Message-ID: <4325B378.9080000@aknet.ru>
Date: Mon, 12 Sep 2005 20:57:28 +0400
From: Stas Sergeev <stsp@aknet.ru>
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To: Jan Beulich <JBeulich@novell.com>
Cc: vandrove@vc.cvut.cz, linux-kernel@vger.kernel.org
Subject: Re: [patch] x86: fix ESP corruption CPU bug (take 2)
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Hi.

Jan Beulich wrote:
>>Do you mean, eg, this?
>>http://www.ussg.iu.edu/hypermail/linux/kernel/0409.2/1533.html 
> No, I don't. This talks about going through ring 1 intermediately,
> which isn't what I have in mind.
Well, like I said, 2 approaches do use the
kernel stack for the 16bit stack. One approach
uses ring-1 trampoline, the other one doesn't.
The posting I pointed to, was explicit about
the stack usage, but as for the ring-0 approach
while still using the kernel stack - here it is:
http://www.ussg.iu.edu/hypermail/linux/kernel/0410.0/1402.html

Is this what you mean? This is pretty much all
about it, the third approach is in the kernel,
and there were no more, even under discussion.

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