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authorJosh Poimboeuf <jpoimboe@redhat.com>2022-04-18 18:50:20 +0200
committerPeter Zijlstra <peterz@infradead.org>2022-04-19 21:58:48 +0200
commit4a5de9b76fcb3f477f73d5a63f6e27709e8af81f (patch)
tree42d3716fefa8989fdeee094668022cde9264df49 /scripts/link-vmlinux.sh
parentx86,objtool: Explicitly mark idtentry_body()s tail REACHABLE (diff)
downloadlinux-4a5de9b76fcb3f477f73d5a63f6e27709e8af81f.tar.xz
linux-4a5de9b76fcb3f477f73d5a63f6e27709e8af81f.zip
objtool: Enable unreachable warnings for CLANG LTO
With IBT support in, objtool is now fully capable of following vmlinux code flow in LTO mode. Start reporting unreachable warnings for Clang LTO as well. Fixes: ed53a0d97192 ("x86/alternative: Use .ibt_endbr_seal to seal indirect calls") Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/7b12df54bceeb0761fe9fc8269ea0c00501214a9.1650300597.git.jpoimboe@redhat.com
Diffstat (limited to 'scripts/link-vmlinux.sh')
-rwxr-xr-xscripts/link-vmlinux.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 20f44504a644..9361a1ef02c9 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -140,7 +140,7 @@ objtool_link()
if ! is_enabled CONFIG_FRAME_POINTER; then
objtoolopt="${objtoolopt} --no-fp"
fi
- if is_enabled CONFIG_GCOV_KERNEL || is_enabled CONFIG_LTO_CLANG; then
+ if is_enabled CONFIG_GCOV_KERNEL; then
objtoolopt="${objtoolopt} --no-unreachable"
fi
if is_enabled CONFIG_RETPOLINE; then