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Date: Fri, 27 Dec 2002 18:05:35 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Linus Torvalds <torvalds@transmeta.com>
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       Ulrich Drepper <drepper@redhat.com>, bart@etpmod.phys.tue.nl,
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       Matti Aarnio <matti.aarnio@zmailer.org>, hugh@veritas.com,
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Subject: Re: Intel P6 vs P7 system call performance
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Linus Torvalds wrote:
> Note that that was true even before this patch - you cannot use glibc
> without having the default DS/ES settings anyway. I not only checked with
> Uli, but gcc simply cannot generate code that has different segments for
> stack and data, so if you have non-flat segments you had to either

More importantly, SYSENTER hardcodes flat layout.

	-hpa


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