From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: David Fries <david@fries.net>
Cc: Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org, Pavel Machek <pavel@ucw.cz>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [PATCH] Fix i486 suspend to disk CR4 oops
Date: Mon, 18 Aug 2008 15:38:09 +0100 (BST) [thread overview]
Message-ID: <Pine.LNX.4.55.0808181524460.29123@cliff.in.clinika.pl> (raw)
In-Reply-To: <20080818125803.GC17528@spacedout.fries.net>
On Mon, 18 Aug 2008, David Fries wrote:
> That's what I get for reading the Intel instruction set reference,
> "The CR4 register was added to the Intel Architecture beginning with
> the Pentium processor."
Indeed. It started with the Pentium and some of the i486
models/steppings that were released after the Pentium got the CR4 register
implemented too. These include at the least the write-back enhanced
versions of the iDX2 and iDX4 processors as well later steppings of the
i486SX, which I encountered myself. There could be others -- iSX2?
Unfortunately as usually with Intel you have to read all the documents
they release to hope to get a full image and even then you'll probably
come out confused and with bits of data missing -- if in doubt, check the
silicon: it has the most definite information. However these additions
were actually documented quite well in the respective i486-class processor
datasheets -- IIRC Intel have released a combined version at one point.
I am not sure whether it has ever been available on-line.
Maciej
next prev parent reply other threads:[~2008-08-18 14:39 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-18 4:03 [PATCH] Fix i486 suspend to disk CR4 oops David Fries
2008-08-18 4:14 ` Maciej W. Rozycki
2008-08-18 4:35 ` H. Peter Anvin
2008-08-18 6:04 ` Andi Kleen
2008-08-18 6:34 ` H. Peter Anvin
2008-08-18 6:42 ` Andi Kleen
2008-08-18 6:41 ` Ingo Molnar
2008-08-18 6:45 ` H. Peter Anvin
2008-08-18 9:15 ` Pavel Machek
2008-08-18 10:16 ` Rafael J. Wysocki
2008-08-18 12:58 ` David Fries
2008-08-18 13:25 ` Ingo Molnar
2008-08-18 14:41 ` Maciej W. Rozycki
2008-08-18 14:38 ` Maciej W. Rozycki [this message]
2008-08-18 22:04 ` Pavel Machek
2008-08-18 22:10 ` H. Peter Anvin
2008-08-18 15:24 ` Dave Jones
2008-08-18 16:04 ` Lennart Sorensen
2008-08-18 17:17 ` Dave Jones
2008-08-18 17:32 ` H. Peter Anvin
2008-08-18 22:02 ` Pavel Machek
2008-08-19 3:37 ` [PATCH] i486 CR4 oops, no_console_suspend David Fries
2008-08-19 9:34 ` Ingo Molnar
2008-08-19 16:07 ` H. Peter Anvin
2008-08-21 4:17 ` David Fries
2008-08-21 5:37 ` H. Peter Anvin
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