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Date: Sun, 22 Dec 2002 11:13:38 +0100 (CET)
From: Ingo Molnar <mingo@elte.hu>
Reply-To: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Jamie Lokier <lk@tantalophile.demon.co.uk>,
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Subject: Re: Intel P6 vs P7 system call performance
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On Sat, 21 Dec 2002, Linus Torvalds wrote:

> Saving and restoring eflags in user mode avoids all of these
> complications, and means that there are no special cases. None. Zero.
> Nada.

and i'm 100% sure the more robust eflags saving will also avoid security
holes. The amount of security-relevant complexity that comes from all the
x86 features [and their combinations] is amazing.

	Ingo

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