[lkml]   [2020]   [Sep]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 08/28] x86, build: use objtool mcount
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 <>

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 <>

Kees Cook

 \ /
  Last update: 2020-09-03 23:59    [W:0.347 / U:0.372 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site