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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ECFC5C43387 for ; Thu, 3 Jan 2019 10:26:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BCAF520815 for ; Thu, 3 Jan 2019 10:26:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730921AbfACK0R (ORCPT ); Thu, 3 Jan 2019 05:26:17 -0500 Received: from mga09.intel.com ([134.134.136.24]:12320 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726618AbfACK0R (ORCPT ); Thu, 3 Jan 2019 05:26:17 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Jan 2019 02:26:16 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,434,1539673200"; d="scan'208";a="122992002" Received: from unknown (HELO [10.239.13.114]) ([10.239.13.114]) by FMSMGA003.fm.intel.com with ESMTP; 03 Jan 2019 02:26:15 -0800 Message-ID: <5C2DE48D.4090105@intel.com> Date: Thu, 03 Jan 2019 18:31:41 +0800 From: Wei Wang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Cornelia Huck CC: virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, mst@redhat.com, borntraeger@de.ibm.com, pbonzini@redhat.com, dgilbert@redhat.com, pasic@linux.ibm.com Subject: Re: [PATCH v1 1/2] virtio-balloon: tweak config_changed implementation References: <1546493462-32244-1-git-send-email-wei.w.wang@intel.com> <1546493462-32244-2-git-send-email-wei.w.wang@intel.com> <20190103104018.33eeaa29.cohuck@redhat.com> In-Reply-To: <20190103104018.33eeaa29.cohuck@redhat.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/03/2019 05:40 PM, Cornelia Huck wrote: > On Thu, 3 Jan 2019 13:31:01 +0800 > Wei Wang wrote: > >> virtio-ccw has deadlock issues with reading config registers inside the > s/config registers/the config space/ ? Sounds good. > >> interrupt context, so we tweak the virtballoon_changed implementation >> by moving the config read operations into the related workqueue contexts. > Also credit Christian with a Reported-by:? Yes, definitely. Sorry for missing that. Best, Wei