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

Mike Rapoport <[email protected]> Tue, 28 Jul 2026 19:48:40 +0300

Newsgroups	org.kernel.vger.linux-arch,org.kernel.vger.linux-hardening,org.kernel.vger.linux-kernel,org.kvack.linux-mm
Message-ID	<178525732062.1556190.314794914123127147.b4-review@b4>

> 
> The numbers below measure the time spent in memmap_init_zone_device()
> during driver bind/rebind. They are not measurements of the full
> nd_pmem or dax_pmem bind/rebind operation.
> 
> Tested in a VM with a 100 GB fsdax namespace device configured with
> map=dev and a 100 GB devdax namespace (align=2097152) on Intel Ice Lake
> server.

Since the first pathes touch the generic part of the memory map
initialization, it would be nice to make sure they don't regress other
architectures.

-- 
Sincerely yours,
Mike.