From patchwork Mon May 21 22:01:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eduardo Habkost X-Patchwork-Id: 10416837 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E090A6032B for ; Mon, 21 May 2018 22:02:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CC32528A72 for ; Mon, 21 May 2018 22:02:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C09B128AA8; Mon, 21 May 2018 22:02:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AEF9928A72 for ; Mon, 21 May 2018 22:02:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932168AbeEUWB7 (ORCPT ); Mon, 21 May 2018 18:01:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34348 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932089AbeEUWBx (ORCPT ); Mon, 21 May 2018 18:01:53 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C6A1330CCDCA; Mon, 21 May 2018 22:01:53 +0000 (UTC) Received: from localhost (ovpn-116-54.gru2.redhat.com [10.97.116.54]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7C496611C0; Mon, 21 May 2018 22:01:47 +0000 (UTC) From: Eduardo Habkost To: Peter Maydell Cc: Paolo Bonzini , kvm@vger.kernel.org, Eduardo Habkost , Marcel Apfelbaum , qemu-devel@nongnu.org, "Michael S. Tsirkin" , Richard Henderson , Marcelo Tosatti , Konrad Rzeszutek Wilk Subject: [PULL 3/3] i386: define the AMD 'virt-ssbd' CPUID feature bit (CVE-2018-3639) Date: Mon, 21 May 2018 19:01:33 -0300 Message-Id: <20180521220133.17445-4-ehabkost@redhat.com> In-Reply-To: <20180521220133.17445-1-ehabkost@redhat.com> References: <20180521220133.17445-1-ehabkost@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Mon, 21 May 2018 22:01:53 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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. Berrangé Signed-off-by: Daniel P. Berrangé Message-Id: <20180521215424.13520-3-berrange@redhat.com> Signed-off-by: Eduardo Habkost --- 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] = { "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 = 0x80000008,