> That sounds like something worth exploring at least, I didn't know > about that kernel build option until now :-) It sounds like it ought > to be enough to let us test the NUMA topology handling, CPU pinning > and probably huge pages too.
Okay. I've been vaguely referring to this as a potential test vector, but only just now looked up the details. That's my bad :) > The main gap I'd see is NUMA aware PCI device assignment since the > PCI <-> NUMA node mapping data comes from the BIOS and it does not > look like this is fakeable as is. Yeah, although I'd expect that the data is parsed and returned by a library or utility that may be a hook for fakeification. However, it may very well be more trouble than it's worth. I still feel like we should be able to test generic PCI in a similar way (passing something like a USB controller through to the guest, etc). However, I'm willing to believe that the intersection of PCI and NUMA is a higher order complication :) --Dan
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