Messages in this thread | | | Date | Tue, 28 Oct 2014 14:32:57 -0700 | Subject | Re: [RFC PATCH 1/2] zap_pte_range: update addr when forcing flush after TLB batching faiure | From | Linus Torvalds <> |
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On Tue, Oct 28, 2014 at 2:16 PM, Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote: >> >> Can't you just do a full invalidate and a SW IPI for larger ranges? > > For us, this would be great except ... we can potentially have other > agents with an MMU that only support snooping of the broadcasts...
Ugh. Oh well. I guess on power you need to walk all the hashed entries individually _anyway_, so there's no way you could really use a range-based or "invalidate all" model to avoid some of the work.
Linus
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