[Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces.

From: David S. Miller <davem_at_redhat.com>
Date: 2003-05-16 10:59:23
   From: Colin Ngam <cngam@sgi.com>
   Date: Thu, 15 May 2003 19:36:55 -0500
   I do not believe it is within spec to perform DAC when the
   Upper 32bits are 0s.

That is an illogical requirement in that it means PCI-X mode is
illegal in the presence of such addresses.  It means that PCI-X
devices cannot work in x86 systems with <4GB of memory which is
obviously not true.
Received on Thu May 15 18:02:21 2003

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