From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: Mon, 20 Apr 2026 02:57:48 +0000 (-0700)
Subject: klp-build: Reject patches to realmode
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df0d7bb04a27e48a0fb5fd32223f5ab248876cab;p=thirdparty%2Flinux.git

klp-build: Reject patches to realmode

Realmode code is compiled as a separate 16-bit binary and embedded into
the kernel image via rmpiggy.S.  It can't be livepatched.

Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---

diff --git a/scripts/livepatch/klp-build b/scripts/livepatch/klp-build
index a70d48d984532..2bb35de5db757 100755
--- a/scripts/livepatch/klp-build
+++ b/scripts/livepatch/klp-build
@@ -357,7 +357,7 @@ check_unsupported_patches() {
 
 		for file in "${files[@]}"; do
 			case "$file" in
-				lib/*|*/vdso/*|*.S)
+				lib/*|*/vdso/*|*/realmode/rm/*|*.S)
 					die "${patch}: unsupported patch to $file"
 					;;
 			esac