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No, it's completely unrelated.

No, it's completely unrelated.

Posted Jun 4, 2009 12:48 UTC (Thu) by gwolf (subscriber, #14632)
In reply to: No, it's completely unrelated. by drag
Parent article: Xen again

> Heh. KVM has paravirt drivers that are built into the kernel right now.

Yes, and that's good - I use KVM with paravirt network and disk devices for Windows hosts. Still, many things (i.e. memory access, real CPU mapping, even the kind of architecture the guests report as having) have to be emulated. Paravirt devices are a great boost, though - And by being much simpler, say, than hardware-specific drivers, I am also reducing the most common cause for Windows' instability.

Now, both with Xen and with KVM (and I'd expect with any other virtualization technology) you can forward a real device - Just remove support for it on the host (or Dom0) kernel and ask the virtualizer to forward the needed interrupts/mapped memory space/bus address, and you have it natively inside. Of course, you lose the ability to perform live migrations - But you cannot always win! :)

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No, it's completely unrelated.

Posted Jun 10, 2009 17:37 UTC (Wed) by tmassey (guest, #52228) [Link]

You say you have virtualized *disk* drivers for Windows for KVM? I'm aware of the paravirt network drivers, but I've looked repeatedly for block drivers. They've always been 'planned for the future', but I've not been able to find them.

Where would I get paravirt Windows drivers for KVM?

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