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 775BA106B53F for ; Wed, 25 Mar 2026 13:58:11 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DF7156B0089; Wed, 25 Mar 2026 09:58:10 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DCE4F6B008A; Wed, 25 Mar 2026 09:58:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CE4626B008C; Wed, 25 Mar 2026 09:58:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id BD9256B0089 for ; Wed, 25 Mar 2026 09:58:10 -0400 (EDT) Received: from smtpin19.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 5E6FE5B900 for ; Wed, 25 Mar 2026 13:58:10 +0000 (UTC) X-FDA: 84584739540.19.D78EF73 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf09.hostedemail.com (Postfix) with ESMTP id 8E95714001A for ; Wed, 25 Mar 2026 13:58:08 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="a/Isf1Nn"; spf=pass (imf09.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1774447088; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=s5C26zCJLmThL5P9gL0eaNPwT8Ft4vwHwAr08kkFcwE=; b=uCyzkeimgR1Q5UFmb1DZi8qDL3l6zBJ7MmBk22NwOWkIQQn+ETwI9C8T7nYSk0whj41wt8 /tIw5kSsjO2KDts53GEstoFGHWedKBcz4wnxrloyrQNx9q9c0zV6wVrDwgPpke7VfioL3q jUonYH8v7wPxLZ9H46+C5L7P8lJsRTc= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="a/Isf1Nn"; spf=pass (imf09.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1774447088; a=rsa-sha256; cv=none; b=AiAd64iGG/F4zYxjkE+b0CFKKAGew6YRYQN/LV78UTWJ/xQ9gTFws5z7oNAtBejmY9S0FM kA6Gog2KoUyFZbuACLl68X1GbIitJa18P2bnGf0YFjhU7LP24jGcjeqXelq3csYrEaAKyd U5EiYtkWcdPrDGJ3mFGDkSjgl8hy7x0= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id DF39C600C4; Wed, 25 Mar 2026 13:58:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64A8AC4CEF7; Wed, 25 Mar 2026 13:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774447087; bh=KyjiwAokSYk7ozvT6M+V8CAJzdrqAh71WLKooyLlGIw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=a/Isf1Nn7bbzilJ+WFOdPoPwPnR5v6LhxMrlFuBsyYg2XAwIEm2QemKRxXZjHN5Nu AChgjyjIk7vb33QJ6oLak9yHuJmn9pok4FzY118/Z+xhCYL9ZvqY/49+WryhvTm+9I H/uz07412nF3UDASUIjgPac3fueYVdb60S7vSKmq1WNoCwue6s87ja2S3Tsh5l+e3f 64SHJjpAkfwmhNBTPQZWk39ka/fPMUqC0l5Alm8rDrmCIyjXRQby1EnxD/KFHZR4nK FM9Uffh/ooy89oUPe3IV97KvalyzhwV1CHWkx0R4J2p9nJcR4wxJQ24/KPk84FZbM0 vIlUGx35sv7Jg== Message-ID: Date: Wed, 25 Mar 2026 14:57:57 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 18/21] drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare Content-Language: en-US To: "Lorenzo Stoakes (Oracle)" , Andrew Morton Cc: Jonathan Corbet , Clemens Ladisch , Arnd Bergmann , Greg Kroah-Hartman , "K . Y . Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Alexander Shishkin , Maxime Coquelin , Alexandre Torgue , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Bodo Stroesser , "Martin K . Petersen" , David Howells , Marc Dionne , Alexander Viro , Christian Brauner , Jan Kara , David Hildenbrand , "Liam R . Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, linux-staging@lists.linux.dev, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-afs@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Ryan Roberts References: <05467cb62267d750e5c770147517d4df0246cda6.1774045440.git.ljs@kernel.org> From: "Vlastimil Babka (SUSE)" In-Reply-To: <05467cb62267d750e5c770147517d4df0246cda6.1774045440.git.ljs@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: oi56fwjf59rpewdur95ycpond9nnnhai X-Rspamd-Queue-Id: 8E95714001A X-Rspamd-Server: rspam09 X-HE-Tag: 1774447088-163578 X-HE-Meta: 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 SGbidWdH lVM/MMJ2Blh7kvWXAcfv7UZadvm0ShhpicNO22ht7VKHHxirOt0obKx54fTs3dbLn5EwtbyHm5ztzvMxv9p+JYfynvsIc8LxqBtZoMdmru7YJmdPC1ACZezh3hROh5aQgOLLBfjj75Fa0KAjQXUnJWmf1BJNR+500LukSXK4TuCl2MLyWznhB73htHkxohQ+UXU0V7NHKe7oHudKa5Q9dO1r52Ba7Eyahod9/z5lN1wOgVzgsqhWeiLj0HMZ6e2qEk4KYe0fuKfUf1BdGWv0odMFH7sZzrR2OWhVxLwxJ3ZeJgwxmu+1/DDFGPvOPZaFubMjWHt3SgY7Otsq6OZLRJus7c7HcnZauhSJK6RdJmkB7GnX6G6P4xAOMqSK3+rVICc2qhUdbXmJQH3eN90paJSipGA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/20/26 23:39, Lorenzo Stoakes (Oracle) wrote: > The f_op->mmap interface is deprecated, so update the vmbus driver to use > its successor, mmap_prepare. > > This updates all callbacks which referenced the function pointer > hv_mmap_ring_buffer to instead reference hv_mmap_prepare_ring_buffer, > utilising the newly introduced compat_set_desc_from_vma() and > __compat_vma_mmap() to be able to implement this change. > > The UIO HV generic driver is the only user of hv_create_ring_sysfs(), > which is the only function which references > vmbus_channel->mmap_prepare_ring_buffer which, in turn, is the only > external interface to hv_mmap_prepare_ring_buffer. > > This patch therefore updates this caller to use mmap_prepare instead, > which also previously used vm_iomap_memory(), so this change replaces it > with its mmap_prepare equivalent, mmap_action_simple_ioremap(). > > Signed-off-by: Lorenzo Stoakes (Oracle) Acked-by: Vlastimil Babka (SUSE)