On Thursday, 29 March 2007 00:16, Larry Finger wrote: > Michael Buesch wrote: > > On Wednesday 28 March 2007 23:43, Larry Finger wrote: > >>>> As a result, every driver for > >>>> hardware with less than 32-bit DMA addressing has to address (pun > >>>> intended) the problem. We will > >>>> probably be fighting the problem again when > 4 GB RAM computers become > >>>> common and 32 bits are not > >>>> enough to address all of memory. > >>> Nope, see Johannes' mail. > >> Yes, if an IOMMU is included, but why don't we have them now on our 64-bit > >> processors? > > > > Don't we? I thought all 64bit machines that support >4G Ram do have an > > IOMMU. > > My AMD Turion 64 X2 processor can address more than 4 GB RAM, but AMD's IOMMU > has not yet been > released.
Er, are you sure? AFAIR all of the K8 CPUs have something called GART IOMMU, which is not a "real" IOMMU, but still it can do its job (to a limited extent, though). Greetings, Rafael _______________________________________________ Bcm43xx-dev mailing list [email protected] https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
