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From: Balbir Singh <balbirs@nvidia.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	dri-devel@lists.freedesktop.org
Cc: "Balbir Singh" <balbirs@nvidia.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"David Hildenbrand" <david@redhat.com>, "Zi Yan" <ziy@nvidia.com>,
	"Joshua Hahn" <joshua.hahnjy@gmail.com>,
	"Rakie Kim" <rakie.kim@sk.com>,
	"Byungchul Park" <byungchul@sk.com>,
	"Gregory Price" <gourry@gourry.net>,
	"Ying Huang" <ying.huang@linux.alibaba.com>,
	"Alistair Popple" <apopple@nvidia.com>,
	"Oscar Salvador" <osalvador@suse.de>,
	"Lorenzo Stoakes" <lorenzo.stoakes@oracle.com>,
	"Baolin Wang" <baolin.wang@linux.alibaba.com>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	"Nico Pache" <npache@redhat.com>,
	"Ryan Roberts" <ryan.roberts@arm.com>,
	"Dev Jain" <dev.jain@arm.com>, "Barry Song" <baohua@kernel.org>,
	"Lyude Paul" <lyude@redhat.com>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"Ralph Campbell" <rcampbell@nvidia.com>,
	"Mika Penttilä" <mpenttil@redhat.com>,
	"Matthew Brost" <matthew.brost@intel.com>,
	"Francois Dugast" <francois.dugast@intel.com>
Subject: [PATCH] mm: fix up softleaf vs thp device-private in remove_migration_pmd()
Date: Fri, 14 Nov 2025 12:21:52 +1100	[thread overview]
Message-ID: <20251114012153.2634497-1-balbirs@nvidia.com> (raw)

A fix-up in the thp device-private patch
mm/rmap: extend rmap and migration support device-private entries
introduces conflicts with the softleaf series, this is a fix up patch
to resolve the issue

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Mika Penttilä <mpenttil@redhat.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Francois Dugast <francois.dugast@intel.com>

Signed-off-by: Balbir Singh <balbirs@nvidia.com>
---
 mm/huge_memory.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 3a8f0c4143c5..4d65c51bc0fe 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -4760,7 +4760,7 @@ void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
 	folio_get(folio);
 	pmde = folio_mk_pmd(folio, READ_ONCE(vma->vm_page_prot));
 
-	if (is_writable_migration_entry(entry))
+	if (softleaf_is_migration_write(entry))
 		pmde = pmd_mkwrite(pmde, vma);
 
 	if (folio_is_device_private(folio)) {
@@ -4777,8 +4777,6 @@ void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
 
 	if (pmd_swp_soft_dirty(*pvmw->pmd))
 		pmde = pmd_mksoft_dirty(pmde);
-	if (softleaf_is_migration_write(entry))
-		pmde = pmd_mkwrite(pmde, vma);
 	if (pmd_swp_uffd_wp(*pvmw->pmd))
 		pmde = pmd_mkuffd_wp(pmde);
 	if (!softleaf_is_migration_young(entry))
-- 
2.51.1



             reply	other threads:[~2025-11-14  1:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-14  1:21 Balbir Singh [this message]
2025-11-14  1:21 ` [PATCH] mm/huge_memory: fix override of entry in remove_migration_pmd Balbir Singh
2025-11-14  1:24   ` Balbir Singh
2025-11-14  9:25     ` David Hildenbrand (Red Hat)
2025-11-14  9:23   ` David Hildenbrand (Red Hat)
2025-11-14 11:46     ` Balbir Singh
2025-11-14  1:25 ` [PATCH] mm: fix up softleaf vs thp device-private in remove_migration_pmd() Balbir Singh

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