From nobody Sun Apr 28 20:26:42 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.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 (zohomail.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=nutanix.com ARC-Seal: i=1; a=rsa-sha256; t=1576660122; cv=none; d=zohomail.com; s=zohoarc; b=EUxD7+Tt4Xb4MfqU3ZMKptv6lpJZZq1YcNrlvdHxslaKDs9OCem9SU1kHRy3iDUg7Nn5V4JSESGbPA96+9sBswMavrDq2qwKh9sHOFcKd2y86z3hJ3kTMQJ1vHmjuQ+wGk1wdVhjg6vEpfa0TOIcj7Y5XjXIvM9S9AOrxWfHrGg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1576660122; h=Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:Sender:Subject:To; bh=6osNdToauDGpquU+kG3Z785IA3CyNwM3P/TG9k2NRHY=; b=WuSate2bhHwW2M/bW1HfzAFwv9vFaX3AUOQ0R4+P30tMtq/D6Y3LqAyUrcUgq9KPPtsIPnd2Vsq4erZZSOZ/MlhDnbvsWghieYRswiBVaOzLmgaV9R5vYyxClHiaM1hTPl8lokoXpNf217wssjp9zgScLMPGZpA83QUwV0gAaAs= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1576660122273945.8341006776751; Wed, 18 Dec 2019 01:08:42 -0800 (PST) Received: from localhost ([::1]:51522 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ihVJw-0006rA-KL for importer@patchew.org; Wed, 18 Dec 2019 04:08:40 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40743) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ihVJI-0006LR-VU for qemu-devel@nongnu.org; Wed, 18 Dec 2019 04:08:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ihVJG-0005pg-R4 for qemu-devel@nongnu.org; Wed, 18 Dec 2019 04:08:00 -0500 Received: from [192.146.154.1] (port=62175 helo=mcp01.nutanix.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ihVJG-0005lw-I7 for qemu-devel@nongnu.org; Wed, 18 Dec 2019 04:07:58 -0500 Received: from ani-devvm.user.nutanix.com (ani-sinha.user.nutanix.com [10.4.194.34]) by mcp01.nutanix.com (Postfix) with ESMTP id 5CD631007A4B; Wed, 18 Dec 2019 09:07:57 +0000 (UTC) From: Ani Sinha To: pbonzini@redhat.com, rth@twiddle.net, ehabkost@redhat.com Subject: [PATCH] i386: pass CLZERO to guests with EPYC CPU model on AMD ZEN platform Date: Wed, 18 Dec 2019 01:05:33 -0800 Message-Id: <1576659933-37123-1-git-send-email-ani.sinha@nutanix.com> X-Mailer: git-send-email 1.7.1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 192.146.154.1 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ani.sinha@nutanix.com, qemu-devel@nongnu.org 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" CLZERO CPUID should be passed on to the guests that use EPYC or EPYC-IBPB C= PU model when the AMD ZEN based host supports it. This change makes it recogni= ze this CPUID for guests which use EPYC or EPYC-IBPB CPU model. Signed-off-by: Ani Sinha --- target/i386/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 69f518a..55f0691 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -3813,6 +3813,8 @@ static X86CPUDefinition builtin_x86_defs[] =3D { CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM | CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_TOPOEXT, + .features[FEAT_8000_0008_EBX] =3D + CPUID_8000_0008_EBX_CLZERO, .features[FEAT_7_0_EBX] =3D CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AV= X2 | CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED= | --=20 1.9.4