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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
Date: Mon, 25 Aug 2003 06:56:42 +0100	[thread overview]
Message-ID: <20030825055642.GF20529@mail.jlokier.co.uk> (raw)
In-Reply-To: <16197.14968.235907.128727@gargle.gargle.HOWL>

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

  parent reply	other threads:[~2003-08-25  5:56 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-08-21 20:41 Jim Houston
2003-08-21 21:32 ` Mikael Pettersson
2003-08-22  2:18   ` [PATCH2] " Jim Houston
2003-08-25  5:56   ` Jamie Lokier [this message]
2003-08-25  6:09   ` [PATCH] " Jamie Lokier
2003-09-03 12:50     ` Pavel Machek
2003-09-08 14:05       ` Jamie Lokier
2003-08-25  4:05 ` Jamie Lokier
2003-08-25  4:14   ` Jakob Oestergaard
2003-08-25  5:50     ` Jamie Lokier
2003-08-25  6:29       ` Jamie Lokier
2003-08-25  7:49         ` Jakob Oestergaard
2003-08-25 18:15         ` Jim Houston
2003-08-26 12:26   ` Richard Curnow
2003-08-27 14:01     ` Jamie Lokier
2003-08-27 14:23       ` Richard Curnow
2003-08-27 14:25       ` dl-ipaddr
2003-08-27 15:15       ` Stan Bubrouski
2003-08-27 16:02       ` Pasi Savolainen

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