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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 C37A2C432C3 for ; Tue, 19 Nov 2019 05:41:52 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 91853222DC for ; Tue, 19 Nov 2019 05:41:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="gmd1X9nn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 91853222DC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=driverdev-devel-bounces@linuxdriverproject.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 38A662221F; Tue, 19 Nov 2019 05:41:52 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VZUVgKxUpeNE; Tue, 19 Nov 2019 05:41:47 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by silver.osuosl.org (Postfix) with ESMTP id 247A22045F; Tue, 19 Nov 2019 05:41:47 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by ash.osuosl.org (Postfix) with ESMTP id 8FD561BF2BD for ; Tue, 19 Nov 2019 05:41:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 6BFCA2045F for ; Tue, 19 Nov 2019 05:41:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id s4Tm+F5NVh7C for ; Tue, 19 Nov 2019 05:41:40 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by silver.osuosl.org (Postfix) with ESMTPS id 77D2720020 for ; Tue, 19 Nov 2019 05:41:40 +0000 (UTC) Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AFEDD21783; Tue, 19 Nov 2019 05:41:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574142100; bh=LlzMNDJ0JCchkYkAHu29SOMVRQeTRHAAwXM9PKy8u+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gmd1X9nnuM2kwiJCcQjM/4dLqZ/njsfobu0HIgEk8p4F5RS+4bJc+Zk4dHW3aPPTH GhGR/YM2PMieMp+HE/fTo6251/PUvGLVaMyhUeuSh1KcdrixK92XpKW4kVd2WMu1bM 5c0rPgLZ+3o0m5C0n3sGfTd2Qd/cO187gn6TVhi0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Subject: [PATCH 4.19 387/422] x86/hyperv: Suppress "PCI: Fatal: No config space access function found" Date: Tue, 19 Nov 2019 06:19:44 +0100 Message-Id: <20191119051424.164699533@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191119051400.261610025@linuxfoundation.org> References: <20191119051400.261610025@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Driver Project Developer List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Josh Poulson , Sasha Levin , Olaf Aepfle , Stephen Hemminger , Greg Kroah-Hartman , Haiyang Zhang , stable@vger.kernel.org, Michael Kelley , Vitaly Kuznetsov , Marcelo Cerri , "H. Peter Anvin" , Andy Whitcroft , "devel@linuxdriverproject.org" , Thomas Gleixner , Jason Wang Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" From: Dexuan Cui [ Upstream commit 2f285f46240d67060061d153786740d4df53cd78 ] A Generation-2 Linux VM on Hyper-V doesn't have the legacy PCI bus, and users always see the scary warning, which is actually harmless. Suppress it. Signed-off-by: Dexuan Cui Signed-off-by: Thomas Gleixner Reviewed-by: Michael Kelley Cc: "H. Peter Anvin" Cc: KY Srinivasan Cc: Haiyang Zhang Cc: Stephen Hemminger Cc: "devel@linuxdriverproject.org" Cc: Olaf Aepfle Cc: Andy Whitcroft Cc: Jason Wang Cc: Vitaly Kuznetsov Cc: Marcelo Cerri Cc: Josh Poulson Link: https://lkml.kernel.org/r/ --- arch/x86/hyperv/hv_init.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 3fb8551552862..8a9cff1f129dc 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -17,6 +17,7 @@ * */ +#include #include #include #include @@ -257,6 +258,22 @@ static int hv_cpu_die(unsigned int cpu) return 0; } +static int __init hv_pci_init(void) +{ + int gen2vm = efi_enabled(EFI_BOOT); + + /* + * For Generation-2 VM, we exit from pci_arch_init() by returning 0. + * The purpose is to suppress the harmless warning: + * "PCI: Fatal: No config space access function found" + */ + if (gen2vm) + return 0; + + /* For Generation-1 VM, we'll proceed in pci_arch_init(). */ + return 1; +} + /* * This function is to be invoked early in the boot sequence after the * hypervisor has been detected. @@ -333,6 +350,8 @@ void __init hyperv_init(void) hv_apic_init(); + x86_init.pci.arch_init = hv_pci_init; + /* * Register Hyper-V specific clocksource. */ -- 2.20.1 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel