Date: Fri, 7 Nov 2008 17:07:44 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-current@freebsd.org Cc: Jeremy Chadwick <koitsu@freebsd.org> Subject: Re: Kernel panic when copying data to umass device (USB4BSD) Message-ID: <200811071707.45823.hselasky@c2i.net> In-Reply-To: <20081107082740.GA1334@icarus.home.lan> References: <20081107082740.GA1334@icarus.home.lan>
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On Friday 07 November 2008, Jeremy Chadwick wrote: > http://www.malkavian.com/~jdc/usb2_da0_crash.jpg Hi Jeremy, This issue has already been reported. It has to do with busdma. I will try to verify the busdma path when bounching is enabled. I think I can simulate this on my system by lowering the physical DMA limit. I have not tested on systems with more than 4GB of ram. --HPS
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