Linux Assembly: Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall


Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
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To: Philipp Kohlbecher <pk031698@xxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Fri, 18 May 2007 16:08:40 -0700
Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-assembly@xxxxxxxxxxxxxxx
In-reply-to: <464E2B97.9040205@xxxxxxxxx>
References: <20070517220638.GA6532@xxxxxxxxxxxxxxxxxxxxx> <464CD44A.5000307@xxxxxxxxx> <464CE4CA.8000704@xxxxxxxxxxxxxxxxx> <464CE653.4020006@xxxxxxxxx> <464D64B2.6050104@xxxxxxxxxxxxxxxxx> <464E2B97.9040205@xxxxxxxxx>
User-agent: Thunderbird 2.0.0.0 (X11/20070507)

H. Peter Anvin wrote:

Sticking kernel mode values in those fields would add no value, except
as a poison (since %ss == KERNEL_DS and would cause a #GP(0) if it ever
reached IRET.)


#SS(0), rather, of course.

	-hpa
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References:
- [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
  - From: Philipp Kohlbecher
- Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
  - From: H. Peter Anvin
- Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
  - From: Philipp Kohlbecher
- Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
  - From: H. Peter Anvin
- Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
  - From: Philipp Kohlbecher
- Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall
  - From: H. Peter Anvin

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