summaryrefslogtreecommitdiff
path: root/arch/x86/entry
diff options
context:
space:
mode:
authorPeter Zijlstra <peterz@infradead.org>2022-04-08 12:45:56 +0300
committerPeter Zijlstra <peterz@infradead.org>2022-04-19 22:58:48 +0300
commitd66e9d50ea5cd76b2c4875c758efad665283d7ad (patch)
tree40e05c3bf3f9a9667f1dd324edb115f83c3a2da6 /arch/x86/entry
parentd4e5268a08b211b536fed29beb24271ecd85187e (diff)
downloadlinux-d66e9d50ea5cd76b2c4875c758efad665283d7ad.tar.xz
x86,objtool: Explicitly mark idtentry_body()s tail REACHABLE
Objtool can figure out that some \cfunc()s are noreturn and then complains about certain instances having unreachable tails: vmlinux.o: warning: objtool: asm_exc_xen_unknown_trap()+0x16: unreachable instruction Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20220408094718.441854969@infradead.org
Diffstat (limited to 'arch/x86/entry')
-rw-r--r--arch/x86/entry/entry_64.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 4faac48ebec5..73d958522b6a 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -337,6 +337,9 @@ SYM_CODE_END(ret_from_fork)
call \cfunc
+ /* For some configurations \cfunc ends up being a noreturn. */
+ REACHABLE
+
jmp error_return
.endm