Re: [PATCH] Intel x86-64 support merge

[Jes Sorensen]

>>>>> "Jeff" == Jeff Garzik <jgarzik@xxxxxxxxx> writes:

Jeff> Bill Davidsen wrote:
>> Doesn't need it? Does that mean the Win64 uses bounce buffers for
>> everything? Or am I totally misreading this?

Jeff> Well, for 32-bit PCI hardware on a 64-bit OS, you pretty much
Jeff> have to bounce, without an IOMMU.

Jeff> I doubt Win64 bounces for 64-bit PCI hardware, but who knows...

Just a shame they don't seem to care about performance and allowing
one to issue SAC cycles when possible. Oh well, guess one just has to
buy a real computer.

Cheers,
Jes
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