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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5092CCAC59A for ; Fri, 19 Sep 2025 16:08:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 8875F8E0005; Fri, 19 Sep 2025 12:08:28 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 85F1F8E0002; Fri, 19 Sep 2025 12:08:28 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 79BDB8E0005; Fri, 19 Sep 2025 12:08:28 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 665B88E0002 for ; Fri, 19 Sep 2025 12:08:28 -0400 (EDT) Received: from smtpin29.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 08A541DF24F for ; Fri, 19 Sep 2025 16:08:28 +0000 (UTC) X-FDA: 83906482296.29.9C3ED78 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf15.hostedemail.com (Postfix) with ESMTP id 61794A0011 for ; Fri, 19 Sep 2025 16:08:26 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=gxcwNWOd; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of kbusch@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=kbusch@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1758298106; a=rsa-sha256; cv=none; b=Tj5YiPdnRZbKX/quET1ejqMErONR4HagQmGpUcF1GBKloXLFddO3XusacQX3U4h+W3h5AA eYeeXwk0nio4VmeM1Dc5zMXVIM+/TA/bLliW+c39OftREe6fXMXkRIPu8gt2lTMUvIoJ4k omQIUQb5ox8eWKSUcndguRNrCRxK7n4= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=gxcwNWOd; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of kbusch@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=kbusch@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1758298106; 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=93+iChQy8k9w2vSLxjsMF2tpsbL6StUGENS3z0mFMo0=; b=1+XcpLG3Eek8zjBserPTu5Fegngg44xbJxi04bxC5J9U6Qi2rUPJt5KzUqJ9MERTItZDA+ y75cpxmkY7xxi6RQkS1PExyPi1pDhT5TIJ43G1YhSMjk9dQRkDq7/7dk3DJzunkHdBQyCC ttc5yOoBCsfUmu3vXSwIn+rhUDrM+SA= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 581BF60140; Fri, 19 Sep 2025 16:08:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 76C8EC4CEF0; Fri, 19 Sep 2025 16:08:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758298105; bh=KR7+2nE82F6C0RiPmuqmiCYxfBNwhzjUQ6Re6K7PmkQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gxcwNWOdwyYYCt/Mr4IoNw/QjfiG4fCy9ykIixLtIZgzxpvEaTh0ZrsRzbEkVlnG2 m8b1wOyRgj64SHlplGanM4IqWdr6Ywznq35IYlrDTPSiuH1HbSJA9OSV6F3cLQ0fmv gIfqZUpL6QTaZY7lchfgfbbV/HzPQ9GlWuIYB09YAq8LPsugW8lRkDPp3pD3pmqfjH MMDTa/BarqpIPeeM6zxgfbm5MTp42dkz6/ahu8QcAFUE+eO/S+U7a/1bN3BopMvk86 +JRB492i+MxOTtI0yVlp8MJ781GY30PjuvtN+/6jEMPcnyQy8X2xhocLeJS5gf/FQl TeUW9JwC+yaOg== Date: Fri, 19 Sep 2025 10:08:21 -0600 From: Keith Busch To: Leon Romanovsky Cc: Marek Szyprowski , Jason Gunthorpe , Abdiel Janulgue , Alexander Potapenko , Alex Gaynor , Andrew Morton , Christoph Hellwig , Danilo Krummrich , David Hildenbrand , iommu@lists.linux.dev, Jason Wang , Jens Axboe , Joerg Roedel , Jonathan Corbet , Juergen Gross , kasan-dev@googlegroups.com, linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nvme@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-trace-kernel@vger.kernel.org, Madhavan Srinivasan , Masami Hiramatsu , Michael Ellerman , "Michael S. Tsirkin" , Miguel Ojeda , Robin Murphy , rust-for-linux@vger.kernel.org, Sagi Grimberg , Stefano Stabellini , Steven Rostedt , virtualization@lists.linux.dev, Will Deacon , xen-devel@lists.xenproject.org Subject: Re: [PATCH v6 00/16] dma-mapping: migrate to physical address-based API Message-ID: