Date: Mon, 25 Aug 2003 06:56:42 +0100
From: Jamie Lokier <jamie@shareable.org>
To: Mikael Pettersson <mikpe@csd.uu.se>
Cc: jim.houston@comcast.net, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Pentium Pro - sysenter - doublefault
Message-ID: <20030825055642.GF20529@mail.jlokier.co.uk>
References: <1061498486.3072.308.camel@new.localdomain> <16197.14968.235907.128727@gargle.gargle.HOWL>
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Mikael Pettersson wrote:
>  > The logic above is exactly what Intel says to do in "IA-32 Intel®
>  > Architecture Software Developer's Manual, Volume 2: Instruction Set
>  > Reference" on page 3-767.  It also says that sysenter was added to the
>  > Pentium II.
> 
> I double-checked AP-485 (24161823.pdf, the "real" reference to CPUID),
> and it says (section 3.4) that SEP is unsupported when the signature
> as a whole is less that 0x633. This means all PPros, and PII Model 3s
> with steppings less than 3.

So (double-checking) the pseudo-code in "IA-32: Intel Architecture
Software Development Manual, Volume 2: Instruction Set Reference" is buggy?

Oh my!  Perhaps there are other bugs in that behemoth of a manual, too :/

-- Jamie
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