From: Jeff Garzik <jgarzik@mandrakesoft.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Edward Spidre <beamz_owl@yahoo.com>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Possible PCI subsystem bug in 2.4
Date: Thu, 03 May 2001 14:22:03 -0400 [thread overview]
Message-ID: <3AF1A1CB.527747F1@mandrakesoft.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0105031106030.30573-100000@penguin.transmeta.com>
Linus Torvalds wrote:
> The question is mainly _which_ power of two.
>
> I don't think we can round up infinitely, as that might just end up
> causing us to not have any PCI space at all. Or we could end up deciding
> that real PCI space is memory, and then getting a clash when a real device
> tries to register its bios-allocated area that clashes with our extreme
> rounding.
>
> I suspect it would be safe to round up to the next megabyte, possibly up
> to 64MB or so. But much more would make me nervous.
>
> Any suggestions?
Is there any chance you could simply test the bottom of PCI address
space? If you could set up the x86 to trap non-DRAM read/writes
temporarily, you could tell where useable DRAM area stops.
--
Jeff Garzik | Game called on account of naked chick
Building 1024 |
MandrakeSoft |
next prev parent reply other threads:[~2001-05-03 18:22 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20010503140318.7583.qmail@web10704.mail.yahoo.com>
2001-05-03 17:08 ` Possible PCI subsystem bug in 2.4 Linus Torvalds
2001-05-03 17:51 ` Alan Cox
2001-05-03 18:12 ` Linus Torvalds
2001-05-03 18:22 ` Jeff Garzik [this message]
2001-05-03 18:31 ` Alan Cox
2001-05-04 15:41 ` Eric W. Biederman
2001-05-04 15:52 ` Alan Cox
2001-05-04 16:13 ` Eric W. Biederman
2001-05-04 17:04 ` Alan Cox
2001-05-05 5:41 ` Eric W. Biederman
2001-05-08 16:01 ` Maciej W. Rozycki
2001-05-09 15:45 ` Eric W. Biederman
2001-05-04 17:44 ` Linus Torvalds
2001-05-05 5:30 ` Eric W. Biederman
2001-05-05 7:17 ` Alan Cox
2001-05-04 11:34 ` Rogier Wolff
[not found] <20010503191655.67673.qmail@web10701.mail.yahoo.com>
2001-05-03 19:28 ` Linus Torvalds
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