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From: Andy Lutomirski <luto@amacapital.net>
Date: Wed, 11 Feb 2015 12:24:00 -0800
Message-ID: <CALCETrVozupixR2cQQnS_aS4DvdZdfijjKE4G9dqvHoHpn=1oQ@mail.gmail.com>
Subject: Re: [PATCH] x86: introduce push/pop macros which generate
 CFI_REL_OFFSET and CFI_RESTORE
To: Denys Vlasenko <dvlasenk@redhat.com>
Cc: "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>,
        Borislav Petkov <bp@alien8.de>,
        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>
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On Sun, Jan 11, 2015 at 3:07 PM, Denys Vlasenko <dvlasenk@redhat.com> wrote:
> Sequences
>         pushl_cfi %reg
>         CFI_REL_OFFSET reg, 0
> and
>         popl_cfi %reg
>         CFI_RESTORE reg
> happen quite often. This patch adds macros which generate them.
>
> No assembly changes (verified with objdump -dr vmlinux.o).

Applied as-is.  I'm sure that there's an even better way to do this,
but I think that this patch is a clear improvement.

--Andy