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[Xen-devel] Re: [ivtv-devel] Problems loading ivtv in Xen - DMA issues?

  • To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • From: David Muench <davemuench@xxxxxxxxx>
  • Date: Fri, 15 Jul 2005 08:57:34 -0400
  • Cc: xen-devel List <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Fri, 15 Jul 2005 12:59:35 +0000
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On 7/15/05, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
> Well, I think there is probably a grey area over what accesses the
> kernel can make to memory that it currently has mapped by
> dma_map_single.... I think I will just remove the direction checks from
> the sync functions, leave them in the map/unmap functions, and hope
> that suffices to get most drivers working.
> Thanks for your testing efforts on this!

No problem, thanks very much for all your help. It still amazes me
that a Celeron in my basement can have 2 domains running web servers,
1 doing dns/dhcp/tftp type services, a mysql domain, a domain running
Asterisk to control all my VOIP phones, and a mythtv backend domain
that can simultaneously record 3 DVD quality mpeg-2 streams off of
directv while playing back to (at least) two frontend machines in my
house. All thanks to Xen. And I still have another 200 meg of
unallocated ram, I wonder what I can do with that.. :)


David Muench - davemuench@xxxxxxxxx
Jabber ID: dave@xxxxxxxxxxxxxxxxxxxx

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