References: <0db9bce5-40df-4cf5-85ab-f032c67d5c71@samsung.com> <20250912090327.GU341237@unreal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250912090327.GU341237@unreal> X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 61794A0011 X-Stat-Signature: noncr1dujjjugtdsyfn3m9jw1uqonexe X-Rspam-User: X-HE-Tag: 1758298106-666242 X-HE-Meta: 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 XpbA9Mkg PRSplJ1VTkV0APKBQnIVDI4FK+nOmyN1paZ5svQ1qa0S5S9MvSsDZ+eWNK6RrOm4AL+lxowtlYMe7OFOWz/qWhQoSyefvAf5xTuFkpMsYPi3OP3oQXuo0tUGfTfvYHl0J3n6We8i9EDi13xXkOwBPkMZGbT8yp7hvPtfvzCP8kP7gIa+yuHRXNZ+pNBPqM0qMpnDQP2D9UxGZrrJ9FSmr9rRIrvxHUc7CwvvceBIRbAuiwNF4AUNPtIwdWVQTw2DojjFtzIKbIYr0Rbv3HZQbEzjRWtEhIb1rn/K2v+g+KrKIaWZOM2z2AItOl+zWOIODbaFL 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 Fri, Sep 12, 2025 at 12:03:27PM +0300, Leon Romanovsky wrote: > On Fri, Sep 12, 2025 at 12:25:38AM +0200, Marek Szyprowski wrote: > > > > > > This series does the core code and modern flows. A followup series > > > will give the same treatment to the legacy dma_ops implementation. > > > > Applied patches 1-13 into dma-mapping-for-next branch. Let's check if it > > works fine in linux-next. > > Thanks a lot. Just fyi, when dma debug is enabled, we're seeing this new warning below. I have not had a chance to look into it yet, so I'm just reporting the observation. DMA-API: nvme 0006:01:00.0: cacheline tracking EEXIST, overlapping mappings aren't supported WARNING: kernel/dma/debug.c:598 at add_dma_entry+0x26c/0x328, CPU#1: (udev-worker)/773 Modules linked in: acpi_power_meter(E) loop(E) efivarfs(E) autofs4(E) CPU: 1 UID: 0 PID: 773 Comm: (udev-worker) Tainted: G E N 6.17.0-rc6-next-20250918-debug #6 PREEMPT(none) Tainted: [E]=UNSIGNED_MODULE, [N]=TEST pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : add_dma_entry+0x26c/0x328 lr : add_dma_entry+0x26c/0x328 sp : ffff80009fe0f460 x29: ffff80009fe0f470 x28: 0000000000000001 x27: 0000000000000001 x26: ffff8000835d7f38 x25: ffff8000835d7000 x24: ffff8000835d7e60 x23: 0000000000000000 x22: 0000000006e2cc00 x21: 0000000000000000 x20: ffff800082e8f218 x19: ffff0000a908ff80 x18: 00000000ffffffff x17: ffff8000801972a0 x16: ffff800080197054 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000004 x12: 0000000000020006 x11: 0000000030e4ef9f x10: ffff800083443358 x9 : ffff80008019499c x8 : 00000000fffeffff x7 : ffff800083443358 x6 : 0000000000000000 x5 : 00000000000bfff4 x4 : 0000000000000000 x3 : ffff0000bb005ac0 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000bb005ac0 Call trace: add_dma_entry+0x26c/0x328 (P) debug_dma_map_phys+0xc4/0xf0 dma_map_phys+0xe0/0x410 dma_map_page_attrs+0x94/0xf8 blk_dma_map_direct.isra.0+0x64/0xb8 blk_rq_dma_map_iter_next+0x6c/0xc8 nvme_prep_rq+0x894/0xa98 nvme_queue_rqs+0xb0/0x1a0 blk_mq_dispatch_queue_requests+0x268/0x3b8 blk_mq_flush_plug_list+0x90/0x188 __blk_flush_plug+0x104/0x170 blk_finish_plug+0x38/0x50 read_pages+0x1a4/0x3b8 page_cache_ra_unbounded+0x1a0/0x400 force_page_cache_ra+0xa8/0xd8 page_cache_sync_ra+0xa0/0x3f8 filemap_get_pages+0x104/0x950 filemap_read+0xf4/0x498 blkdev_read_iter+0x88/0x180 vfs_read+0x214/0x310 ksys_read+0x70/0x110 __arm64_sys_read+0x20/0x30 invoke_syscall+0x4c/0x118 el0_svc_common.constprop.0+0xc4/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x1a0/0x340 el0t_64_sync_handler+0x98/0xe0 el0t_64_sync+0x17c/0x180 ---[ end trace 0000000000000000 ]---