On Wed, Sep 10, 2008 at 03:48:04PM +0800, Zhao, Yu wrote: > >I agree with this improvement to the help text. But a further question > >is whether ARI even merits its own user-visible config option. Is it > >worth having yet another choice for users? When would someone want ARI > >but not SR-IOV? > > ARI is an independent PCI Express extended capability. Multi-function devices supporting this capability may use it to track dependency between different functions and assign function group numbers to these functions. > > Another reason to keep this separated with SR-IOV is that after ARI is enabled, PCI Express Endpoint may have non-zero slot number (device number), which is different from traditional PCI Express Endpoint. Let me ask the question slightly differently: Why would someone want to turn the capability off? Is it just to save a few hundred bytes in the kernel image, or is there some hardware that won't work? Or some other reason I haven't thought of? -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
