From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEB5B30566E for ; Tue, 9 Jun 2026 01:22:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780968166; cv=none; b=LeV5ZXAta6iCzTMnBgraGfJ/meMaY1iI5q+e4RgaYyyJYERh5dsb6Aqd+xdZ8fmCROi8NCXENP/WDANXUNei7merALwK/tyk9wpb0ZBW5kS+V0ofoqBfPg5N5KodOvfqazyfNJ0PLIC28d69FN9mrr67z/c6+JOfvGdfXKnq/Xc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780968166; c=relaxed/simple; bh=a4uvbAfx8TRJYF+G/NePgkmaRAzoLWS4o5+WF+ThP2s=; h=Date:To:From:Subject:Message-Id; b=BeZTor6YcFDXoPyYRgY7tkfuC0RWy+z/1bjUvdSlIaBW5RFhsrHv7JrcpVsUkRT6v+V6Ug8bNMwLtNOLSs/O+HHKWcSvQN5Gp4cw0YLnn2/JFzfI7m7Lem5S77om4ZLX1ZuGC4aO6QhNiMpa6gNEt7e9oNsg+GmbhpRQHhoETYA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=Q7K5yuqJ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Q7K5yuqJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89A561F00898; Tue, 9 Jun 2026 01:22:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1780968163; bh=34xrXum9BM/Cxk7beqOQmwsujFHfdYVOlGDJKF8H2fk=; h=Date:To:From:Subject; b=Q7K5yuqJvQSnClDX9h9lyHT+SZcLKU6sM7bWopgB40U1KBWL9vzToPbfDAQV1PTEI F390KtvTv2Blb7AeYVuL83p9E5spw7J5lgo7dJfTyQpzQy1OI2mVGAdXytShwgaCE8 N5e/BJTVkYfdrmQ/ovXjXnqqS8EiyObJ8S3DUSRk= Date: Mon, 08 Jun 2026 18:22:43 -0700 To: mm-commits@vger.kernel.org,will@kernel.org,vbabka@kernel.org,surenb@google.com,rppt@kernel.org,palmer@dabbelt.com,osalvador@kernel.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,kernel@xen0n.name,david@kernel.org,davem@davemloft.net,chenhuacai@kernel.org,catalin.marinas@arm.com,aou@eecs.berkeley.edu,andreas@gaisler.com,alex@ghiti.fr,songmuchun@bytedance.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-sparse-vmemmap-provide-generic-vmemmap_set_pmd-and-vmemmap_check_pmd.patch removed from -mm tree Message-Id: <20260609012243.89A561F00898@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/sparse-vmemmap: provide generic vmemmap_set_pmd() and vmemmap_check_pmd() has been removed from the -mm tree. Its filename was mm-sparse-vmemmap-provide-generic-vmemmap_set_pmd-and-vmemmap_check_pmd.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Muchun Song Subject: mm/sparse-vmemmap: provide generic vmemmap_set_pmd() and vmemmap_check_pmd() Date: Mon, 1 Jun 2026 16:48:40 +0800 Patch series "mm/sparse-vmemmap: Provide generic vmemmap_set_pmd() and vmemmap_check_pmd()", v3. The weak vmemmap_set_pmd() and vmemmap_check_pmd() hooks are currently no-ops in the generic code, which leaves architectures that need PMD-level handling to open-code the same logic locally. This series provides generic implementations for both helpers in mm/sparse-vmemmap.c. vmemmap_set_pmd() installs a huge PMD with PAGE_KERNEL protection, and vmemmap_check_pmd() verifies a present leaf PMD before reusing the existing vmemmap_verify() helper. With those generic helpers in place, patches 2-5 remove the now redundant arch-specific implementations from arm64, riscv, loongarch, and sparc. This patch (of 5): The two weak functions are currently no-ops on every architecture, forcing each platform that needs them to duplicate the same handful of lines. Provide a generic implementation: - vmemmap_set_pmd() simply sets a huge PMD with PAGE_KERNEL protection. - vmemmap_check_pmd() verifies that the PMD is present and leaf, then calls the existing vmemmap_verify() helper. Architectures that need special handling can continue to override the weak symbols; everyone else gets the standard version for free. Link: https://lore.kernel.org/20260601084845.3792171-1-songmuchun@bytedance.com Link: https://lore.kernel.org/20260601084845.3792171-2-songmuchun@bytedance.com Signed-off-by: Muchun Song Acked-by: David Hildenbrand (Arm) Acked-by: Oscar Salvador (SUSE) Cc: Albert Ou Cc: Alexandre Ghiti Cc: Andreas Larsson Cc: Catalin Marinas Cc: David S. Miller Cc: Huacai Chen Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Palmer Dabbelt Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: WANG Xuerui Cc: Will Deacon Signed-off-by: Andrew Morton --- mm/sparse-vmemmap.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/mm/sparse-vmemmap.c~mm-sparse-vmemmap-provide-generic-vmemmap_set_pmd-and-vmemmap_check_pmd +++ a/mm/sparse-vmemmap.c @@ -386,12 +386,17 @@ int __meminit vmemmap_populate_hvo(unsig void __weak __meminit vmemmap_set_pmd(pmd_t *pmd, void *p, int node, unsigned long addr, unsigned long next) { + WARN_ON_ONCE(!pmd_set_huge(pmd, virt_to_phys(p), PAGE_KERNEL)); } int __weak __meminit vmemmap_check_pmd(pmd_t *pmd, int node, unsigned long addr, unsigned long next) { - return 0; + if (!pmd_leaf(pmdp_get(pmd))) + return 0; + vmemmap_verify((pte_t *)pmd, node, addr, next); + + return 1; } int __meminit vmemmap_populate_hugepages(unsigned long start, unsigned long end, _ Patches currently in -mm which might be from songmuchun@bytedance.com are