Re: [PATCH v7 0/9] mm: optimize zone-device memmap initialization
"Li Zhe" <[email protected]> Thu, 30 Jul 2026 15:53:22 +0800
| Newsgroups | org.kernel.vger.linux-arch,org.kernel.vger.linux-hardening,org.kernel.vger.linux-kernel,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
On 7/29/26 12:48 AM, Mike Rapoport wrote: >> 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. Thanks for pointing this out. I was able to get temporary access to an arm64 environment and have tested the generic template changes there as well. I will add the arm64 test result to the v9 cover letter. Thanks, Zhe