On 2015-07-29 10:17, Paolo Bonzini wrote: > > > On 29/07/2015 02:47, Andy Lutomirski wrote: >>>> If new kernels ignore the IOMMU for devices that don't set the flag >>>> and there are physical devices that already exist and don't set the >>>> flag, then those devices won't work reliably on most modern >>>> non-virtual platforms, PPC included. >>> >>> Are there many virtio physical devices out there ? We are talking about >>> a virtio flag right ? Or have you been considering something else ? >> >> Yes, virtio flag. I dislike having a virtio flag at all, but so far >> no one has come up with any better ideas. If there was a reliable, >> cross-platform mechanism for per-device PCI bus properties, I'd be all >> for using that instead. > > No, a virtio flag doesn't make sense. That will create the risk of subtly breaking old guests over new setups. I wouldn't suggest this. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
