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 37689354AEB for ; Sun, 5 Jul 2026 20:36:33 +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=1783283794; cv=none; b=Zcc1fxANPQDsyiNAGoCco6jTsrMpblRpZlLLlp/MY3O/+/zwqACDj0IxX+rd+ag9dQfKRtEL+IpFFXKxa3XjYyC1yu+tAwyfU6tMXj1ufUFlw5xJeoo1+d7WYeL1RQTQuXc6oOrUhVzmMD0CRdR/j9wiHHGVWgLcBnIYPdFFvz0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783283794; c=relaxed/simple; bh=g9vwTcjog/zmfrckbLUaNTFCVFv/weCEEpyUUc1iRl0=; h=Date:To:From:Subject:Message-Id; b=rBRR2giSwCX2mPTKNyvoOqBSXO026i088VKgBqdIEjBYwRst5El9tFZ+jdNiyjkwQ4B/+sww5wHOCUHxnmPdyT4ITGESRTTngm27wMR9N4d+//7sdybqzRPrQQwXwIgDN5JBLfhNeo3in6p9NgOk5BeMTfr3TJmrQpbImfFiQuM= 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=DmRooMFY; 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="DmRooMFY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EE171F000E9; Sun, 5 Jul 2026 20:36:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1783283793; bh=NRarP+LVGyB1+F24ja26f23ofQA4SroMwKgdmImd3bM=; h=Date:To:From:Subject; b=DmRooMFYMNBLD6nQDT2azP8TxZMR2zPqZv1nLz9xuIr0YY9fXpzidvwHndOmZ+QB4 88VHBVVisQ9ozwj5iu3SYbWSwX8N7YlckBkfLhnhHxdTl/nSSuzokmZC+Wz04hy/0B iz4SUZZoe4EArEgmdxxkN1EFyDNF3sSI7v4h8wZs= Date: Sun, 05 Jul 2026 13:36:32 -0700 To: mm-commits@vger.kernel.org,baohua@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-vmalloc-align-vm_area-so-vmap-can-batch-mappings.patch removed from -mm tree Message-Id: <20260705203633.0EE171F000E9@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/vmalloc: align vm_area so vmap() can batch mappings has been removed from the -mm tree. Its filename was mm-vmalloc-align-vm_area-so-vmap-can-batch-mappings.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: "Barry Song (Xiaomi)" Subject: mm/vmalloc: align vm_area so vmap() can batch mappings Date: Thu, 18 Jun 2026 16:47:26 +0800 Try to align the vmap virtual address to PMD_SHIFT or a larger PTE mapping size hinted by the architecture, so contiguous pages can be batch-mapped when setting PMD or PTE entries. Add __get_vm_area_node_aligned_caller() as a wrapper over __get_vm_area_node() to simplify repeated calls with fixed arguments. Link: https://lore.kernel.org/20260618084726.1070022-7-jiangwen6@xiaomi.com Signed-off-by: Barry Song (Xiaomi) Signed-off-by: Wen Jiang Tested-by: Xueyuan Chen Tested-by: Leo Yan Cc: Andrew Donnellan Cc: Anshuman Khandual Cc: Catalin Marinas Cc: David Hildenbrand Cc: Dev Jain Cc: Mike Rapoport Cc: Ryan Roberts Cc: Uladzislau Rezki Cc: Wen Jiang Cc: Will Deacon Signed-off-by: Andrew Morton --- mm/vmalloc.c | 37 ++++++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) --- a/mm/vmalloc.c~mm-vmalloc-align-vm_area-so-vmap-can-batch-mappings +++ a/mm/vmalloc.c @@ -3634,6 +3634,41 @@ out: return err; } +static struct vm_struct *__get_vm_area_node_aligned_caller(unsigned long size, + unsigned long align, unsigned long flags, const void *caller) +{ + return __get_vm_area_node(size, align, PAGE_SHIFT, flags, + VMALLOC_START, VMALLOC_END, + NUMA_NO_NODE, GFP_KERNEL, caller); +} + +static struct vm_struct *vmap_get_aligned_vm_area(unsigned long size, + unsigned long flags, const void *caller) +{ + struct vm_struct *vm_area; + unsigned int shift; + + /* Try PMD alignment for large sizes */ + if (size >= PMD_SIZE) { + vm_area = __get_vm_area_node_aligned_caller(size, PMD_SIZE, + flags, caller); + if (vm_area) + return vm_area; + } + + /* Try CONT_PTE alignment */ + shift = arch_vmap_pte_supported_shift(size); + if (shift > PAGE_SHIFT) { + vm_area = __get_vm_area_node_aligned_caller(size, 1UL << shift, + flags, caller); + if (vm_area) + return vm_area; + } + + /* Fall back to page alignment */ + return __get_vm_area_node_aligned_caller(size, PAGE_SIZE, flags, caller); +} + /** * vmap - map an array of pages into virtually contiguous space * @pages: array of page pointers @@ -3672,7 +3707,7 @@ void *vmap(struct page **pages, unsigned return NULL; size = (unsigned long)count << PAGE_SHIFT; - area = get_vm_area_caller(size, flags, __builtin_return_address(0)); + area = vmap_get_aligned_vm_area(size, flags, __builtin_return_address(0)); if (!area) return NULL; _ Patches currently in -mm which might be from baohua@kernel.org are