+ mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_wp.patch added to mm-unstable branch

+ mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_wp.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
has been added to the -mm mm-unstable branch.  Its filename is
     mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_wp.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_wp.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Oscar Salvador <osalvador@suse.de>
Subject: mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
Date: Thu, 9 May 2024 12:01:48 +0200

commit 1cb9dc4b475c ("mm: hwpoison: support recovery from HugePage
copy-on-write faults") added support to use the mc variants when coping
hugetlb pages on CoW faults.

Add the missing VM_FAULT_SET_HINDEX, so the right si_addr_lsb will be
passed to userspace to report the extension of the faulty area.

Link: https://lkml.kernel.org/r/20240509100148.22384-3-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Peter Xu <peterx@redhat.com>
Acked-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: Liu Shixin <liushixin2@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/hugetlb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/hugetlb.c~mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_wp
+++ a/mm/hugetlb.c
@@ -6067,7 +6067,7 @@ retry_avoidcopy:
 		goto out_release_all;
 
 	if (copy_user_large_folio(new_folio, old_folio, vmf->real_address, vma)) {
-		ret = VM_FAULT_HWPOISON_LARGE;
+		ret = VM_FAULT_HWPOISON_LARGE | VM_FAULT_SET_HINDEX(hstate_index(h));
 		goto out_release_all;
 	}
 	__folio_mark_uptodate(new_folio);
_

Patches currently in -mm which might be from osalvador@suse.de are

mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_fault.patch
mm-hugetlb-add-missing-vm_fault_set_hindex-in-hugetlb_wp.patch