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=-18.8 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, 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 3D1C1C07E96 for ; Tue, 6 Jul 2021 05:08:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 127386198B for ; Tue, 6 Jul 2021 05:08:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230032AbhGFFLP (ORCPT ); Tue, 6 Jul 2021 01:11:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229963AbhGFFLO (ORCPT ); Tue, 6 Jul 2021 01:11:14 -0400 Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D6D1C061574 for ; Mon, 5 Jul 2021 22:08:36 -0700 (PDT) Received: by mail-ed1-x531.google.com with SMTP id x12so26238307eds.5 for ; Mon, 05 Jul 2021 22:08:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ionos.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hHDoPT8iUz2log46tTS8ycTrhaIwizguIXYNV7edjjE=; b=JCCtu2wGVFJZgpEGTqAkc+Hdcsyxk5AXJ5mP1deFHLUiIHDF/bvi7ZyonumSV0sgrx mdcJlXdIjdFtNWVPiiNLY1laaueR1B5lcsmBy3MnQ8nJq2zRefSRDb0uMGsI12Umtcyd /Yz3ZzCMiCFUWdrhNteirK40vSDbjeG47nKTdwJNkvm9e6RSMmAwpA160vAH3sg8jB8d VpNE3CBGzYQsbgxwnRpxqpMUmmu0MGHart5Y9QS4+N00Kv+VRw5qBqaYEd4ZlLf5aIyM 1SXiTikEp5m5jwLQHflvVxE3wwgwgzk35j5oPcYmB5QfP90G6MnOatgLfGwmoIuK8/8A 52yA== 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:mime-version :content-transfer-encoding; bh=hHDoPT8iUz2log46tTS8ycTrhaIwizguIXYNV7edjjE=; b=DJ+k6dB4qtuThuBaiu2jVN8s3OhcOrgJxfX5gKAvu0jUo2M+CY6Vk1X+STf607wdFJ 9gXFy0Ci8sGIVz+VcPM9p0CfO1Q5mwm2yHEhJOCDWSp1PFWxOU6Q8Q98OI7fxN3mo6fG nSm/p5HG+hakixw+9dDAAL0kHMTOWxeIxjioaU2XIRiqPiR6ua9f3vIUX+A/QJ6Qpcsw CfhB09v/MYSC+lIxE7tyPFEHFFwZw0r+9I7GTcPeKP9xWNIWOrW6gidgfj8tv2j1hryv Y9Q6R9J/Q/oxiR5KeJOo3sTUY3a00oeq5NoqjPvqd8U+K8p828y+xw8MVeE7kabcwFLO atFg== X-Gm-Message-State: AOAM532T8RvPSNbLh2DoybhVmX5CDZPoaW/bWiT+GLAO1eTaXG0rYKds DsO8kBI3ac8Pf37VB6B23+2IAQ== X-Google-Smtp-Source: ABdhPJwyp3Apk1jDojmHuKYLDDgPLaspCJ6RGNGPcbNEiWvYDS/C/H03DJrEohUbtDrkJ7c5bT6abA== X-Received: by 2002:a05:6402:268f:: with SMTP id w15mr4187001edd.206.1625548114831; Mon, 05 Jul 2021 22:08:34 -0700 (PDT) Received: from jwang-Latitude-5491.fritz.box ([2001:16b8:499a:fc00:3532:1608:3da2:d7a9]) by smtp.gmail.com with ESMTPSA id t11sm1967582edr.34.2021.07.05.22.08.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jul 2021 22:08:34 -0700 (PDT) From: Jack Wang To: linux-edac@vger.kernel.org Cc: yazen.ghannam@amd.com, bp@alien8.de, tony.luck@intel.com, mchehab@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] EDAC/amd64: Do not load EDAC driver when running as a guest Date: Tue, 6 Jul 2021 07:08:33 +0200 Message-Id: <20210706050833.9852-1-jinpu.wang@ionos.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Similar to commit f0a029fff4a5 ("EDAC/Intel: Do not load EDAC driver when running as a guest") There's little to no point in loading an EDAC driver running in a guest. Add a check in each of the Intel EDAC drivers for X86_FEATURE_HYPERVISOR and simply return -ENODEV in the init routine. Signed-off-by: Jack Wang --- drivers/edac/amd64_edac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index f0d8f60acee1..cdb14575ef31 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -3942,6 +3942,9 @@ static int __init amd64_edac_init(void) if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -EBUSY; + if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR)) + return -ENODEV; + if (!x86_match_cpu(amd64_cpuids)) return -ENODEV; -- 2.25.1