amd64/87977 : [busdma] [panic] amd64 busdma dflt_lock called
(by ata) if physmem>4G
bra at fsn.hu
Tue Dec 27 08:57:04 PST 2005
Thomas Hurst wrote:
> 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)?
I believe this is fixed in CURRENT. On 6-STABLE you can set hw.physmem
to use a smaller amount of memory or switch to the ata driver before
Attila Nagy e-mail: Attila.Nagy at fsn.hu
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