Re: Kernel panic on amd64Netbsd 4.0

On Thu, 25 Sep 2008, Manuel Bouyer wrote:
> On Thu, Sep 25, 2008 at 02:46:06PM -0700, Paul Goyette wrote:
>>> at last for i386; never tested it on amd64.
>>
>> I use
>>
>> 	options         PHYSMEM_MAX_ADDR=4096
>>
>> on my amd64 with k8GB and it avoids numerous random crashed that I'd
>> been having.
>>
>> I was told at one point that there was a problem with bounce buffers
>> over the 4GB limit, but then was told that that problem didn't exist.
>> So, I'm not sure what the actual problem is, but limiting to 4GB does
>> avoid the crashing.
>
> There are no general issues with bounce buffers, AFAIK. But there
> may be issues with individual drivers not doing the bus_dma(9)
> thing properly.

Are there any known guilty drivers to be either avoided or fixed?

-- 
Stephen