From nobody Sun Feb 8 14:10:59 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1526939819242192.97705783893775; Mon, 21 May 2018 14:56:59 -0700 (PDT) Received: from localhost ([::1]:52597 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fKsnW-0003G7-B4 for importer@patchew.org; Mon, 21 May 2018 17:56:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41768) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fKslF-00024x-Dh for qemu-devel@nongnu.org; Mon, 21 May 2018 17:54:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fKslE-00063D-AG for qemu-devel@nongnu.org; Mon, 21 May 2018 17:54:33 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:44420 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fKslE-000632-6F for qemu-devel@nongnu.org; Mon, 21 May 2018 17:54:32 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AAF61401DEA6; Mon, 21 May 2018 21:54:31 +0000 (UTC) Received: from t460.redhat.com (unknown [10.33.36.3]) by smtp.corp.redhat.com (Postfix) with ESMTP id 09245215CDA7; Mon, 21 May 2018 21:54:29 +0000 (UTC) From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Date: Mon, 21 May 2018 22:54:23 +0100 Message-Id: <20180521215424.13520-3-berrange@redhat.com> In-Reply-To: <20180521215424.13520-1-berrange@redhat.com> References: <20180521215424.13520-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Mon, 21 May 2018 21:54:31 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Mon, 21 May 2018 21:54:31 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'berrange@redhat.com' RCPT:'' Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH 2/3] i386: define the AMD 'virt-ssbd' CPUID feature bit (CVE-2018-3639) X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , kvm@vger.kernel.org, Konrad Rzeszutek Wilk , Marcelo Tosatti , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" From: Konrad Rzeszutek Wilk AMD Zen expose the Intel equivalant to Speculative Store Bypass Disable via the 0x80000008_EBX[25] CPUID feature bit. This needs to be exposed to guest OS to allow them to protect against CVE-2018-3639. Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: Daniel P. Berrang=C3=A9 Signed-off-by: Daniel P. Berrang=C3=A9 --- target/i386/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index a1185b17d1..d95310ffd4 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -836,7 +836,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS]= =3D { "ibpb", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, - NULL, NULL, NULL, NULL, + NULL, "virt-ssbd", NULL, NULL, NULL, NULL, NULL, NULL, }, .cpuid_eax =3D 0x80000008, --=20 2.17.0