linux-kernel - Re: [PATCH] i386: improve double fault handling

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Date:	Mon, 28 Jul 2008 10:02:30 -0400
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jan Beulich <jbeulich@...ell.com>
CC:	Ingo Molnar <mingo@...e.hu>, Joerg Roedel <joro@...tes.org>,
	Andi Kleen <andi@...stfloor.org>, tglx@...utronix.de,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i386: improve double fault handling

Jan Beulich wrote:
> 
>> Firstly, 64-bit does not use a task gate for double faults anymore. (but 
>> uses a separate IST stack for double faults)
> 
> Sure - because there are no task gates on 64-bit.
> 

What we're doing here is really using task gates to emulate IST anyway.

	-hpa
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