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RE: [Xen-devel] allocating AGP aperture memory

  • To: "Langsdorf, Mark" <mark.langsdorf@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
  • Date: Fri, 21 Oct 2005 09:12:24 +0100
  • Delivery-date: Fri, 21 Oct 2005 08:09:50 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcXUItEVdqWcbj10TmOmktd1+s3AmQADf3OQAAEy7AAAEAj1QABLsk9wABx3AcA=
  • Thread-topic: [Xen-devel] allocating AGP aperture memory

> At some point I need to be able to remap the actual, physical 
> e0000000 address range into something locally addressable.  
> ioremap_cache is failing, though that might be because of the 
> page reserve collision above.

I haven't looked at the code, but why would you want to map the GART
aperture into kernel virtual address space? The CPU shouldn't need to
access stuff through the remapped region -- its PCI DMAs that should be
using it.


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