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=-14.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 50F05C433E2 for ; Mon, 14 Sep 2020 17:51:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E469F20EDD for ; Mon, 14 Sep 2020 17:51:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600105881; bh=0QfiZX2yjQD/nP2TunKrBPMwOw21bx+FMnDhV2wzt8c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=D0iNiyncN8JYO7+wN13a4xvGM96OZt2lrZkA9XjXjQGcCuoZMGh1Rw41miWRdGueY LFrRirXtiQGK4q1c2fw+cgt91nk0/G09+vSvbPMDFTcAihwQMKSSCNLEJEnKUoYFYp Qo/7RK7wG3mSE01qWq4muIwD+XWMCF/KDDM3o1fg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726160AbgINRvN (ORCPT ); Mon, 14 Sep 2020 13:51:13 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:41788 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725953AbgINL2P (ORCPT ); Mon, 14 Sep 2020 07:28:15 -0400 Received: by mail-wr1-f67.google.com with SMTP id w5so18280538wrp.8; Mon, 14 Sep 2020 04:28:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bM8OhnZ3b+dwZKNqc64uC9sPdBGDvgCJmyqFODoUC+8=; b=p2HQTdJqOXepgC06X0t5gZoKDdQRGp2gb8+pNQoGU1U4C2TYndEWJfMzE5ewpkp/cp XQFktz5kU0WY20VJ49mvmoRiDiGWoRuPjZ9l3t3vH+magb+YI7ITFZdZeiztsxmvgBT3 MSJoRFoRQNBV/BDkFqf6Hjjsu/GdyRmBOq/5Om5wtVcRh1ofLOKSukn2k3vhrjLUpFRV c4UMJQw3dJzpOFsaxuA5FKqLiYm4hROTI2kqRLgPbvyIpj0HzhujMe9pI5YziPUhxZtH QfPKTTL2KlMbg+plfMqgO2d7qyOjZpXIpg9MsR2p9cgLfiRchBwSLO9f2XGlBtSp8wad a2/A== X-Gm-Message-State: AOAM530A6Gi/uegfT3AGD4jc4JeJM2dzB6zXYf9Fq25txEKcI337i2DC HJ9WhQ2PWbIQMJ0xCSHr0ZcLUMhBSqY= X-Google-Smtp-Source: ABdhPJyXQ7JbMPXhnduOmF9GwhPMah3tAfW4aIE2/oumf4ffYByURENvXM+nn7osAsc+tRkWeCIn6Q== X-Received: by 2002:adf:d4c1:: with SMTP id w1mr15461492wrk.108.1600082893627; Mon, 14 Sep 2020 04:28:13 -0700 (PDT) Received: from liuwe-devbox-debian-v2.j3c5onc20sse1dnehy4noqpfcg.zx.internal.cloudapp.net ([51.145.34.42]) by smtp.gmail.com with ESMTPSA id s12sm12024606wmd.20.2020.09.14.04.28.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Sep 2020 04:28:13 -0700 (PDT) From: Wei Liu To: Linux on Hyper-V List Cc: virtualization@lists.linux-foundation.org, Linux Kernel List , Michael Kelley , Vineeth Pillai , Sunil Muthuswamy , Nuno Das Neves , Wei Liu , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger Subject: [PATCH RFC v1 03/18] Drivers: hv: vmbus: skip VMBus initialization if Linux is root Date: Mon, 14 Sep 2020 11:27:47 +0000 Message-Id: <20200914112802.80611-4-wei.liu@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200914112802.80611-1-wei.liu@kernel.org> References: <20200914112802.80611-1-wei.liu@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is no VMBus and the other infrastructures initialized in hv_acpi_init when Linux is running as the root partition. Signed-off-by: Wei Liu --- drivers/hv/vmbus_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index d69f4efa3719..da4a5660f915 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -2586,6 +2586,9 @@ static int __init hv_acpi_init(void) if (!hv_is_hyperv_initialized()) return -ENODEV; + if (hv_root_partition) + return -ENODEV; + init_completion(&probe_event); /* -- 2.20.1