linux-kernel - Re: [PATCH 1/7] x86: ia32entry.S: use more understandable constant

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Message-ID: <CALCETrWbLUW9wfrpPZ_qzAzEwgPq=djRAKgXzkW8jK+KPpMzPA@mail.gmail.com>
Date:	Tue, 24 Feb 2015 16:03:14 -0800
From:	Andy Lutomirski <luto@...capital.net>
To:	Denys Vlasenko <dvlasenk@...hat.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>, Oleg Nesterov <oleg@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Will Drewry <wad@...omium.org>,
	Kees Cook <keescook@...omium.org>, X86 ML <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/7] x86: ia32entry.S: use more understandable constant

On Tue, Feb 24, 2015 at 4:00 PM, Denys Vlasenko <dvlasenk@...hat.com> wrote:
> The last instance of "mysterious" SS+8 constant is replaced by SIZEOF_PTREGS.

Applied and checked by reading the macro definition :)

>
> Signed-off-by: Denys Vlasenko <dvlasenk@...hat.com>
> CC: Linus Torvalds <torvalds@...ux-foundation.org>
> CC: Steven Rostedt <rostedt@...dmis.org>
> CC: Ingo Molnar <mingo@...nel.org>
> CC: Borislav Petkov <bp@...en8.de>
> CC: "H. Peter Anvin" <hpa@...or.com>
> CC: Andy Lutomirski <luto@...capital.net>
> CC: Oleg Nesterov <oleg@...hat.com>
> CC: Frederic Weisbecker <fweisbec@...il.com>
> CC: Alexei Starovoitov <ast@...mgrid.com>
> CC: Will Drewry <wad@...omium.org>
> CC: Kees Cook <keescook@...omium.org>
> CC: x86@...nel.org
> CC: linux-kernel@...r.kernel.org
> ---
>  arch/x86/ia32/ia32entry.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
> index 6dcd372..ed97463 100644
> --- a/arch/x86/ia32/ia32entry.S
> +++ b/arch/x86/ia32/ia32entry.S
> @@ -536,7 +536,7 @@ ia32_ptregs_common:
>         CFI_ENDPROC
>         CFI_STARTPROC32 simple
>         CFI_SIGNAL_FRAME
> -       CFI_DEF_CFA     rsp,SS+8
> +       CFI_DEF_CFA     rsp,SIZEOF_PTREGS
>         CFI_REL_OFFSET  rax,RAX
>         CFI_REL_OFFSET  rcx,RCX
>         CFI_REL_OFFSET  rdx,RDX
> --
> 1.8.1.4
>



-- 
Andy Lutomirski
AMA Capital Management, LLC
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