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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2021-02-24 10:29:14 -0600 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@redhat.com> | 2021-04-19 12:36:32 -0500 |
| commit | 99033461e685b48549ec77608b4bda75ddf772ce (patch) | |
| tree | 07f19d4cb298b9b7fb1593cecf6287d83d696e7d /kernel/gcov/gcc_base.c | |
| parent | 900b4df347bbac4874149a226143a556909faba8 (diff) | |
objtool: Support asm jump tables
Objtool detection of asm jump tables would normally just work, except
for the fact that asm retpolines use alternatives. Objtool thinks the
alternative code path (a jump to the retpoline) is a sibling call.
Don't treat alternative indirect branches as sibling calls when the
original instruction has a jump table.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/460cf4dc675d64e1124146562cabd2c05aa322e8.1614182415.git.jpoimboe@redhat.com
Diffstat (limited to 'kernel/gcov/gcc_base.c')
0 files changed, 0 insertions, 0 deletions