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 EBE38C30653 for ; Thu, 4 Jul 2024 10:13:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 602A56B00AA; Thu, 4 Jul 2024 06:13:39 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 58BA86B00B2; Thu, 4 Jul 2024 06:13:39 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3BA926B00B3; Thu, 4 Jul 2024 06:13:39 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 180066B00AA for ; Thu, 4 Jul 2024 06:13:39 -0400 (EDT) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id D170C14111D for ; Thu, 4 Jul 2024 10:13:38 +0000 (UTC) X-FDA: 82301658516.05.7CA6A4F Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by imf14.hostedemail.com (Postfix) with ESMTP id 9890D100018 for ; Thu, 4 Jul 2024 10:13:36 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=zJ+Cdhei; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=kDOkNGzd; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=zJ+Cdhei; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=kDOkNGzd; spf=pass (imf14.hostedemail.com: domain of osalvador@suse.de designates 195.135.223.131 as permitted sender) smtp.mailfrom=osalvador@suse.de; dmarc=pass (policy=none) header.from=suse.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1720087993; 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=QhmwWK7X7UiaDm0j4qTVzfPR09c1UYF2XLSHXWFWMZE=; b=RlFtmP4Gf9BjNkQl4nEBUfOSw08LPp87XLOyRbiPFfkixgUHWF9kb88aXoOk+0Yxd56M9X 7KqgHx7sHAeOcmbtSYBxBZHp98JXS3iC98DM6bpN2V70TwEKrlFsopNZB8JNEJMZBf4J/q bs9dI+grTAgFG46AvWNjFYm9+v2QTMQ= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1720087993; a=rsa-sha256; cv=none; b=fxG7WNOMCHYZbJt+jPxdBqp+aizOMmEHjvmga+ANl3e8IPEcoDaFUnwpIDNzmrsRDvPRCo Gx2jQoTb5VsbdIDjCdRWP1hypbQH3Cxfz5+kcxZQx/BvLMll6D/N/JgAwtm9W5LYxRohbL 2Los9fg2uSKdOFhbz6UIz8kbFMjtWZI= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=zJ+Cdhei; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=kDOkNGzd; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=zJ+Cdhei; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=kDOkNGzd; spf=pass (imf14.hostedemail.com: domain of osalvador@suse.de designates 195.135.223.131 as permitted sender) smtp.mailfrom=osalvador@suse.de; dmarc=pass (policy=none) header.from=suse.de Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id B608F1F7B7; Thu, 4 Jul 2024 10:13:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1720088014; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=QhmwWK7X7UiaDm0j4qTVzfPR09c1UYF2XLSHXWFWMZE=; b=zJ+Cdheiybyd4svV3GuS3Px9B0wLc2RNzP3uLUGsSjI6U4qEuNq6AmQOHufuRof9Mlwcze x9stD/26YHeQkFvE7p8aotsEeykqElVxt9NGballb3H0mVXlJd0xeIrhJg40Vc9H5EFHkk 5L25rN2y/rrrYiGm/1xLMpcE+yjFQno= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1720088014; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=QhmwWK7X7UiaDm0j4qTVzfPR09c1UYF2XLSHXWFWMZE=; b=kDOkNGzdhG2lnJ6+bdDFPaC1yetA4zrn2y+kTWbx38UinBuGGTJbaRW9qJr8GPO+c03++L T/x5SYqTy62hOxBQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1720088014; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=QhmwWK7X7UiaDm0j4qTVzfPR09c1UYF2XLSHXWFWMZE=; b=zJ+Cdheiybyd4svV3GuS3Px9B0wLc2RNzP3uLUGsSjI6U4qEuNq6AmQOHufuRof9Mlwcze x9stD/26YHeQkFvE7p8aotsEeykqElVxt9NGballb3H0mVXlJd0xeIrhJg40Vc9H5EFHkk 5L25rN2y/rrrYiGm/1xLMpcE+yjFQno= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1720088014; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=QhmwWK7X7UiaDm0j4qTVzfPR09c1UYF2XLSHXWFWMZE=; b=kDOkNGzdhG2lnJ6+bdDFPaC1yetA4zrn2y+kTWbx38UinBuGGTJbaRW9qJr8GPO+c03++L T/x5SYqTy62hOxBQ== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id A08A21369F; Thu, 4 Jul 2024 10:13:33 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id TcRSIc11hmasYwAAD6G6ig (envelope-from ); Thu, 04 Jul 2024 10:13:33 +0000 Date: Thu, 4 Jul 2024 12:13:23 +0200 From: Oscar Salvador To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Peter Xu , Muchun Song , David Hildenbrand , SeongJae Park , Miaohe Lin , Michal Hocko , Matthew Wilcox , Christophe Leroy Subject: Re: [PATCH 00/45] hugetlb pagewalk unification Message-ID: References: <20240704043132.28501-1-osalvador@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240704043132.28501-1-osalvador@suse.de> X-Rspamd-Action: no action X-Rspamd-Queue-Id: 9890D100018 X-Stat-Signature: fi4rckfe4u3q3hummp91k39edtkia9rr X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1720088016-404947 X-HE-Meta: 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 JmqrEVhH Hqx8wepAlfDuhf3426zrLYRqkYQIHPWqrrj294KiTDq/6Tftl61qWNcNpKLc6PJ3k9OUMlP/VL2gUCixXArYRSp+52lbkfS+JC1fWdva5lDCpedlV02aZ65qE5RSbOiSXaNBBaLzdNA2t/yJpNGlR2kAXlhVttmXt+mxgi2ZIM3sr+gpvffpxFCcvJlZw4I8SOT1hK/btYuVrLIQKyWGu9rVNC/z0xsaVp3iUPDxUmWzTMdtQ8/NPLF1UkycaBOSrWQLxtrp9/C5KvIE= 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: List-Subscribe: List-Unsubscribe: On Thu, Jul 04, 2024 at 06:30:47AM +0200, Oscar Salvador wrote: > Hi all, > > During Peter's talk at the LSFMM, it was agreed that one of the things > that need to be done in order to further integrate hugetlb into mm core, > is to unify generic and hugetlb pagewalkers. > I started with this one, which is unifying hugetlb into generic > pagewalk, instead of having its hugetlb_entry entries. > Which means that pmd_entry/pte_entry(for cont-pte) entries will also deal with > hugetlb vmas as well, and so will new pud_entry entries since hugetlb can be > pud mapped (devm pages as well but we seem not to care about those with > the exception of hmm code). > > The outcome is this RFC. Just dropping the git tree, in case someone finds it more suitable: https://github.com/leberus/linux/ hugetlb-unification-pagewalk -- Oscar Salvador SUSE Labs