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Date: Mon, 12 Jan 2015 20:37:04 +0100
From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Oleg Nesterov <oleg@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        Frederic Weisbecker <fweisbec@gmail.com>, X86 ML <x86@kernel.org>,
        Alexei Starovoitov <ast@plumgrid.com>, Will Drewry <wad@chromium.org>,
        Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH] x86: introduce push/pop macros which generate
 CFI_REL_OFFSET and CFI_RESTORE
Message-ID: <20150112193704.GG3904@pd.tnic>
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 <20150112192314.GF3904@pd.tnic>
 <CALCETrXzEPKPFKBeKF3UMduNe1ViQTC6vULEySo_0XTJcK7Qkw@mail.gmail.com>
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Andy, please trim your replies.

On Mon, Jan 12, 2015 at 11:25:39AM -0800, Andy Lutomirski wrote:
> I think that some users don't want the CFI_REL_OFFSET.

Why? I thought those two annotations are independent? As you said:

"IOW, one is to keep the stack frame tracking consistent and the other
is to tell the unwinder about the register we just saved."

Sounds to me like we want both...

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--