python
diff --git a/Doc/library/errno.rst b/Doc/library/errno.rst
@@ -613,6 +613,13 @@ defined by the module.  The specific list of defined symbols is available as
    No route to host
 
 
+.. data:: EHWPOISON
+
+   Memory page has hardware error.
+
+   .. versionadded:: next
+
+
 .. data:: EALREADY
 
    Operation already in progress. This error is mapped to the

@@ -289,6 +289,11 @@ dis
   This feature is also exposed via :option:`dis --show-positions`.
   (Contributed by Bénédikt Tran in :gh:`123165`.)
 
+errno
+-----
+
+* Add :data:`errno.EHWPOISON` error code.
+  (Contributed by James Roy in :gh:`126585`.)
 
 fractions
 ---------

diff --git a/Misc/NEWS.d/next/Library/2024-11-04-22-02-30.gh-issue-85046.Y5d_ZN.rst b/Misc/NEWS.d/next/Library/2024-11-04-22-02-30.gh-issue-85046.Y5d_ZN.rst
@@ -0,0 +1 @@
+Add :data:`~errno.EHWPOISON` error code to :mod:`errno`.
diff --git a/Modules/errnomodule.c b/Modules/errnomodule.c
@@ -845,6 +845,9 @@ errno_exec(PyObject *module)
 #ifdef ENOKEY
     add_errcode("ENOKEY", ENOKEY, "Required key not available");
 #endif
+#ifdef EHWPOISON
+    add_errcode("EHWPOISON", EHWPOISON, "Memory page has hardware error");
+#endif
 #ifdef EKEYEXPIRED
     add_errcode("EKEYEXPIRED", EKEYEXPIRED, "Key has expired");
 #endif
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Add :data:`~errno.EHWPOISON` error code to :mod:`errno`.