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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 15657CAC5BE for ; Sat, 27 Sep 2025 06:29:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=06Hpa/1OvoT0TpifdUKNOv9vBuePkD3RG427WbWRUJY=; b=C4Ec1gORzBbQicVoxXDFJDKjDx wSi97R7aMpjVy/jDtz+bPpoZeXVoQtLcevfsZ2jAr1NFCx+0SS/Mr7tJp+b1+DP/RWAnR6CGTV2JH ErtHizrNMdIp/3Fy+BPWN3QWOVXy9aV7Y7nHgpQkfWbd1eLKf6W6opMlDGjMzhgYXRPonraiUrppR J1E5jiGHvN17mzbUfKdhDkirDMsIfRy0TeVxlE9vgSHm2k4uXrynphGuw+IyIGD6jErFpPmH3y29L MW+Lb4d82hoMeNfXMR4NRSmdy9uvvg0zZoIqYdV1j3BmHlqa4e1xVbad4DhuAlODxfEUrzUmDszfb zDgjrQbQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v2ORA-00000007f8m-1nTg; Sat, 27 Sep 2025 06:29:40 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uzzuQ-00000005ZSb-1Pzk for linux-nvme@lists.infradead.org; Sat, 20 Sep 2025 15:53:58 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 48CFD6014D; Sat, 20 Sep 2025 15:53:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60277C4CEEB; Sat, 20 Sep 2025 15:53:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758383637; bh=74lAPVg94TJI1UJYgpgsOH2UQdl5PvTbgBIsxqD4zKU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qbW+7cTtf3ZC80yzIDcC6P8YiS7RGpwlDTYrGzG6j13dnssuecjvDInjgO1NGXAWT hwAQh0KbTGofBujeWDAzo8uyHyjnB4klpbdUcdr3KuR2vqLH1ociavVauQR6s6LM4C wtVOvrFkt2iXYZs5fqCArx+bz0wZR2AOL0I2MwUCesz5LxbYvHr8I0E7tiQwcKX2mh /6u8BUT9rHwxjmbaoEZQ7oL93zaaJmT1SbIoB4zqQPQjKbmP8WBwznCmHZDgor62TB Nrccq2E0zXdIiG+Jydr5UoWaXp7Rok6i3H1DFwLNWMk9eGO4TL+3lE8Pzt1MNtveO6 UwT9ZhNinKNOQ== Date: Sat, 20 Sep 2025 18:53:52 +0300 From: Leon Romanovsky To: Keith Busch 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: <20250920155352.GH10800@unreal> 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: X-Mailman-Approved-At: Fri, 26 Sep 2025 23:29:38 -0700 X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Fri, Sep 19, 2025 at 10:08:21AM -0600, Keith Busch wrote: > 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. Did you apply all patches or only Marek's branch? I don't get this warning when I run my NVMe tests on current dmabuf-vfio branch. Thanks > > 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 ]--- > >