Date: Thu, 25 Oct 2007 13:50:55 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: ivoras@freebsd.org Subject: Re: USB vs PAE Message-ID: <200710251350.56208.jhb@freebsd.org> In-Reply-To: <20071024.150639.63053209.imp@bsdimp.com> References: <0F0DFE71-3A14-4A3D-BBF8-6FAEA9245F3A@gid.co.uk> <F007A7E8-39A5-4553-A439-10FD3EA3E0E3@gid.co.uk> <20071024.150639.63053209.imp@bsdimp.com>
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On Wednesday 24 October 2007 05:06:39 pm M. Warner Losh wrote: > In message: <F007A7E8-39A5-4553-A439-10FD3EA3E0E3@gid.co.uk> > Bob Bishop <rb@gid.co.uk> writes: > : Hi, > : > : On 23 Oct 2007, at 20:45, Ivan Voras wrote: > : > : > Bob Bishop wrote: > : >> Hi, > : >> > : >> The whole USB kit and caboodle is nodevice'd out in the PAE > : >> config. Can > : >> anyone give a succinct summary of what needs fixing? (EVERYTHING! > : >> is an > : >> acceptable answer) Thanks > : > > : > I'm running USB keyboard and mouse under PAE without problems. Don't > : > know about other USB devices. AFAIK everything that is 64-bit clean > : > (i.e. works on AMD64 and other architectures) should work ok with PAE, > : > so try compiling it in and see for yourself. > : > : > : Yes. Keyboard and umass (CDROM and memory stick) seem to work here on > : 6.2R. Thanks! > > In 6.x the big problem is busdma support. USB doesn't use it quite > right, which means that buffers that it uses must be in the lower > 4GB. If not, then it won't work. > > Current does proper scatter/gather, so should work without issue. Ah, ok. How does USB on 6.x work with amd64? Also, any idea when the USB stuff will be MFC'd to 6? -- John Baldwin
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