On Wed, 2018-05-09 at 09:26 -0600, Keith Busch wrote: > On Tue, May 08, 2018 at 09:38:28PM -0700, Christoph Hellwig wrote: > > On Tue, May 08, 2018 at 10:00:22AM -0600, Keith Busch wrote: > > > Devices with slow interrupt handlers are significantly harming > > > performance > > > when their interrupt vector is shared with a fast device. This > > > patch > > > creates a class code white list for devices with known fast > > > interrupt > > > handlers, and all other devices will share a single vector so > > > they don't > > > interfere with performance. > > > > > > At the moment, only the NVM Express class code is on the list, > > > but more > > > may be added if VMD users desire to use other low-latency devices > > > in > > > these domains. > > > > I think this is far too much of a hack. Just don't use VMD if > > your > > care about performance. > > I'm not aware of an easier way you can direct-assign an entire PCIe > domain > to a virtual machine. :) It's fine with me Acked-by: Jon Derrick: <jonathan.derrick@xxxxxxxxx>
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