[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] iommu=dom0-passthrough behavior
>>> On 16.11.12 at 10:43, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> wrote: >> So after I implemented a draft patch for this yesterday, my attention now >> was directed to phantom functions permitted by the PCIe spec (of which I >> was entirely unaware so far). While Linux to date doesn't enable them, I > can't >> exclude that the BIOS might be (requested respective data to find out). And >> even if it doesn't, adding proper support for that functionality, and then >> putting a quirk on top of that would seem the much cleaner solution (pretty >> likely me_wifi_quirk() could then also be made fit in there). >> >> Thoughts? > Agree, Xen doesn't have phantom functions supported with VT-d, so it is > better to create a quirk to fix such issues. Sorry, no, we should add phantom function support (and not only to VT-d, but to the generic IOMMU code), and use that (if necessary, i.e. if the device in question doesn't have phantom functions turned on) to base a workaround on. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |