Il 26/04/2013 10:46, Alexey Kardashevskiy ha scritto: > On 04/26/2013 06:44 PM, Paolo Bonzini wrote: >> Il 25/04/2013 08:36, David Gibson ha scritto: >>> On Wed, Apr 24, 2013 at 06:33:33PM +0200, Paolo Bonzini wrote: >>>> Il 24/04/2013 17:12, Alex Williamson ha scritto: >>>>>>> At the moment, vfio maintains a global list of containers >>>>>>> that are assumed to be more or less interchangeable, since >>>>>>> they are all set up with a MemoryListener to have all of >>>>>>> system memory mapped. However, that only makes sense if >>>>>>> all the containers are used on devices which really do >>>>>>> expect a dma address space identical to system memory. >>>>>>> >>>>>>> This patch moves towards that by making the list of >>>>>>> containers per DMAContext (which corresponds to a dma >>>>>>> address space) instead of global. >>>>> This seems like an unnecessary intrusion into common code. Why >>>>> not create a vfio specific list of dma objects, each with a >>>>> list of containers? Thanks, >>>> >>>> Yeah, I suggest that this is re-evaluated on top of the iommu >>>> patches. >>> >>>> You can find them at git://github.com/bonzini/qemu.git, branch >>>> iommu. It seems to work with pseries, at least my guest crashes >>>> at the same place with and without. USB works, and so do VGA and >>>> spapr-vscsi. >>> >>> Ok, I'll have a look when I get a chance. Any guesses as to when >>> they might reach mainline? >> >> If I get your Tested-by, early in 1.6. > > Emulated PCI works on ppc64/spapr so far.
What about VIO? Doesn't it go through the IOMMU as well? I'm sure you can test it more than I did (it did break in Avi's original patches, so it must not be that bad...). Paolo
