Re: [PATCH v2 1/2] mm: use aligned address in clear_gigantic_page()

Kefeng Wang
2024-12-06T02:08:29Z

On 2024/12/6 9:47, Andrew Morton wrote:
> On Mon, 2 Dec 2024 09:03:45 +0800 Kefeng Wang <wangkefeng.wang@huawei.com> wrote:
>
>>>>> WARNING: the patch is only build tested.
>>>>
>>>> I'm holding this patch in mm-unstable because it's unclear (to me) that
>>>> this regression has been adequately addressed?
>>>
>>> Yes. This patch isn't ready to be merged yet. More works are needed to
>>> root cause the problem and implement the proper fix. I guess that
>>> Kefeng will continue to work on this.
>>
>> Sorry for the late, I've been buried in other tasks.
>>
>> The two bugfix patches in the next should be merged firstly, which is
>> not related about the performance issue.
>>
>> 84ddd1450383 mm: use aligned address in copy_user_gigantic_page()
>> 9fbd869b19b8 mm: use aligned address in clear_gigantic_page()
>>
>>
>> and according to the suggestion of Ying, I am trying to fix the
>> performance issue on arm64(will in new series), but I need to check no
>> regression on other arm64's machine, will send the new patches once
>> the test is complete.
>>
>> So Andrew, please help to pick up the above two bugfix patches to
>> v6.13-rcX if no objection.
>
> I added cc:stable to both and moved them into mm-hotfixes-unstable,
> targeting an upstream merge next week.
>
> "mm: use aligned address in clear_gigantic_page()":
> https://lkml.kernel.org/r/20241028145656.932941-1-wangkefeng.wang@huawei.com
>
> "mm: use aligned address in copy_user_gigantic_page()":
> https://lkml.kernel.org/r/20241028145656.932941-2-wangkefeng.wang@huawei.com
>

Nice, thanks a lot.