Subject: Re: port-sparc64/29473: nfs + bus_dmamap_load_mbuf often results in a hang
To: john heasley <heas@shrubbery.net>
From: Jaromir Dolecek <jdolecek@NetBSD.org>
List: netbsd-bugs
Date: 02/24/2005 15:48:29
On Wed, Feb 23, 2005 at 12:28:39PM -0800, john heasley wrote:
> > Is kernel modified?
>
> Not on this box, current as of ~this last sunday. I noticed this happen
> a long time ago, circa 1.6Z, but set-up the hme and forgot to report or
> return to it ... until last week.
Could this be the well-known sparc64 PCI DMA bug? hme0 (or other
adapters using bus_dmamap_load_mbuf()) used to lockup the kernel regularily
under load.
Jaromir
--
Jaromir Dolecek <jdolecek@NetBSD.org> http://www.NetBSD.cz/
-=- We can walk our road together if our goals are all the same; -=-
-=- We can run alone and free if we pursue a different aim. -=-