Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.10 04/25] objtool: Treat .text.__x86.* as noinstr | Date | Tue, 19 Jul 2022 21:15:55 -0400 |
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From: Peter Zijlstra <peterz@infradead.org>
[ Upstream commit 951ddecf435659553ed15a9214e153a3af43a9a1 ]
Needed because zen_untrain_ret() will be called from noinstr code.
Also makes sense since the thunks MUST NOT contain instrumentation nor be poked with dynamic instrumentation.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org> --- tools/objtool/check.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 8932f41c387f..0149e0bdf0d8 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -274,7 +274,8 @@ static int decode_instructions(struct objtool_file *file) sec->text = true; if (!strcmp(sec->name, ".noinstr.text") || - !strcmp(sec->name, ".entry.text")) + !strcmp(sec->name, ".entry.text") || + !strncmp(sec->name, ".text.__x86.", 12)) sec->noinstr = true; for (offset = 0; offset < sec->len; offset += insn->len) { -- 2.35.1
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