linux-kernel - Re: [PATCH] x86: vdso32/syscall.S: do not load __USER32

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Message-ID: <20150324063430.GB26302@gmail.com>
Date:	Tue, 24 Mar 2015 07:34:31 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.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] x86: vdso32/syscall.S: do not load __USER32_DS to %ss


* Denys Vlasenko <vda.linux@...glemail.com> wrote:

> On Mon, Mar 23, 2015 at 9:38 PM, Andy Lutomirski <luto@...capital.net> wrote:
> > Actually, I want to remove the added comment in the code.  I don't see
> > why we should have a specific comment about SS and not about, say, CS,
> > ESP, or anything else.  OK?
> 
> Ok.

Might be nice to place a more generic description there, which 
registers are expected to be saved by user-space calling in here, etc.

Thanks,

	Ingo
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