lkml.org 
[lkml]   [2000]   [Dec]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Transmeta and Linux-2.4.0-test12-pre3
Date
Followup to:  <200012020409.UAA04058@adam.yggdrasil.com>
By author: "Adam J. Richter" <adam@yggdrasil.com>
In newsgroup: linux.dev.kernel
>
> Well, alas, it appears that linux-2.4.0-test12-pre3 freezes hard
> while reading the base address registers of the first PCI device
> (the "host bridge"). Actually, I think the problem is some kind of
> system management interrupt occuring at about this time, since the
> exact point where the printk's stop gets earlier as I add more
> printk's. With few printk's the printk's stop while the 6th base
> address configuration register is being read; with more printk's it
> stops at the second one, and it will stop in different places with
> different boots, at least with the not-quite-stock kernels that I usually
> use. Also, turning off interrupts during this code has no effect, so
> I do not think it is directly caused by the something in the PictureBook
> pepperring the processor with unexpected interrupts (I thought it might have
> to do with the USB-based floppy disk).
>

It's a slight bug in the Linux PCI probing code that triggers when
there is ongoing DMA activity during PCI probing. Linus already have
a fix for it; I expect that it will be in the next prepatch.

-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:51    [W:0.098 / U:0.644 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site