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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9404BC79F9F for ; Thu, 10 Sep 2026 06:49:06 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4hgSvN70Z5z2y2L; Thu, 10 Sep 2026 16:49:04 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=95.215.58.237 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1789022944; cv=none; b=ctrrbl0917BfHiVhPng20nu+BgO8aMP4QsFAcDuwN7uVumYc9fDn/JgnUjAwK9KrCPuf6nUREyGdL/Q+W+cJ2EiCac2vr757DQosEnP+a5g+L2fXZlgwv0Lum8Q0Js4ZIPYanZ0qoo2Gbr5vZtUc94uQZUM7HAwzleaTHqytHomQZQOVx0MwZYD31CHw3vy4EMMuN1f/ZzVnTqx934Upj5s1RdEOmrZN9ffLNoA1iEqJ/VoEOi6XPmyTAkk3YuQ4BdJLtqcFYn+K2MQ9ro2Ay8OQutur9e6IMHvxjSFicNaRyDRBzkXao5/NcV5Li/V1wMsa+BtOy8ZSLS1TjJM36Q== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1789022944; c=relaxed/relaxed; bh=cdbujpu4aOo0T4Gyax2Ea3UO60X2jGQ9aFI7VTtnyXU=; h=Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Cc: Message-Id:References:To; b=UpphVy9qEv9idWmtrHfuRBNhXwylltTD/I6dS16UTLbm+HWe/j/tYOMr1rdA9XOVYo1mK1qUD4g9izMb2A4HxnRVYXivekuj4CcaRLyfWkJaI+yjFTM7/m0967ZozcJ2Aa6mX5Uf+jrhtC2qOqoSUCvqn2cN/29pT2DTT3Jig0hyOqpJ+qfjBMhHIPlwGBYpLHundKAq4xm74dB4/WXby5eVmSskhSE0pYgNA0Ugd1ov0vTGyUjeJRIeM+AhuiEnfkvUua9CYnYb381m2J4cs7j1K8NYaA2X9cOIIKj9gxs2YlfWsLLp+Wh1EjFTXgLVQ/rA5Kg7b4IRZfzHLve6Tw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.dev; dkim=pass (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=W8/NzpWV; dkim-atps=neutral; spf=pass (client-ip=95.215.58.237; helo=mta1.migadu.com; envelope-from=muchun.song@linux.dev; receiver=lists.ozlabs.org) smtp.mailfrom=linux.dev Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=W8/NzpWV; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.dev (client-ip=95.215.58.237; helo=mta1.migadu.com; envelope-from=muchun.song@linux.dev; receiver=lists.ozlabs.org) Received: from mta1.migadu.com (out-237.mta1.migadu.com [95.215.58.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4hgSvD5jZxz2xYh for ; Thu, 10 Sep 2026 16:48:49 +1000 (AEST) X-Envelope-To: linuxppc-dev@lists.ozlabs.org DKIM-Signature: a=rsa-sha256; bh=YHacq/CRvcLogvUw1Z/iF5AmWhyhaW1ODj1zgiJ2k7E=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1789022910; v=1; x=1789627710; b=W8/NzpWVVXERmI5NSrKpWItFXtN/X+flt4m4J/PVB1v3gCT24ku4gX7V4pAviM6gktup4Y5c h6ByV4vdw5PdjhRRk6RCOp2jvp6LInuYR9h2YyTBk0iAP+jL4tGwNZ8HLT3qjE34u5DtZAUzaIe 7s0QQUbnrI9i+o046EGpK6sg= X-Envelope-To: linuxppc-dev@lists.ozlabs.org Received: by mta12.migadu.com with ESMTPS id e82ef4c2d92f9736; Thu, 10 Sep 2026 06:48:30 +0000 X-Mizu-Trace-ID: e82ef4c2d92f9736 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset=us-ascii X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.700.51.1.1\)) Subject: Re: [PATCH v2 00/11] mm: Switch device DAX to section-based vmemmap optimization From: Muchun Song In-Reply-To: <20260908184516.c026438445ff3db78ee120fa@linux-foundation.org> Date: Thu, 10 Sep 2026 14:48:15 +0800 Cc: Muchun Song , David Hildenbrand , Oscar Salvador , Madhavan Srinivasan , Michael Ellerman , Jonathan Corbet , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org, Lorenzo Stoakes , Mike Rapoport , Qi Zheng , Nicholas Piggin , Christophe Leroy , Randy Dunlap Content-Transfer-Encoding: quoted-printable Message-Id: References: <20260908030335.96549-1-songmuchun@bytedance.com> <20260908184516.c026438445ff3db78ee120fa@linux-foundation.org> To: Andrew Morton X-Mailer: Apple Mail (2.3864.700.51.1.1) > On Sep 9, 2026, at 09:45, Andrew Morton = wrote: >=20 > On Tue, 8 Sep 2026 11:03:24 +0800 Muchun Song = wrote: >=20 >> This series is split out from the earlier, larger series "mm: = Generalize >> HVO for HugeTLB and device DAX" [1]. While the parent series = generalizes >> vmemmap optimization across HugeTLB and device DAX, this subset = addresses >> a single, self-contained step: switching device DAX to the = section-based >> sparse-vmemmap optimization infrastructure introduced for HugeTLB. >>=20 >> ... >>=20 >> This is intended to be the third smaller step toward the broader HVO >> generalization. The wider HVO consolidation between HugeTLB and = device >> DAX is left for follow-up series. >=20 > Thanks both, I'll add it to mm.git's mm-new branch. Hi Andrew, I've updated series [1] to v6 to address David's review comments from yesterday. Since the current series depends on this v6 version, I = suggest dropping these two series from mm-new. Once the v6 version of the = dependent series is merged in, I will re-update the current series to v3 based on = the new mm-new branch, and also fix the compilation error under !CONFIG_NUMA = [2] in that version. [1] = https://lore.kernel.org/all/20260910063256.64386-1-songmuchun@bytedance.co= m/ [2] https://lore.kernel.org/all/202609100517.0DrzxrW4-lkp@intel.com/ Thanks, Muchun