Joerg Roedel wrote: > On Fri, Sep 14, 2007 at 11:57:59AM +0400, Manu Abraham wrote: >>>>> What do you think about IOMMU? >>>>> >>>>> >>>> Just because AMD or INTEL want to invent some whizzy new technology it >>>> doesn't say anything about the TV card development and retail business. >>>> Intel and AMD have teams of Linux engineers helping operating system >>>> developers bring their ideas and technologies to new platforms. That's a >>>> million miles away from any of the TV board vendors I know of, who have >>>> little or NO fulltime linux developers and consider the < 5% market >>>> fringe at best. >>>> >>> it helps to virtualize devices and introduces newer features for that. >>> Some interesting projects could be derrived out of that, there are >>> quite a few interesting papers floating around how drivers could be >>> handled in future. >>> >> IOMMU can be considered similar to the AGP GART, which is similar, >> remapping the Addresses, as far as i understand. > > Common new IOMMUs have only very few in common with the AGP GART. In > fact, with current modern IOMMU hardware it will be possible to > implement secure userspace device drivers that are even able to do DMA. > This is not possible with the GART. > >> Though you get a physical to virtual translation, what about interrupts, > > Modern IOMMUs are able to remap interrupts. This will solve the problem > with PCI interrupt sharing. What CPU's are we talking about ? Thanks for the explanation. Manu _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
