Date: Thu, 4 Mar 2004 04:15:57 +0100
From: Andrea Arcangeli <andrea@suse.de>
To: john stultz <johnstul@us.ibm.com>
Cc: Ulrich Drepper <drepper@redhat.com>, lkml <linux-kernel@vger.kernel.org>,
       Andi Kleen <ak@suse.de>, Jamie Lokier <jamie@shareable.org>,
       "Martin J. Bligh" <mbligh@aracnet.com>,
       Wim Coekaerts <wim.coekaerts@oracle.com>,
       Joel Becker <Joel.Becker@oracle.com>, Chris McDermott <lcm@us.ibm.com>
Subject: Re: [RFC][PATCH] linux-2.6.4-pre1_vsyscall-gtod_B3-part3 (3/3)
Message-ID: <20040304031557.GD4922@dualathlon.random>
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On Wed, Mar 03, 2004 at 06:54:49PM -0800, john stultz wrote:
> On Wed, 2004-03-03 at 18:47, Andrea Arcangeli wrote:
> > And sysenter is at a fixed address in 2.6 x86 too (it doesn't even
> > change between different kernel compiles).
> 
> Actually, the 4G patch pushes vsysenter down a page, and glibc seems to
> handle this properly.

this is nice for x86 indeed. This has never been a concern in x86-64
since there's no need to move the address space there.

so in short this means 64G machines using 4:4 will need two tries to get
to the root shell, every bother box will succeed at the first try ;).
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