Messages in this thread | | | Subject | Re: [PATCH] Xen/i386 cleanups - AGP bus/phys cleanups | From | Alan Cox <> | Date | Wed, 16 Mar 2005 17:40:43 +0000 |
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On Mer, 2005-03-16 at 14:31, Christoph Hellwig wrote: > It's bogus either way. You must never use virt_to_phys or virt_to_bus > for bus address. For systems with an IOMMU there's no 1:1 mapping.
The AGPGART _is_ the IOMMU.
Alan
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