Re: [RFC PATCH 00/10] liveupdate: hugetlb support

Pratyush Yadav
2025-12-09T08:18:55Z

Hi,

On Mon, Dec 08 2025, Zhu Yanjun wrote:

> 在 2025/12/6 15:02, Pratyush Yadav 写道:
>> This series adds support for live updating hugetlb-backed memfd,
>> including support for 1G huge pages. This allows live updating VMs which
>> use hugepages to back VM memory.
>>
>> Please take a look at this patch series [0] to know more about the Live
>> Update Orchestrator (LUO). It also includes patches for live updating a
>> shmem-backed memfd. This series is a follow up to that, adding huge page
>> support as well.
>>
>> You can also read this LWN article [1] to learn more about KHO and Live
>> Update Orchestrator, though do note that this article is a bit
>> out-of-date. LUO has since evolved. For example, subsystems have been
>> replaced with FLB, and the state machine has been simplified.
>>
>> This series is based on top of mm-non-unstable, which includes the LUO
>> FLB patches [2].
>>
>> This series uses LUO FLB to track how many pages are preserved for each
>> hstate, to ensure the live updated kernel does not over-allocate
>> hugepages.
>
>
> Is this patch serise based on the patches in the link
> https://lkml.org/lkml/2025/11/26/1665?

No. That is an independent series. This series is based on
mm-nonmm-unstable, which has the base LUO patches and the LUO FLB
patches, but not the VFIO or IOMMU patches.

[...]

--
Regards,
Pratyush Yadav