From nobody Fri Nov 7 03:38:21 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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 209.51.188.17 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 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1548086342076736.420532771964; Mon, 21 Jan 2019 07:59:02 -0800 (PST) Received: from localhost ([127.0.0.1]:55585 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1glbyX-0004Nb-5x for importer@patchew.org; Mon, 21 Jan 2019 10:59:01 -0500 Received: from eggs.gnu.org ([209.51.188.92]:52455) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1glbxb-0003zG-QV for qemu-devel@nongnu.org; Mon, 21 Jan 2019 10:58:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1glbxa-0005YH-VI for qemu-devel@nongnu.org; Mon, 21 Jan 2019 10:58:03 -0500 Received: from mx1.redhat.com ([209.132.183.28]:35452) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1glbxa-0005XQ-Na for qemu-devel@nongnu.org; Mon, 21 Jan 2019 10:58:02 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DE60388E6D; Mon, 21 Jan 2019 15:50:54 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.43.2.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 649A168B00; Mon, 21 Jan 2019 15:50:53 +0000 (UTC) From: Vitaly Kuznetsov To: qemu-devel@nongnu.org Date: Mon, 21 Jan 2019 16:50:51 +0100 Message-Id: <20190121155051.5628-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Mon, 21 Jan 2019 15:50:54 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2] i386: Enable NPT and NRIPSAVE for AMD 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" Modern AMD CPUs support NPT and NRIPSAVE features and KVM exposes these when present. NRIPSAVE apeared somewhere in Opteron_G3 lifetime (e.g. QuadCore AMD Opteron 2378 has is but QuadCore AMD Opteron HE 2344 doesn't), NPT was introduced a bit earlier. Add the FEAT_SVM leaf to Opteron_G4/G5 and EPYC/EPYC-IBPB cpu models. Signed-off-by: Vitaly Kuznetsov Reviewed-by: Eduardo Habkost --- Changes since v1: - add npt=3Doff,nrip-save=3Doff to pc_compat_3_1 [Eduardo Habkost] --- hw/i386/pc.c | 8 ++++++++ target/i386/cpu.c | 8 ++++++++ 2 files changed, 16 insertions(+) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 73d688f842..9fc80a9f19 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -114,7 +114,15 @@ GlobalProperty pc_compat_3_1[] =3D { { "intel-iommu", "dma-drain", "off" }, { "Opteron_G3" "-" TYPE_X86_CPU, "rdtscp", "off" }, { "Opteron_G4" "-" TYPE_X86_CPU, "rdtscp", "off" }, + { "Opteron_G4" "-" TYPE_X86_CPU, "npt", "off" }, + { "Opteron_G4" "-" TYPE_X86_CPU, "nrip-save", "off" }, { "Opteron_G5" "-" TYPE_X86_CPU, "rdtscp", "off" }, + { "Opteron_G5" "-" TYPE_X86_CPU, "npt", "off" }, + { "Opteron_G5" "-" TYPE_X86_CPU, "nrip-save", "off" }, + { "EPYC" "-" TYPE_X86_CPU, "npt", "off" }, + { "EPYC" "-" TYPE_X86_CPU, "nrip-save", "off" }, + { "EPYC-IBPB" "-" TYPE_X86_CPU, "npt", "off" }, + { "EPYC-IBPB" "-" TYPE_X86_CPU, "nrip-save", "off" }, { "Skylake-Client" "-" TYPE_X86_CPU, "mpx", "on" }, { "Skylake-Client-IBRS" "-" TYPE_X86_CPU, "mpx", "on" }, { "Skylake-Server" "-" TYPE_X86_CPU, "mpx", "on" }, diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 2f5412592d..d170637599 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -2801,6 +2801,8 @@ static X86CPUDefinition builtin_x86_defs[] =3D { CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM, + .features[FEAT_SVM] =3D + CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE, /* no xsaveopt! */ .xlevel =3D 0x8000001A, .model_id =3D "AMD Opteron 62xx class CPU", @@ -2831,6 +2833,8 @@ static X86CPUDefinition builtin_x86_defs[] =3D { CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM, + .features[FEAT_SVM] =3D + CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE, /* no xsaveopt! */ .xlevel =3D 0x8000001A, .model_id =3D "AMD Opteron 63xx class CPU", @@ -2877,6 +2881,8 @@ 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, @@ -2925,6 +2931,8 @@ 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 2.20.1