git a/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs b/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
index 86536f185750f..88d70d7deb5da 100644
--- a/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
@@ -802,8 +802,6 @@ extern "C" {
     pub fn setcontext(ucp: *const ucontext_t) -> ::c_int;
     pub fn makecontext(ucp: *mut ucontext_t, func: extern "C" fn(), argc: ::c_int, ...);
     pub fn swapcontext(uocp: *mut ucontext_t, ucp: *const ucontext_t) -> ::c_int;
-    pub fn iopl(level: ::c_int) -> ::c_int;
-    pub fn ioperm(from: ::c_ulong, num: ::c_ulong, turn_on: ::c_int) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 2ce09ed168df8..71f4bbf04cb35 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -1777,6 +1777,16 @@ cfg_if! {
     }
 }
 
+cfg_if! {
+    if #[cfg(all(any(target_env = "gnu", target_env = "musl", target_env = "ohos"),
+                 any(target_arch = "x86_64", target_arch = "x86")))] {
+        extern "C" {
+            pub fn iopl(level: ::c_int) -> ::c_int;
+            pub fn ioperm(from: ::c_ulong, num: ::c_ulong, turn_on: ::c_int) -> ::c_int;
+        }
+    }
+}
+
 cfg_if! {
     if #[cfg(any(target_env = "gnu", target_env = "musl", target_env = "ohos"))] {
         pub const ABDAY_1: ::nl_item = 0x20000;