Patch "s390: select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP" has been added to the 6.1-stable tree

DISCUSSION Gerald Schaefer 2 participants 2 messages Feb 23 1 message not in the archive Stable branch

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Gerald Schaefer

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2026-02-23 14:53 UTC #1 lore raw

Quoted 7 lines · On Sun, 22 Feb 2026 18:51:14 -0500 Sasha Levin <[email protected]> wrote:

This is a note to let you know that I've just added the patch titled
s390: select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

Quoted 6 lines

The filename of the patch is:
s390-select-arch_want_hugetlb_page_optimize_vmemmap.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Please don't add this to any stable tree. This feature is broken on s390, and it recently was removed upstream via commit 64e2f60f355e ("s390:
Disable ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP"), which also had a Cc: stable and Fixes: 00a34d5a99c0.

So we'd rather want commit 64e2f60f355e added to stable v6.2+, than adding the original commit 00a34d5a99c0 to older trees.

Thanks,
Gerald

Sasha Levin

maintainer

2026-02-23 19:22 UTC #2 lore raw

Quoted 17 lines · Gerald Schaefer

Quoted 7 lines · On Sun, 22 Feb 2026 18:51:14 -0500 Sasha Levin <[email protected]> wrote:
This is a note to let you know that I've just added the patch titled
s390: select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
Quoted 6 lines
The filename of the patch is:
s390-select-arch_want_hugetlb_page_optimize_vmemmap.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 7 lines

Please don't add this to any stable tree. This feature is broken on s390, and it recently was removed upstream via commit 64e2f60f355e ("s390:
Disable ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP"), which also had a Cc: stable and Fixes: 00a34d5a99c0.
So we'd rather want commit 64e2f60f355e added to stable v6.2+, than adding the original commit 00a34d5a99c0 to older trees.

I'll drop the entire series from 6.1.

Signature · 2 lines

Thanks,
Sasha