Re: [PATCH v7 0/9] mm: optimize zone-device memmap initialization

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From: Dave Hansen

Date: Mon Jul 20 2026 - 09:32:13 EST

On 7/20/26 05:02, Li Zhe wrote:
> This reduces the average memmap initialization time measured during
> rebind by about 60.4% for nd_pmem and 56.4% for dax_pmem.

There are lots of things in the kernel we could optimize.

Why is this important?