From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94ED4EB64DA for ; Sat, 24 Jun 2023 14:53:05 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 806288D0002; Sat, 24 Jun 2023 10:53:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 7B6058D0001; Sat, 24 Jun 2023 10:53:04 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 67DF98D0002; Sat, 24 Jun 2023 10:53:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 593A38D0001 for ; Sat, 24 Jun 2023 10:53:04 -0400 (EDT) Received: from smtpin13.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 190181A0255 for ; Sat, 24 Jun 2023 14:53:04 +0000 (UTC) X-FDA: 80937933888.13.DD33DA9 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by imf05.hostedemail.com (Postfix) with ESMTP id 2D8BA100018 for ; Sat, 24 Jun 2023 14:52:59 +0000 (UTC) Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b="PjEYT+/P"; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf05.hostedemail.com: domain of aneesh.kumar@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=aneesh.kumar@linux.ibm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1687618381; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=7t6yVx/S2dndE4uFEEcL0uKTeJDYhE48ld443i4rI2w=; b=G3MkZRxniADl9ifKQk7r3hWdlSh6NUHy03v1AN9nedKhJXD7juK9lJ2mMXgKDVqgoYVFru LwLZ+cVJebTdhsJzT61TMQdGcvPFDUyVJyNGS2CfSMWszUJLzlkhyD4vj2O1IYJ/oFnu+j 6QdU8FDAvbtreGQP9q+biu/lGKW+kbQ= ARC-Authentication-Results: i=1; imf05.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b="PjEYT+/P"; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf05.hostedemail.com: domain of aneesh.kumar@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=aneesh.kumar@linux.ibm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1687618381; a=rsa-sha256; cv=none; b=40OcktwjZaBC+U8ag7xn2EubmQnAwfbVwdXcRstnqIgZ8SfIN5vsFwAJJsO6NpY2idwuFS lMatB+7SLT6oJi9y7xV/Z6mfSkGfBoiY19VSOvcrNnVbvmSoGm3hTkM2Cs3R39C9DW1CB2 841YVjQxN72dtm+zr7BgyHE4+H147Wk= Received: from pps.filterd (m0353723.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35OEkxJQ011632; Sat, 24 Jun 2023 14:52:38 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : in-reply-to : references : date : message-id : mime-version : content-type; s=pp1; bh=7t6yVx/S2dndE4uFEEcL0uKTeJDYhE48ld443i4rI2w=; b=PjEYT+/PCVLg1vWKmRngR+Bzvz8+0OnLHjjMe0whPUPd8yLY9JPh9hE4C0hUcnDS6kk8 yoIalrAoFve3M+b2iRTfMYXiduUe9erI7VE29z05Wtd+IiAEDUKYsyHY97TY5D1ABcbe C2JXbLIpGSclN82MjqBUTCldUA3pCDnoW13nNILPUzqe56GWwSVvCDrHy0RisTZ7r9cO LtL+R6t+t5qfmsor5nQl4hVI86QFKg3INH3e0/xOyV0ZmNg+m+X6Tc1RSJ+lqKM2zqRy BtSFM4xU8si7L95JZkpTvnqUaiSqbn3m4//D3YvGem3hjZ30m32MMg1U6KN6Y7E/oML7 5Q== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3re0xdhdkd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 24 Jun 2023 14:52:38 +0000 Received: from m0353723.ppops.net (m0353723.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 35OEfS53000387; Sat, 24 Jun 2023 14:52:37 GMT Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3re0xdhdk6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 24 Jun 2023 14:52:37 +0000 Received: from pps.filterd (ppma02dal.us.ibm.com [127.0.0.1]) by ppma02dal.us.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 35ODl33U008260; Sat, 24 Jun 2023 14:52:36 GMT Received: from smtprelay03.wdc07v.mail.ibm.com ([9.208.129.113]) by ppma02dal.us.ibm.com (PPS) with ESMTPS id 3rdr45bbuj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 24 Jun 2023 14:52:36 +0000 Received: from smtpav02.wdc07v.mail.ibm.com (smtpav02.wdc07v.mail.ibm.com [10.39.53.229]) by smtprelay03.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 35OEqZZ92818650 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 24 Jun 2023 14:52:35 GMT Received: from smtpav02.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4C5285805B; Sat, 24 Jun 2023 14:52:35 +0000 (GMT) Received: from smtpav02.