From nobody Thu May 2 04:37:25 2024 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 (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1544465060544583.6176285736872; Mon, 10 Dec 2018 10:04:20 -0800 (PST) Received: from localhost ([::1]:34124 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWPuU-0003Yr-4Y for importer@patchew.org; Mon, 10 Dec 2018 13:04:02 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54943) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWPtX-00038W-5Q for qemu-devel@nongnu.org; Mon, 10 Dec 2018 13:03:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gWPtP-0004q6-RJ for qemu-devel@nongnu.org; Mon, 10 Dec 2018 13:03:01 -0500 Received: from mx1.redhat.com ([209.132.183.28]:36325) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gWPtO-0004mz-DE for qemu-devel@nongnu.org; Mon, 10 Dec 2018 13:02:55 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 677A181F09; Mon, 10 Dec 2018 18:02:52 +0000 (UTC) Received: from localhost (ovpn-116-63.gru2.redhat.com [10.97.116.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id EAB9B600D6; Mon, 10 Dec 2018 18:02:51 +0000 (UTC) From: Eduardo Habkost To: qemu-devel@nongnu.org Date: Mon, 10 Dec 2018 16:02:50 -0200 Message-Id: <20181210180250.31299-1-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 10 Dec 2018 18:02:52 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH] i386: Add "stibp" flag name 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: Paolo Bonzini , Eduardo Habkost , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The STIBP flag may be supported by the host KVM module, so QEMU can allow it to be configured manually, and it can be exposed to guests when using "-cpu host". No additional migration code is required because the whole contents of spec_ctrl is already migrated in the "cpu/spec_ctrl" section. Corresponding KVM patch was submitted at: https://lore.kernel.org/lkml/20181205191956.31480-1-ehabkost@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 f81d35e1f9..079678f282 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1042,7 +1042,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORD= S] =3D { NULL, NULL, NULL, NULL, NULL, NULL, "pconfig", NULL, NULL, NULL, NULL, NULL, - NULL, NULL, "spec-ctrl", NULL, + NULL, NULL, "spec-ctrl", "stibp", NULL, "arch-capabilities", NULL, "ssbd", }, .cpuid =3D { --=20 2.18.0.rc1.1.g3f1ff2140