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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 8E4BDC433DB for ; Wed, 20 Jan 2021 16:09:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 572472339E for ; Wed, 20 Jan 2021 16:09:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731518AbhATQIk (ORCPT ); Wed, 20 Jan 2021 11:08:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731983AbhATQIQ (ORCPT ); Wed, 20 Jan 2021 11:08:16 -0500 Received: from mail-ed1-x52b.google.com (mail-ed1-x52b.google.com [IPv6:2a00:1450:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4B86C0613C1 for ; Wed, 20 Jan 2021 08:07:35 -0800 (PST) Received: by mail-ed1-x52b.google.com with SMTP id bx12so12383544edb.8 for ; Wed, 20 Jan 2021 08:07:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=odx+DIka95/c6zrkDR8kFE4sUKEXLWcK1XgsQ64ZqzY=; b=UMnPQ/JMGjxdP+z21Xc0rMdynZ2F0/J98NfDoBgwtmxhotW2QGV2jdCpP/jnDdF+a9 t0TDXmlE+faEnS+090/bYRA/KjWHkaodSI/IplZnq1ZLL2b/SaMsRbTa4Cj8p/F4jSVi oOeR3NyDb3+wpTLdgaGPmdnNysc00uvxirVYEcFmZiWTNZUTv3NrY+AlNuvS+7Gjelg3 W+a239Cc+KCibmr3e7lV7xnhShn1E6Qzyk78zvOEmmjdS7m1Z3wsXTckFVACoAM7rN+f UuAVI6hYX9K9sVw6pwc5Z7u01qATw6GAws+9iSSXFn81Cdu/CcyTQFibhnW4KDrxc4TG +RXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=odx+DIka95/c6zrkDR8kFE4sUKEXLWcK1XgsQ64ZqzY=; b=sSVj4dZYazcMPj16SYAmL52ZBHQab1Fd8ccyNscXv4TtcJPPzmb/MlTCTWQcE5XBaS rlSai96Yu+XXp0r6s3wWS2YsCOUYTaiubp6wdvwt5ln9+Pmbo+/C6goL/bWFoOvdfw0g OHCzw0W1PVCFeB1O66GzvSLYPBry5KbDAcHsEF/ZRfbIiYMNLa4/F4K2tPDsJ3cyj6zJ UI7sHlxmvqyhWmYvinTLB65kOI6mwWYgUqKrl98ke8brhShwQXWsrZQjOhqOcthaj7kn bncHBK8mZOut0xBr7K2jW1mKpgjRU7yEH1mfS1rIk6r3O0FtVauaOIOG9SsXVlNKMPlQ 7Byw== X-Gm-Message-State: AOAM531mqS/rUZsR3j5u+eKDhfv1NAw4B2zI7V3HZuj9wPUCT12qwcZZ YU1XjtzXz/kVPY1ryYnlmE+aoUTPK7Zw7pEEv76qzA== X-Google-Smtp-Source: ABdhPJw1NEcdnEbxX+CkQBkpBO6Vc2zgJb1eRfvm75+kgadtVnofZIhH+bMdVnrUYhwCtF+ahQ/2RUr6G06e0f8kpQ8= X-Received: by 2002:a05:6402:304e:: with SMTP id bu14mr7526130edb.60.1611158854493; Wed, 20 Jan 2021 08:07:34 -0800 (PST) MIME-Version: 1.0 References: <20210120120058.29138-1-wei.liu@kernel.org> <20210120120058.29138-4-wei.liu@kernel.org> In-Reply-To: <20210120120058.29138-4-wei.liu@kernel.org> From: Pavel Tatashin Date: Wed, 20 Jan 2021 11:06:58 -0500 Message-ID: Subject: Re: [PATCH v5 03/16] Drivers: hv: vmbus: skip VMBus initialization if Linux is root To: Wei Liu Cc: Linux on Hyper-V List , virtualization@lists.linux-foundation.org, Linux Kernel List , Michael Kelley , Vineeth Pillai , Sunil Muthuswamy , Nuno Das Neves , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org On Wed, Jan 20, 2021 at 7:01 AM Wei Liu wrote: > > 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 > --- > v3: Return 0 instead of -ENODEV. > --- > 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 502f8cd95f6d..ee27b3670a51 100644 > --- a/drivers/hv/vmbus_drv.c > +++ b/drivers/hv/vmbus_drv.c > @@ -2620,6 +2620,9 @@ static int __init hv_acpi_init(void) > if (!hv_is_hyperv_initialized()) > return -ENODEV; > > + if (hv_root_partition) > + return 0; > + Reviewed-by: Pavel Tatashin