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Message-Id: <1444199287-5676-1-git-send-email-den@openvz.org> Date: Wed, 7 Oct 2015 09:28:07 +0300 From: "Denis V. Lunev" <den@...nvz.org> To: unlisted-recipients:; (no To-header on input) Cc: devel@...uxdriverproject.org, linux-kernel@...r.kernel.org, Andrey Smetanin <asmetanin@...tuozzo.com>, "Denis V. Lunev" <den@...nvz.org>, "K. Y. Srinivasan" <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Vitaly Kuznetsov <vkuznets@...hat.com> Subject: [PATCH 1/1] drivers/hv: cleanup synic msrs if vmbus connect failed From: Andrey Smetanin <asmetanin@...tuozzo.com> 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 <asmetanin@...tuozzo.com> Signed-off-by: Denis V. Lunev <den@...nvz.org> CC: "K. Y. Srinivasan" <kys@...rosoft.com> CC: Haiyang Zhang <haiyangz@...rosoft.com> CC: Vitaly Kuznetsov <vkuznets@...hat.com> --- drivers/hv/vmbus_drv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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(); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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