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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2944DC433EF for ; Thu, 21 Oct 2021 08:57:17 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B1E1360E9C for ; Thu, 21 Oct 2021 08:57:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B1E1360E9C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4HZhF71Jh5z3c9t for ; Thu, 21 Oct 2021 19:57:15 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=47.88.44.36; helo=out4436.biz.mail.alibaba.com; envelope-from=xianting.tian@linux.alibaba.com; receiver=) Received: from out4436.biz.mail.alibaba.com (out4436.biz.mail.alibaba.com [47.88.44.36]) (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 4HZhDb5W6Xz2yPD for ; Thu, 21 Oct 2021 19:56:45 +1100 (AEDT) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R191e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04400; MF=xianting.tian@linux.alibaba.com; NM=1; PH=DS; RN=9; SR=0; TI=SMTPD_---0Ut7VcNC_1634806588; Received: from B-LB6YLVDL-0141.local(mailfrom:xianting.tian@linux.alibaba.com fp:SMTPD_---0Ut7VcNC_1634806588) by smtp.aliyun-inc.com(127.0.0.1); Thu, 21 Oct 2021 16:56:29 +0800 Subject: Re: [PATCH v11 0/3] make hvc pass dma capable memory to its backend To: Greg KH References: <20211015024658.1353987-1-xianting.tian@linux.alibaba.com> From: Xianting Tian Message-ID: <16ffdf1c-7ea9-7466-fcc5-7e6b09ca5a28@linux.alibaba.com> Date: Thu, 21 Oct 2021 16:56:28 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: arnd@arndb.de, amit@kernel.org, jirislaby@kernel.org, shile.zhang@linux.alibaba.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, osandov@fb.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" I am very glad to get this reply:) Thank you and other experts' kindly help and guide, which improved me a lot. 在 2021/10/21 下午4:35, Greg KH 写道: > On Fri, Oct 15, 2021 at 10:46:55AM +0800, Xianting Tian wrote: >> Dear all, >> >> This patch series make hvc framework pass DMA capable memory to >> put_chars() of hvc backend(eg, virtio-console), and revert commit >> c4baad5029 ("virtio-console: avoid DMA from stack”) > Thanks for sticking with this, looks much better now, all now queued up. > > greg k-h