From: "H. Peter Anvin" <hpa@zytor.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Jan Beulich <jbeulich@novell.com>,
Andi Kleen <andi@firstfloor.org>,
tglx@linutronix.de, linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Joerg Roedel <joro@8bytes.org>
Subject: Re: [PATCH] i386: improve double fault handling
Date: Mon, 28 Jul 2008 09:45:20 -0400 [thread overview]
Message-ID: <488DCD70.4020003@zytor.com> (raw)
In-Reply-To: <20080728134252.GI5515@elte.hu>
Ingo Molnar wrote:
>
> Secondly, task gates are really a relic that should not be proliferated.
> Besides the complications in virtualized environments (if more common
> things like Big Real Mode are not supported well in virtual mode what do
> we expect of more esoteric features as task gates?) it does not get
> nearly as much testing on real silicon as other, more mainstream CPU
> features.
>
I think that using it as a bailout mechanism is going to remain
supported and tested. It's just never going to be fast.
-hpa
next prev parent reply other threads:[~2008-07-28 13:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-18 12:30 [PATCH] i386: improve double fault handling Jan Beulich
2008-07-18 23:24 ` H. Peter Anvin
2008-07-21 8:54 ` Jan Beulich
2008-07-21 11:05 ` Ingo Molnar
2008-07-22 10:13 ` Jan Beulich
2008-07-28 13:42 ` Ingo Molnar
2008-07-28 13:45 ` H. Peter Anvin [this message]
2008-07-28 13:59 ` Jan Beulich
2008-07-28 14:02 ` H. Peter Anvin
2008-07-28 16:28 ` Ingo Molnar
2008-07-28 22:00 ` Chuck Ebbert
2008-07-31 10:46 ` Ingo Molnar
2008-07-23 21:43 ` Joerg Roedel
2008-07-24 7:08 ` Jan Beulich
2008-07-24 13:24 ` H. Peter Anvin
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