[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Xen support for PCI-SIG I/O Virtualization
> Let me know if you want to know more. Curious if your patches have any multi-root logic.. Or if only SR. Do you have specific smart NICs that you recommend that work with your patches/Xen? thanks, Tom > -----Original Message----- > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx > [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Greg Law > Sent: Wednesday, January 16, 2008 11:56 AM > To: Masroor Vettuparambil > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx > Subject: Re: [Xen-devel] Xen support for PCI-SIG I/O Virtualization > > Masroor Vettuparambil wrote: > > Hi, > > > > what is the current support of Xen for PCI-SIG IOV SR/MR spec? > > I have a PCIe device which supports multiple virtual functions(VF), > > and want to enable direct assignment of each of these VFs > to different domUs. > > So is it possible to assign a PCIe virtual channel/function to domU > > directly? > > Have you seen the work we did recently to allow smart NIC's > to be accessed directly from the guest? Essentially your > "accelerated" driver is a plugin to netfront (which knows how > to send/receive packets with safe direct access hardware to > the NIC), and a plugin for netback which deals with the > privileged part of programming the NIC (e.g. creating virtual > devices and handing them out to the guests as appropriate). > Among other things, this architecture means you can support > migrating to machines with no smart hardware, or a different > smart NIC. > > Let me know if you want to know more. > > As far as programming the IOMMU goes, I've seen various > patches flying around so I know work has been done here, but > I don't know any more than that. > > Cheers, > > Greg > -- > Greg Law +44 1223 518 040 > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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