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Re: [Xen-devel] [PATCH v6 2/2] xen: move TLB-flush filtering out into populate_physmap during vm creation



On Tue, Sep 20, 2016 at 10:31:04AM +0800, Dongli Zhang wrote:
> This patch implemented parts of TODO left in commit id
> a902c12ee45fc9389eb8fe54eeddaf267a555c58 (More efficient TLB-flush
> filtering in alloc_heap_pages()). It moved TLB-flush filtering out into
> populate_physmap. Because of TLB-flush in alloc_heap_pages, it's very slow
> to create a guest with memory size of more than 100GB on host with 100+
> cpus.
> 

Do you have some actual numbers on how much faster after applying this
patch?

This is mostly for writing release note etc, so it is fine if you don't
have numbers at hand.

Wei.

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