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 108375805C; Sat, 24 Jun 2023 14:52:30 +0000 (GMT) Received: from skywalker.linux.ibm.com (unknown [9.43.67.238]) by smtpav02.wdc07v.mail.ibm.com (Postfix) with ESMTP; Sat, 24 Jun 2023 14:52:29 +0000 (GMT) X-Mailer: emacs 29.0.91 (via feedmail 11-beta-1 I) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org, mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, npiggin@gmail.com, christophe.leroy@csgroup.eu Cc: Oscar Salvador , Mike Kravetz , Dan Williams , Joao Martins , Catalin Marinas , Muchun Song , Will Deacon Subject: Re: [PATCH v2 00/16] Add support for DAX vmemmap optimization for ppc64 In-Reply-To: <20230616110826.344417-1-aneesh.kumar@linux.ibm.com> References: <20230616110826.344417-1-aneesh.kumar@linux.ibm.com> Date: Sat, 24 Jun 2023 20:22:27 +0530 Message-ID: <87edm0x68k.fsf@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: dZiffyy5BFPiRoeIxmuRBOdM6odZps76 X-Proofpoint-GUID: setDkWvO0wX1qEZuuP51mYS3hXbl6MLf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-24_10,2023-06-22_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 mlxlogscore=999 spamscore=0 suspectscore=0 mlxscore=0 clxscore=1015 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306240137 X-Rspam-User: X-Stat-Signature: xpoys6gk6gb9rog1iyjqkwewh4wbmd74 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 2D8BA100018 X-HE-Tag: 1687618379-691358 X-HE-Meta: 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 9+tIBlaT lOWaKu/DZepFNDoZPcYeoiXqthtNeC2SCqwGdTZFeDN7KLtlbLLQvmHTe6cG34OqkMTDRj4/QBdDpg2EnZDIqykWUHofYqi1HlsMJVws5mGZhyjI= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Andrew, "Aneesh Kumar K.V" writes: > This patch series implements changes required to support DAX vmemmap > optimization for ppc64. The vmemmap optimization is only enabled with radix MMU > translation and 1GB PUD mapping with 64K page size. The patch series also split > hugetlb vmemmap optimization as a separate Kconfig variable so that > architectures can enable DAX vmemmap optimization without enabling hugetlb > vmemmap optimization. This should enable architectures like arm64 to enable DAX > vmemmap optimization while they can't enable hugetlb vmemmap optimization. More > details of the same are in patch "mm/vmemmap optimization: Split hugetlb and > devdax vmemmap optimization" > > Changes from V1: > * Fix make htmldocs warning > * Fix vmemmap allocation bugs with different alignment values. > * Correctly check for section validity to before we free vmemmap area > > Aneesh Kumar K.V (16): > powerpc/mm/book3s64: Use pmdp_ptep helper instead of typecasting. > powerpc/book3s64/mm: mmu_vmemmap_psize is used by radix > powerpc/book3s64/mm: Fix DirectMap stats in /proc/meminfo > powerpc/book3s64/mm: Use PAGE_KERNEL instead of opencoding > powerpc/mm/dax: Fix the condition when checking if altmap vmemap can > cross-boundary > mm/hugepage pud: Allow arch-specific helper function to check huge > page pud support > mm: Change pudp_huge_get_and_clear_full take vm_area_struct as arg > mm/vmemmap: Improve vmemmap_can_optimize and allow architectures to > override > mm/vmemmap: Allow architectures to override how vmemmap optimization > works > mm: Add __HAVE_ARCH_PUD_SAME similar to __HAVE_ARCH_P4D_SAME > mm/huge pud: Use transparent huge pud helpers only with > CONFIG_TRANSPARENT_HUGEPAGE > mm/vmemmap optimization: Split hugetlb and devdax vmemmap optimization > powerpc/book3s64/mm: Enable transparent pud hugepage > powerpc/book3s64/vmemmap: Switch radix to use a different vmemmap > handling function > powerpc/book3s64/radix: Add support for vmemmap optimization for radix > powerpc/book3s64/radix: Remove mmu_vmemmap_psize > > Documentation/mm/vmemmap_dedup.rst | 1 + > Documentation/powerpc/index.rst | 1 + > Documentation/powerpc/vmemmap_dedup.rst | 101 +++ > arch/loongarch/Kconfig | 2 +- > arch/powerpc/Kconfig | 1 + > arch/powerpc/include/asm/book3s/64/pgtable.h | 156 ++++- > arch/powerpc/include/asm/book3s/64/radix.h | 47 ++ > .../include/asm/book3s/64/tlbflush-radix.h | 2 + > arch/powerpc/include/asm/book3s/64/tlbflush.h | 8 + > arch/powerpc/include/asm/pgtable.h | 3 + > arch/powerpc/mm/book3s64/pgtable.c | 78 +++ > arch/powerpc/mm/book3s64/radix_pgtable.c | 577 ++++++++++++++++-- > arch/powerpc/mm/book3s64/radix_tlb.c | 7 + > arch/powerpc/mm/init_64.c | 39 +- > arch/powerpc/platforms/Kconfig.cputype | 1 + > arch/riscv/Kconfig | 2 +- > arch/x86/Kconfig | 3 +- > drivers/nvdimm/pfn_devs.c | 2 +- > fs/Kconfig | 2 +- > include/linux/mm.h | 32 +- > include/linux/pgtable.h | 11 +- > include/trace/events/thp.h | 17 + > mm/Kconfig | 5 +- > mm/debug_vm_pgtable.c | 2 +- > mm/huge_memory.c | 2 +- > mm/mm_init.c | 2 +- > mm/mremap.c | 2 +- > mm/sparse-vmemmap.c | 3 + > 28 files changed, 1032 insertions(+), 77 deletions(-) > create mode 100644 Documentation/powerpc/vmemmap_dedup.rst > Michael Ellerman merged some of the ppc64 patches. How do you like to merge the mm changes? Do you like a repost of patches 6-12? -aneesh