Jeremy Fitzhardinge wrote: > Zachary Amsden wrote: >> This patch provides hypercalls for the i386 port I/O instructions, >> which vastly helps guests which use native-style drivers. For certain >> VMI workloads, this provides a performance boost of up to 30%. We >> expect KVM and lguest to be able to achieve similar gains on I/O >> intensive workloads. > > Two comments: > > - I should dust off my "break up paravirt_ops" patch, and this would fit > nicely into it (I think we already discussed this) > > - What happens if you *don't* want to pv some of the io instructions? > What if you have a device which is directly exposed to the guest?
If one could directly expose a device to the guest, this feature could be extremely useful for me. Is it possible? How would it manage to handle the DMA bus mastering? James - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
