From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:34320 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750841AbcIINjs (ORCPT ); Fri, 9 Sep 2016 09:39:48 -0400 Subject: Patch "[PATCH 038/135] drivers/hv: cleanup synic msrs if vmbus connect" has been added to the 4.4-stable tree To: asmetanin@virtuozzo.com, alexander.levin@verizon.com, den@openvz.org, gregkh@linuxfoundation.org, haiyangz@microsoft.com, kys@microsoft.com, vkuznets@redhat.com Cc: , From: Date: Fri, 09 Sep 2016 15:38:02 +0200 Message-ID: <147342828224514@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled [PATCH 038/135] drivers/hv: cleanup synic msrs if vmbus connect to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: 0038-drivers-hv-cleanup-synic-msrs-if-vmbus-connect-faile.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From b43e0d6819e7723e5b43da02b039eb6d62970f1f Mon Sep 17 00:00:00 2001 From: Andrey Smetanin Date: Mon, 14 Dec 2015 16:01:38 -0800 Subject: [PATCH 038/135] drivers/hv: cleanup synic msrs if vmbus connect failed [ Upstream commit 17efbee8ba02ef00d3b270998978f8a1a90f1d92 ] 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 Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/hv/vmbus_drv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -870,7 +870,7 @@ 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(); @@ -888,6 +888,8 @@ 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(); Patches currently in stable-queue which might be from asmetanin@virtuozzo.com are queue-4.4/0038-drivers-hv-cleanup-synic-msrs-if-vmbus-connect-faile.patch