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 X-Spam-Level: X-Spam-Status: No, score=-12.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1BFFAC433E6 for ; Mon, 11 Jan 2021 16:52:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B2B5F2242A for ; Mon, 11 Jan 2021 16:52:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2B5F2242A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 0958C8D004A; Mon, 11 Jan 2021 11:52:30 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 01E478D0041; Mon, 11 Jan 2021 11:52:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E29F38D004A; Mon, 11 Jan 2021 11:52:29 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0081.hostedemail.com [216.40.44.81]) by kanga.kvack.org (Postfix) with ESMTP id C47478D0041 for ; Mon, 11 Jan 2021 11:52:29 -0500 (EST) Received: from smtpin12.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 7FFA2180AD804 for ; Mon, 11 Jan 2021 16:52:29 +0000 (UTC) X-FDA: 77694087618.12.train68_4d0b92e2750e Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin12.hostedemail.com (Postfix) with ESMTP id 286EC18015E24 for ; Mon, 11 Jan 2021 16:52:29 +0000 (UTC) X-HE-Tag: train68_4d0b92e2750e X-Filterd-Recvd-Size: 3070 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Mon, 11 Jan 2021 16:52:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610383947; h=from:from: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TT5nmDWi6LkHgnWEhMxL8P9sU/ossqA0nVC3Jti0BDE=; b=NoIQG0tt6U8k6ooi5GHzKmA2sStDt9gkPiI6RWxfrIkeNJDigoQBIKB1eI5p5FaXNXjemk 3SLJF0kVRbzg3tiK74Dt4gWY253dKUrRj3J0adzeUvOQwnGbm95FcqeUeYwBXsxsOYAX+h EV8yE5wPlFCQmiaUMDLokyo2Oh4qfjo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-360-6bMbofalNa2CmOJ9E8mIOw-1; Mon, 11 Jan 2021 11:52:23 -0500 X-MC-Unique: 6bMbofalNa2CmOJ9E8mIOw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F158418C89C4; Mon, 11 Jan 2021 16:52:21 +0000 (UTC) Received: from [10.36.115.103] (ovpn-115-103.ams2.redhat.com [10.36.115.103]) by smtp.corp.redhat.com (Postfix) with ESMTP id 76E651899A; Mon, 11 Jan 2021 16:52:20 +0000 (UTC) Subject: Re: [PATCH 1/5] mm: Introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE To: Oscar Salvador , akpm@linux-foundation.org Cc: mhocko@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, vbabka@suse.cz, pasha.tatashin@soleen.com References: <20201217130758.11565-1-osalvador@suse.de> <20201217130758.11565-2-osalvador@suse.de> From: David Hildenbrand Organization: Red Hat GmbH Message-ID: <21932014-3027-8ad9-2140-f63500c641d7@redhat.com> Date: Mon, 11 Jan 2021 17:52:19 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20201217130758.11565-2-osalvador@suse.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 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: On 17.12.20 14:07, Oscar Salvador wrote: > In order to use self-hosted memmap array, the platform needs to have > support for CONFIG_SPARSEMEM_VMEMMAP and altmap. > Currently, only arm64, PPC and x86_64 have the support, so enable those > platforms with ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE. "In the first version, only .... will support it". I'd probably split off enabling it per architecture in separate patches and the end of the series. Apart from that looks good. > > ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE will be checked later on to see whether > we can enable this feature or not. > > Signed-off-by: Oscar Salvador -- Thanks, David / dhildenb