diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2021-10-26 14:01:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-25 11:26:23 +0200 |
| commit | 908bd980a80ea23ff834c3fff828c3d37ada6cc2 (patch) | |
| tree | 5244490eed97a8aabc5fc52cbd573e6ec6b721c3 /tools/objtool/special.c | |
| parent | 023e78bbf13c15a55013ca25641509a6697170e1 (diff) | |
| download | linux-rt-908bd980a80ea23ff834c3fff828c3d37ada6cc2.tar.gz | |
objtool,x86: Replace alternatives with .retpoline_sites
commit 134ab5bd1883312d7a4b3033b05c6b5a1bb8889b upstream.
Instead of writing complete alternatives, simply provide a list of all
the retpoline thunk calls. Then the kernel is free to do with them as
it pleases. Simpler code all-round.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.850007165@infradead.org
[cascardo: fixed conflict because of missing
8b946cc38e063f0f7bb67789478c38f6d7d457c9]
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
[bwh: Backported to 5.10: deleted functions had slightly different code]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/objtool/special.c')
| -rw-r--r-- | tools/objtool/special.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/tools/objtool/special.c b/tools/objtool/special.c index 99a3a35772a5..aff0cee7bac1 100644 --- a/tools/objtool/special.c +++ b/tools/objtool/special.c @@ -105,14 +105,6 @@ static int get_alt_entry(struct elf *elf, struct special_entry *entry, return -1; } - /* - * Skip retpoline .altinstr_replacement... we already rewrite the - * instructions for retpolines anyway, see arch_is_retpoline() - * usage in add_{call,jump}_destinations(). - */ - if (arch_is_retpoline(new_reloc->sym)) - return 1; - reloc_to_sec_off(new_reloc, &alt->new_sec, &alt->new_off); /* _ASM_EXTABLE_EX hack */ |