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 B54FEC433EF for ; Thu, 21 Oct 2021 08:56:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B81560EFE for ; Thu, 21 Oct 2021 08:56:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231527AbhJUI66 (ORCPT ); Thu, 21 Oct 2021 04:58:58 -0400 Received: from out4436.biz.mail.alibaba.com ([47.88.44.36]:4159 "EHLO out4436.biz.mail.alibaba.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231461AbhJUI64 (ORCPT ); Thu, 21 Oct 2021 04:58:56 -0400 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 Cc: jirislaby@kernel.org, amit@kernel.org, arnd@arndb.de, osandov@fb.com, shile.zhang@linux.alibaba.com, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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