From nobody Fri Nov 7 01:54:29 2025 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 1545401121466703.3334387625372; Fri, 21 Dec 2018 06:05:21 -0800 (PST) Received: from localhost ([::1]:45908 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gaLQQ-0002yk-5y for importer@patchew.org; Fri, 21 Dec 2018 09:05:14 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42303) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gaLOn-0002SC-7Q for qemu-devel@nongnu.org; Fri, 21 Dec 2018 09:03:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gaLOj-0007ma-7Y for qemu-devel@nongnu.org; Fri, 21 Dec 2018 09:03:33 -0500 Received: from mx1.redhat.com ([209.132.183.28]:42216) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gaLOj-0007l3-1G for qemu-devel@nongnu.org; Fri, 21 Dec 2018 09:03:29 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3C2533DBD2; Fri, 21 Dec 2018 14:03:26 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.43.2.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id A8D8F2C25C; Fri, 21 Dec 2018 14:03:22 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Date: Fri, 21 Dec 2018 15:03:21 +0100 Message-Id: <20181221140321.7750-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Fri, 21 Dec 2018 14:03:26 +0000 (UTC) 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: 209.132.183.28 Subject: [Qemu-devel] [PATCH RFC] i386: Enable NPT and NRIPSAVE for Epyc CPUs 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 , Marcelo Tosatti , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Eduardo Habkost , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Epyc CPUs support NPT and NRIPSAVE features and KVM exposes these when present. Add them to EPYC and EPYC-IBPB cpu models. Signed-off-by: Vitaly Kuznetsov --- - RFC part: I'm not sure when these features first appeared, we may want to modify some Opteron_* models too. --- target/i386/cpu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 677a3bd5fb..0a10fbeccc 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -2843,6 +2843,8 @@ static X86CPUDefinition builtin_x86_defs[] =3D { CPUID_XSAVE_XGETBV1, .features[FEAT_6_EAX] =3D CPUID_6_EAX_ARAT, + .features[FEAT_SVM] =3D + CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE, .xlevel =3D 0x8000001E, .model_id =3D "AMD EPYC Processor", .cache_info =3D &epyc_cache_info, @@ -2891,6 +2893,8 @@ static X86CPUDefinition builtin_x86_defs[] =3D { CPUID_XSAVE_XGETBV1, .features[FEAT_6_EAX] =3D CPUID_6_EAX_ARAT, + .features[FEAT_SVM] =3D + CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE, .xlevel =3D 0x8000001E, .model_id =3D "AMD EPYC Processor (with IBPB)", .cache_info =3D &epyc_cache_info, --=20 2.19.2