From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: [PATCH 2.6.21.1] i386: save registers before intra-privilege syscall Date: Fri, 18 May 2007 16:08:40 -0700 Message-ID: <464E31F8.7010701@zytor.com> References: <20070517220638.GA6532@localhost.localdomain> <464CD44A.5000307@zytor.com> <464CE4CA.8000704@uni-greifswald.de> <464CE653.4020006@zytor.com> <464D64B2.6050104@uni-greifswald.de> <464E2B97.9040205@zytor.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <464E2B97.9040205@zytor.com> Sender: linux-assembly-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Philipp Kohlbecher Cc: Dave Jones , Arnd Bergmann , linux-kernel@vger.kernel.org, linux-assembly@vger.kernel.org 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