linux-kernel - Re: [PATCH] x86: introduce push/pop macros which generate CFI_REL_OFFSET and CFI

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Message-ID: <CAK1hOcMj6S+fzECOOp7jS47fRecjXXLkaQ=yQMHHwvfX7vhY6Q@mail.gmail.com>
Date:	Mon, 12 Jan 2015 07:23:44 +0100
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Denys Vlasenko <dvlasenk@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	X86 ML <x86@...nel.org>, Alexei Starovoitov <ast@...mgrid.com>,
	Will Drewry <wad@...omium.org>,
	Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH] x86: introduce push/pop macros which generate
 CFI_REL_OFFSET and CFI_RESTORE

On Mon, Jan 12, 2015 at 1:38 AM, Andy Lutomirski <luto@...capital.net> 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).
>
> Looks sane to me.  Where does this apply in relation to the rest of your series?

On top of my latest four-patch set.
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