| From | Andy Lutomirski <> | Date | Fri, 8 May 2020 17:11:47 -0700 | Subject | Re: [patch V4 part 2 12/18] x86,objtool: Make entry_64_compat.S objtool clean |
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On Tue, May 5, 2020 at 7:14 AM Thomas Gleixner <tglx@linutronix.de> wrote: > > Currently entry_64_compat is exempt from objtool, but with vmlinux > mode there is no hiding it. > > Make the following changes to make it pass: > > - change entry_SYSENTER_compat to STT_NOTYPE; it's not a function > and doesn't have function type stack setup. > > - mark all STT_NOTYPE symbols with UNWIND_HINT_EMPTY; so we do > validate them and don't treat them as unreachable. > > - don't abuse RSP as a temp register, this confuses objtool > mightily as it (rightfully) thinks we're doing unspeakable > things to the stack. >
Acked-by: Andy Lutomirski <luto@kernel.org>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Did a From line get eaten?
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