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=-9.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 D58A4C433E0 for ; Sun, 2 Aug 2020 13:43:53 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 8405A2065C for ; Sun, 2 Aug 2020 13:43:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8405A2065C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4BKMgC73bVzDqQM for ; Sun, 2 Aug 2020 23:43:51 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4BKMT00SlMzDqHg for ; Sun, 2 Aug 2020 23:35:00 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 4BKMSz4l3Vz9sTK; Sun, 2 Aug 2020 23:34:59 +1000 (AEST) From: Michael Ellerman To: Michael Ellerman , Thadeu Lima de Souza Cascardo In-Reply-To: <20200728155039.401445-1-cascardo@canonical.com> References: <20200728155039.401445-1-cascardo@canonical.com> Subject: Re: [PATCH] selftests/powerpc: return skip code for spectre_v2 Message-Id: <159637523453.42190.2614653860464292630.b4-ty@ellerman.id.au> Date: Sun, 2 Aug 2020 23:34:59 +1000 (AEST) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Shuah Khan , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Tue, 28 Jul 2020 12:50:39 -0300, Thadeu Lima de Souza Cascardo wrote: > When running under older versions of qemu of under newer versions with old > machine types, some security features will not be reported to the guest. > This will lead the guest OS to consider itself Vulnerable to spectre_v2. > > So, spectre_v2 test fails in such cases when the host is mitigated and miss > predictions cannot be detected as expected by the test. > > [...] Applied to powerpc/next. [1/1] selftests/powerpc: Return skip code for spectre_v2 https://git.kernel.org/powerpc/c/f3054ffd71b5afd44832b2207e6e90267e1cd2d1 cheers