On Thu, Apr 01, 2010 at 12:24:45PM -0700, Tom Lyon wrote:
> For my purposes, collapsing all the MSI-Xs into one MSI-look-alike is fine,
> because I'd be using MSI anyways if I could. The weird Intel 82599 VF only
> supports MSI-X.
For KVM this is not fine. The device should look in the guest as it
looks in the host. Some devices might only support MSI-X and thus the
drivers for it only search for MSI-X and get confused when they only
find MSI.
> So one big question is - do we expand the whole UIO framework for KVM
> requirements, or do we split off either KVM or non-VM into a separate driver?
> Hans or Greg - care to opine?
We should definitly work towards a single implementation. The KVM device
passthrough requirements are not very different from that of userspace
device access.
Joerg
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