Re: [PATCH v2 0/2] x86/mm: support memory-failure on 32-bits with SPARSEMEM

David Hildenbrand (Red Hat)
2025-11-05T08:12:12Z

On 05.11.25 03:45, Xie Yuanbin wrote:
> On Tue, 4 Nov 2025 06:26:58 -0800, Dave Hansen wrote:
>> Which LLM generated that for you, btw?
>
> I wrote this myself; LLM just helped me with the translation. My English
> isn't very good, so I apologize for any mistakes.
>
>> I wanted to know _specifically_ what kind of hardware or 32-bit
>> environment you wanted to support with this series, though.
>
> I think I have explained it clearly enough in this email:
> Link: https://lore.kernel.org/20251104133254.145660-1-xieyuanbin1@huawei.com
>
> In simple terms, it refers to some old existing equipment and some
> embedded devices. More specifically, it includes some routers, switches,
> and similar devices. From what I know, there is no VM environment that
> using it.
> If you are asking about a specific CPU chip model, I'm sorry, but I may
> not be able to provide that information for you.
>
> Btw, why do you only ask about which x86_32 devices use memory-failure,
> but not which x86_32 devices use sparsemem? This patch just allows both
> to coexist, and perhaps both are important?

Let me clarify what we need to know:

Will you (or your employer) be running such updated 32bit kernels on
hardware that supports MCEs.

In other words: is this change driver by *real demand* or just by "oh
look, we can enable that now, I can come up with a theoretical use case
but I don't know if anybody would actually care"?

--
Cheers

David