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

[Andrew Morton]

On Mon, 24 Aug 2026 12:53:47 -0500 Kyle Meyer <kyle.meyer@xxxxxxx> wrote:

> On Thu, Aug 20, 2026 at 11:47:11AM +0800, Shuai Xue wrote:
> > Hi Kyle,
> 
> Hi.
>  
> > Following up on this thread. The v2 patch once landed in akpm's mm
> > tree (9ae6eefa4b6b "mm/memory-failure: support disabling soft
> > offline for HugeTLB pages"), but that commit is now not reachable
> > from any branch, and mainline as of v7.3-rc1 still only has the 0/1
> > switch in /proc/sys/vm/enable_soft_offline.
> 
> Thanks for pointing this out.
> 
> Looks like this patch was added on 2025-09-16 [1] and dropped on 2025-11-11 [2].
> 
> [1] https://lore.kernel.org/all/20250916032512.AE588C4CEEB@xxxxxxxxxxxxxxx
> [2] https://lore.kernel.org/all/20251111231818.52A60C16AAE@xxxxxxxxxxxxxxx
> 
> I must have missed the second email.
> 
> I don't remember discussing a v3. Can someone please remind me what we planned
> to change or whether there was another reason it was dropped?

I interpreted the (lengthy) review discussion to mean that a new
version was to be sent out.

> > The underlying issue discussed here is still unresolved for us:
> > firmware reporting per-rank corrected error thresholds via GHES
> > triggers soft offline of huge pages, which neither addresses the
> > failing rank nor is acceptable for workloads that rely on stable
> > hugetlb physical layouts.
> > 
> > Do you still plan to send a v3, e.g. with the disable-bitmask
> > layout Anshuman suggested upthread?
> 
> I wasn't planning on sending a v3 but I'm happy to revisit if needed.

That would be best at this stage - please review the changelog to see
if additional details should be added to cover the considerations which
were discussed.