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From: John Baldwin <jhb@freebsd.org>
To: Oleg Sharoiko <os@rsu.ru>
Date: Thu, 9 Mar 2006 11:13:35 -0500
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Cc: freebsd-scsi@freebsd.org, Andrey Beresovsky <and@rsu.ru>
Subject: Re: Boot hangs on ips0: resetting adapter,
	this may take up to 5 minutes
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On Thursday 09 March 2006 11:10, Oleg Sharoiko wrote:
> 
> Update: custom amd64 kernels with reduced set of devices work. Tested 
> RELENG_6 and HEAD both SMP and UP. Should I try to find a pair of kernels 
> similar one to another, one of which would work and another wouldn't?

Yes, please!

> I've also discovered that it looks like isp driver in RELENG_6 is not safe 
> with more that 4Gb of RAM. Under moderate load with 6G I get
> 
> "isp0: deferred dma allocation not supported"
> 
> which leads to various errors and finally to kernel panic. The same load 
> never created problems with hw.physmem=2g and hw.physmem=4g under RELENG_6 
> and with 6G under HEAD.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org