linux-kernel - RE: [PATCH v2] mm/memory-failure: Support disabling soft offline for HugeTLB pages

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Message-ID: <SJ1PR11MB60833884799B6AA2BC18ECE7FC14A@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date: Tue, 16 Sep 2025 18:08:31 +0000
From: "Luck, Tony" <tony.luck@...el.com>
To: "Meyer, Kyle" <kyle.meyer@....com>, "Fan, Shawn" <shawn.fan@...el.com>
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Subject: RE: [PATCH v2] mm/memory-failure: Support disabling soft offline for
 HugeTLB pages

>> My original patch for this just skipped the GHES->offline process
>> for huge pages. But I wasn't aware of the sysctl control. That provides
>> a better solution.
>
> Tony, does that mean you're OK with using the existing sysctl interface? If
> so, I'll just send a separate patch to update the sysfs-memory-page-offline
> documentation and drop the rest.

Kyle,

It depends on which camp the external customer that reported this
falls into:

1) "I'm OK disabling all soft offline requests".

or the:

2) "I'd like 4K pages to still go offline if the BIOS asks, just not any huge pages".

Shawn: Can you please find out?

-Tony