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dkim=none (message not signed) header.d=none;amazon.com; dmarc=none action=none header.from=oracle.com; Received: from BY5PR10MB4196.namprd10.prod.outlook.com (2603:10b6:a03:20d::23) by BYAPR10MB2856.namprd10.prod.outlook.com (2603:10b6:a03:89::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4042.16; Mon, 19 Apr 2021 23:41:28 +0000 Received: from BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::980e:61ba:57d2:47ee]) by BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::980e:61ba:57d2:47ee%7]) with mapi id 15.20.4042.024; Mon, 19 Apr 2021 23:41:28 +0000 Subject: Re: [PATCH v20 7/9] mm: hugetlb: add a kernel parameter hugetlb_free_vmemmap To: Muchun Song , corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, viro@zeniv.linux.org.uk, akpm@linux-foundation.org, paulmck@kernel.org, pawan.kumar.gupta@linux.intel.com, rdunlap@infradead.org, oneukum@suse.com, anshuman.khandual@arm.com, jroedel@suse.de, almasrymina@google.com, rientjes@google.com, willy@infradead.org, osalvador@suse.de, mhocko@suse.com, song.bao.hua@hisilicon.com, david@redhat.com, naoya.horiguchi@nec.com, joao.m.martins@oracle.com Cc: duanxiongchun@bytedance.com, fam.zheng@bytedance.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Miaohe Lin , Chen Huang , Bodeddula Balasubramaniam References: <20210415084005.25049-1-songmuchun@bytedance.com> <20210415084005.25049-8-songmuchun@bytedance.com> From: Mike Kravetz Message-ID: Date: Mon, 19 Apr 2021 16:41:24 -0700 User-Agent: Mozilla/5.0 (X11; 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Because vmemmap_remap_free() depends on vmemmap > being base page mapped. > > Signed-off-by: Muchun Song > Reviewed-by: Oscar Salvador > Reviewed-by: Barry Song > Reviewed-by: Miaohe Lin > Tested-by: Chen Huang > Tested-by: Bodeddula Balasubramaniam > --- > Documentation/admin-guide/kernel-parameters.txt | 17 +++++++++++++++++ > Documentation/admin-guide/mm/hugetlbpage.rst | 3 +++ > arch/x86/mm/init_64.c | 8 ++++++-- > include/linux/hugetlb.h | 19 +++++++++++++++++++ > mm/hugetlb_vmemmap.c | 24 ++++++++++++++++++++++++ > 5 files changed, 69 insertions(+), 2 deletions(-) Thanks, Reviewed-by: Mike Kravetz -- Mike Kravetz