linux-kernel - Re: [PATCH] powerpc/mm: Code cleanup for __hash_page

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Message-ID: <407d25db-6302-49bb-952b-c53739fc4202@kylinos.cn>
Date: Tue, 27 Feb 2024 17:32:47 +0800
From: Kunwu Chan <chentao@...inos.cn>
To: Michael Ellerman <mpe@...erman.id.au>, npiggin@...il.com,
 christophe.leroy@...roup.eu, aneesh.kumar@...nel.org,
 naveen.n.rao@...ux.ibm.com
Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/mm: Code cleanup for __hash_page_thp

Thanks for the reply.
On 2024/2/27 14:07, Michael Ellerman wrote:
> Kunwu Chan <chentao@...inos.cn> writes:
>> Thanks for the reply.
>>
>> On 2024/2/26 18:49, Michael Ellerman wrote:
>>> Kunwu Chan <chentao@...inos.cn> writes:
>>>> This part was commented from commit 6d492ecc6489
>>>> ("powerpc/THP: Add code to handle HPTE faults for hugepages")
>>>> in about 11 years before.
>>>>
>>>> If there are no plans to enable this part code in the future,
>>>> we can remove this dead code.
>>>
>>> I agree the code can go. But I'd like it to be replaced with a comment
>>> explaining what the dead code was trying to say.
> 
>> Thanks, i'll update a new patch with the following comment:
>>       /*
>>       * No CPU has hugepages but lacks no execute, so we
>>       * don't need to worry about cpu no CPU_FTR_COHERENT_ICACHE feature case
>>       */
> 
> Maybe wait until we can get some input from Aneesh. I'm not sure the
> code/comment are really up to date.
I won't do anything until I get a reply.
I'll wait for the latest msg.

> 
> cheers
-- 
Thanks,
   Kunwu