On 2011-09-06 10:12, Michael S. Tsirkin wrote: > On Tue, Sep 06, 2011 at 10:52:41AM +0300, Avi Kivity wrote: >>> >>> BTW, the same is also true for that optional per-vector masking of >>> legacy MSI. Are there devices in the field that actually support this? I >>> haven't found one so far and tend to consider this feature not worth >>> implementing. >> >> Don't know. I don't like implementing features on the basis of bug >> reports, though. On the other hand we can't really test it without >> a real device. > > Linux will use this capability if present. So > we could add support for an emulated device (e.g. e1000), > then test with nested virt once iommu emulation lands :) Yeah, would be kind of cool. Still, I would feel better having it tested against a real silicon as well. Also to prove that there is a real need. So, in case someone stumbles for such a device (bit 8 set in MSI control word), please let us know! Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
