From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932883AbbLNW3t (ORCPT ); Mon, 14 Dec 2015 17:29:49 -0500 Received: from p3plsmtps2ded01.prod.phx3.secureserver.net ([208.109.80.58]:34099 "EHLO p3plsmtps2ded01.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753663AbbLNW2Y (ORCPT ); Mon, 14 Dec 2015 17:28:24 -0500 x-originating-ip: 72.167.245.219 From: "K. Y. Srinivasan" To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com Cc: Andrey Smetanin , "Denis V. Lunev" , "K. Y. Srinivasan" , Haiyang Zhang Subject: [PATCH RESEND 07/27] drivers/hv: cleanup synic msrs if vmbus connect failed Date: Mon, 14 Dec 2015 16:01:38 -0800 Message-Id: <1450137718-26366-7-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1450137718-26366-1-git-send-email-kys@microsoft.com> References: <1450137698-26327-1-git-send-email-kys@microsoft.com> <1450137718-26366-1-git-send-email-kys@microsoft.com> X-CMAE-Envelope: MS4wfNtZyJBKqsvq52ILzreLnonUyXDqqmdMYpFovygp0vua27ir0N0GpsGurT2oQL+JPUfgcuntNP9ilT0CV/GRrPJ0w6CzyP/LFBGxG0+PF4BSp8KoVb7K ndhtwwcBvbV7GxB2VRMeP6SwTb2Z0JmZhvN8FyHHQd70dOQ4Hn13fPTajcws4rFOMMXrlW6uOiMFr2zsFIc3n74tou6I5n6cYzaBOICMzU4InXsRXXASp9CR jQ69icg3j4iEruE4WFZIYIyBkct6LGk44pPVi1eJEiw407Yk4h2E0dWFxB/T+b1Z1YhtkCescP/QJ8QAzgQwLR0o8Zi9BVruDkriefMcsXl6rphaPwkKrFYs Cz/1JtHmcfkKBApncWr2V3sfjw1Ibk1efIzjKQWIrjep9RSm1Id2RqhuU6aWS8fmuetTr3+uhlXQCC8ICdQwwD68N/Ewe0yoogVYV3DeluXv+YbrRHOi7Jyn ULrcgVfX6C1Etb6amUumh7L8ycPOII2ZwX8wQQ== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrey Smetanin Before vmbus_connect() synic is setup per vcpu - this means hypervisor receives writes at synic msr's and probably allocate hypervisor resources per synic setup. If vmbus_connect() failed for some reason it's neccessary to cleanup synic setup by call hv_synic_cleanup() at each vcpu to get a chance to free allocated resources by hypervisor per synic. This patch does appropriate cleanup in case of vmbus_connect() failure. Signed-off-by: Andrey Smetanin Signed-off-by: Denis V. Lunev Reviewed-by: Vitaly Kuznetsov CC: "K. Y. Srinivasan" CC: Haiyang Zhang CC: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/vmbus_drv.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index f19b6f7..3297731 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -867,7 +867,7 @@ static int vmbus_bus_init(int irq) on_each_cpu(hv_synic_init, NULL, 1); ret = vmbus_connect(); if (ret) - goto err_alloc; + goto err_connect; if (vmbus_proto_version > VERSION_WIN7) cpu_hotplug_disable(); @@ -885,6 +885,8 @@ static int vmbus_bus_init(int irq) return 0; +err_connect: + on_each_cpu(hv_synic_cleanup, NULL, 1); err_alloc: hv_synic_free(); hv_remove_vmbus_irq(); -- 1.7.4.1