Messages in this thread | | | From | Jesse Barnes <> | Subject | Re: 32-bit dma allocations on 64-bit platforms | Date | Thu, 24 Jun 2004 09:48:07 -0400 |
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On Thursday, June 24, 2004 2:18 am, Arjan van de Ven wrote: > What is the problem again, can't the driver us the dynamic pci mapping > API which does allow more memory to be mapped even on crippled machines > without iommu ? > And isn't this a problem that will vanish since PCI Express and PCI X > both *require* support for 64 bit addressing, so all higher speed cards > are going to be ok in principle ?
Well, PCI-X may require it, but there certainly are PCI-X devices that don't do 64 bit addressing, or if they do, it's a crippled implementation (e.g. top 32 bits have to be constant).
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