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 711ECC02198 for ; Wed, 12 Feb 2025 09:13:49 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 01673280004; Wed, 12 Feb 2025 04:13:49 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id F05F8280009; Wed, 12 Feb 2025 04:13:48 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DA61D280004; Wed, 12 Feb 2025 04:13:48 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id BAF46280001 for ; Wed, 12 Feb 2025 04:13:48 -0500 (EST) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 344D381319 for ; Wed, 12 Feb 2025 09:13:48 +0000 (UTC) X-FDA: 83110730136.15.313BE54 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by imf16.hostedemail.com (Postfix) with ESMTP id 04298180003 for ; Wed, 12 Feb 2025 09:13:45 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=m3dTSIg9; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=qypJZE7X; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=m3dTSIg9; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=qypJZE7X; spf=pass (imf16.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-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1739351626; a=rsa-sha256; cv=none; b=tS2XEARYbhSJeDpqeHsucJZT/tPjWKv7ZAqBxKAlfxHKXhw5rNNN5pxEpxeKRXzobvj84z TdPtXcfAO6rXiztkEpzKKNBusMzGLFwghgmQuAYICQfSek8DjavmbX0BAy57yJwAKkAtgu 7r/l9RICNWkmcpZ88sdqlf4A8fQbUDk= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=m3dTSIg9; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=qypJZE7X; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=m3dTSIg9; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=qypJZE7X; spf=pass (imf16.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=1739351626; 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=2IPpZOjtl4/HKcWGwHF7ZEUns5MkEHPNNzN+H2xCLOk=; b=ZBcrXo9PN/e3o3mxd+smmLRxP/p2usKnf2WwH14bthrflg3NYa5W6rKxsGLQYdrVkiFxYp rKtmZ5oDLBAEZ4KiR1Gj+nt3H2xEceHZzUo6Q7r1jIlymrBqdirbuUMGHr3kue/FzYPTVk /SSQ/PbjtWEdd0slMN6KCIU8MMJIbaQ= 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 4F16F1FD4D; Wed, 12 Feb 2025 09:13:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1739351624; 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=2IPpZOjtl4/HKcWGwHF7ZEUns5MkEHPNNzN+H2xCLOk=; b=m3dTSIg9HvKJ0bMHm3u6mk4HnkQBkOA/aFtlCiAteRkExF9AXVM++qRM9i4Hso84+BLPdU CKsxSC8Rq7KISbgmWVJP4m8S5tzHPxdlsRUvZi4aN2bRoUs0sLv5RlMhIR10r6fWdlNYN2 mMn29QGA0DaFh7IFHFEvioKXeq8SEKo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1739351624; 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=2IPpZOjtl4/HKcWGwHF7ZEUns5MkEHPNNzN+H2xCLOk=; b=qypJZE7XrTnCCatpkigIt/z/H4WpPGQ9xVDMipwSDIWwP3OxS7ARJQ3/z9et3RqlYWmBwa dZn1s3LbtBYLO1Dg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1739351624; 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=2IPpZOjtl4/HKcWGwHF7ZEUns5MkEHPNNzN+H2xCLOk=; b=m3dTSIg9HvKJ0bMHm3u6mk4HnkQBkOA/aFtlCiAteRkExF9AXVM++qRM9i4Hso84+BLPdU CKsxSC8Rq7KISbgmWVJP4m8S5tzHPxdlsRUvZi4aN2bRoUs0sLv5RlMhIR10r6fWdlNYN2 mMn29QGA0DaFh7IFHFEvioKXeq8SEKo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1739351624; 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=2IPpZOjtl4/HKcWGwHF7ZEUns5MkEHPNNzN+H2xCLOk=; b=qypJZE7XrTnCCatpkigIt/z/H4WpPGQ9xVDMipwSDIWwP3OxS7ARJQ3/z9et3RqlYWmBwa dZn1s3LbtBYLO1Dg== 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 EC6D713AEF; Wed, 12 Feb 2025 09:13:43 +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 ggbfNkdmrGcqPgAAD6G6ig (envelope-from ); Wed, 12 Feb 2025 09:13:43 +0000 Date: Wed, 12 Feb 2025 10:13:34 +0100 From: Oscar Salvador To: David Hildenbrand Cc: lsf-pc@lists.linux-foundation.org, Peter Xu , Muchun Song , linux-mm@kvack.org Subject: Re: [LSF/MM/BPF TOPIC] HugeTLB generic pagewalk Message-ID: References: <4c50a439-e2b8-4f54-ba3d-366d0e2961b2@redhat.com> <74ecaa8b-9e94-4ba8-a2f0-a312607516ba@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Action: no action X-Rspamd-Queue-Id: 04298180003 X-Stat-Signature: 3g1657g9z7obx1ue7xqh6be6d86u1koc X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1739351625-419941 X-HE-Meta: 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 88FiC/Ty CIBeOrUeBKPz3Dc8lqx8REdInkxEEUnYaIyGZndMep6NbvSKlY254W8WCThrcwwkZB4YDWTLCORqLTJreZRcKmguvo2We25RIdaIA6v3OaT8nnvDZFRA5iRgeZjXTtDCttyFneDGQ321qHYhlpAquueM/jUv2+cj0GTREhiKeoHuQsms+IPLi/rgRqbKDkBYYPHZOv20xhECtK8xH3Re6zALTfeitXYYD6WOiVdsChlf4LimF0xu0rZHdSF5i+0SBXJVy X-Bogosity: Ham, tests=bogofilter, spamicity=0.002046, 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 Tue, Feb 11, 2025 at 02:31:58PM +0100, David Hildenbrand wrote: > Yes, something that adds a better abstraction and walks ranges (e.g., folio > range, swap range, ..) moving away from the per-pte callbacks etc. Yes, that makes sense. > Yes, feel free to use what I propose as a starting point. If I get to > prototype something in the meantime, I'll send it to you. (staring at my > inbox, I'm not so sure I'll get to it shortly :) ) Yesterday I started to prototype something. Let me have something more solid and I will get back to you to see if we are aligned with the API and what can be improved/fixed. Thanks David for your insights! -- Oscar Salvador SUSE Labs