On 2016-02-19 12:39, Peter Xu wrote: > On Fri, Feb 19, 2016 at 11:15:06AM +0100, Jan Kiszka wrote: >> On 2016-02-19 10:58, Paolo Bonzini wrote: >>> I think you're not verifying the SVT, SID and SQ fields in the IRTE. >> >> Exactly. >> >>> >>> The source ID can be passed to the IOMMU using the MemTxAttrs mechanism. >> >> Ah, that's a nice new channel, resolving the need for using/passing >> source-specific target memory regions for this. At least for PCI >> devices, it should already be populated with the required information, >> others (IOAPIC, HPET) probably require additional work to pass what I >> defined as Q35_PSEUDO_BUS_PLATFORM, Q35_PSEUDO_DEVFN_IOAPIC/HPET. > > Jan, Rita, Paolo, > > One more thing to ask: do we have any plan to move on the work to > support vhost/pass-through devices? Do you think we need these too?
We need them eventually as well, but - unless some of them just work by chance (unlikely) - that was not in the scope if the ongoing project, rather a potential add-on for later. Jan
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