amd64/87977 : [busdma] [panic] amd64 busdma dflt_lock called (by ata) if physmem>4G

[Thomas Hurst]

The following reply was made to PR amd64/87977; it has been noted by GNATS.

From: Thomas Hurst <tom at hur.st>
To: bug-followup at FreeBSD.org
Cc: jc at oxado.com
Subject: Re: amd64/87977 : [busdma] [panic] amd64 busdma dflt_lock called (by ata) if physmem>4G
Date: Tue, 27 Dec 2005 15:52:26 +0000

 I see this with RELENG_6 on a Tyan S2895 using the on-board nForce 4
 SATA with >2 disks and 4G of memory.  A simple gmirror load across 3 or
 more disks is sufficient to cause a panic.
 
 Are there any suggested workarounds beyond not using 4G or finding a
 controller that doesn't use ata(4)?
 
 -- 
 Thomas 'Freaky' Hurst
     http://hur.st/