From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760266AbcLAPfn (ORCPT ); Thu, 1 Dec 2016 10:35:43 -0500 Received: from p3plsmtps2ded01.prod.phx3.secureserver.net ([208.109.80.58]:37066 "EHLO p3plsmtps2ded01.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759312AbcLAPeD (ORCPT ); Thu, 1 Dec 2016 10:34:03 -0500 x-originating-ip: 72.167.245.219 From: kys@exchange.microsoft.com To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com, leann.ogasawara@canonical.com Cc: "K. Y. Srinivasan" Subject: [PATCH 08/15] hv: init percpu_list in hv_synic_alloc() Date: Thu, 1 Dec 2016 09:28:45 -0800 Message-Id: <1480613332-7788-8-git-send-email-kys@exchange.microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1480613332-7788-1-git-send-email-kys@exchange.microsoft.com> References: <1480613287-7748-1-git-send-email-kys@exchange.microsoft.com> <1480613332-7788-1-git-send-email-kys@exchange.microsoft.com> Reply-To: kys@microsoft.com X-CMAE-Envelope: MS4wfD/TdCNlhl9FzVBMa0Zwvv+cyoMbDmjFcFH4gYvt5ovg/QlG916+8bctCWDTE4j0BtRHCd1fJcKmGHwwSK/SJKepwwvcwSwDvn1r/XL2/oXZ3a/C3Yb2 Z6Zu+emdcoLKveNT5hPAet1QjLtUDEfedrmuDBSOaC0s0utGnqguap9WvHxR0grSbLQXJmf3QOfPliboZ33iMaRLGzZKZ7OVLd1QDH5sccA+2bDAgFvUSKiU QmL23L8fxDWDLx1CE7HmN2rtQ1GeOGuGPwwJmGCSb4UlNj1pcZwlmBywVCP3qMmvnWEipS12uUa3m4WLKpt7eMr0g+m6hyiTh8zYGf0y8hBLLqy/u3+k4pKo Kk2HFgN9pJj4erlwxQf1l1nTzijh8TLwgLg+vOnJfKTHtEyvvcOufijumM38QtezrL4m5WyrBb0WR0bqmAbqq1HKqBOoBQL3D7M6XaQBycJ/VFTOsZ8= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vitaly Kuznetsov Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a crash in percpu_channel_enq() when not all CPUs were online during initialization and it naturally belongs there. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index e4bb498..a2567a4 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -457,6 +457,8 @@ int hv_synic_alloc(void) pr_err("Unable to allocate post msg page\n"); goto err; } + + INIT_LIST_HEAD(&hv_context.percpu_list[cpu]); } return 0; @@ -552,8 +554,6 @@ void hv_synic_init(void *arg) rdmsrl(HV_X64_MSR_VP_INDEX, vp_index); hv_context.vp_index[cpu] = (u32)vp_index; - INIT_LIST_HEAD(&hv_context.percpu_list[cpu]); - /* * Register the per-cpu clockevent source. */ -- 1.7.4.1