Messages in this thread | | | Date | Thu, 08 Mar 2007 11:52:41 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: + stupid-hack-to-make-mainline-build.patch added to -mm tree |
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Chris Wright wrote: > I agree with that, but I think that's esp. for things like create and launch > new vcpu. The IPI bit I'm not as clear on, nor running this all on native > as well. >
Well, native would fall back to using the existing arch/i386 versions of those functions, so that's reasonably straightforward. There'll need to be a bit of internal rearrangement so that the Xen code can call in to do things like set up the pda/gdt and other bits of CPU state.
I don't think IPI is especially interesting in itself, is it? It's a necessary mechanism to implement smp_call_function(), but Xen can do IPI without having to invoke any of the existing apic-based IPI code. The other main user of IPI is cross-cpu tlb shootdown, but Xen has much more efficient mechanisms than IPI for that (so we'll need to make the tlb pv_ops interface a little wider to pass down a cpuset).
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