| Date | Thu, 3 Sep 2020 14:58:28 -0700 | From | Kees Cook <> | Subject | Re: [PATCH v2 08/28] x86, build: use objtool mcount |
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On Thu, Sep 03, 2020 at 01:30:33PM -0700, Sami Tolvanen wrote: > Select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION is selected to use > objtool to generate __mcount_loc sections for dynamic ftrace with > Clang and gcc <5. > > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Am I right to understand that this fixes mcount for Clang generally (i.e. it's not _strictly_ related to LTO, though LTO depends on this change)? And does this mean mcount was working for gcc < 5?
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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