From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31DCDC433ED for ; Tue, 13 Apr 2021 19:39:57 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BAF17613C8 for ; Tue, 13 Apr 2021 19:39:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BAF17613C8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lWOt9-0005Jp-MO for qemu-devel@archiver.kernel.org; Tue, 13 Apr 2021 15:39:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60886) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lWOsX-0004se-Hd for qemu-devel@nongnu.org; Tue, 13 Apr 2021 15:39:17 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:24781) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lWOsV-0002mR-7v for qemu-devel@nongnu.org; Tue, 13 Apr 2021 15:39:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618342753; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UDehn1qNL6/y6XJ8qrtd8i30Q2lrtk2jGTXHSArdyOI=; b=iQcVGGrbuioEGIpO2FfLHPQErftKF0oLl28ntEy77BoJEh1YwI/Po425uLKiprORlJfDp3 QTkGL833rr9XJjzT5QVcMxJ+MmaAnOGJUib01tcbT5rqFpyYdzIQDsEgVUKegL/tptMN21 3DCPMu95PpGR2s76W9x7+ZqoipHjY6k= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-364-z3TSK8FUMSKLSKQGJX1OQQ-1; Tue, 13 Apr 2021 15:39:11 -0400 X-MC-Unique: z3TSK8FUMSKLSKQGJX1OQQ-1 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 065D28030BB; Tue, 13 Apr 2021 19:39:11 +0000 (UTC) Received: from localhost (ovpn-117-179.rdu2.redhat.com [10.10.117.179]) by smtp.corp.redhat.com (Postfix) with ESMTP id 98C2419C46; Tue, 13 Apr 2021 19:39:10 +0000 (UTC) Date: Tue, 13 Apr 2021 15:39:10 -0400 From: Eduardo Habkost To: Vitaly Kuznetsov Subject: Re: [PATCH] target/i386: Add CPU model versions supporting 'xsaves' Message-ID: <20210413193910.72bvoyhbw2ma5nf3@habkost.net> References: <20210412073952.860944-1-vkuznets@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210412073952.860944-1-vkuznets@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=ehabkost@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=ehabkost@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Paolo Bonzini , Richard Henderson , qemu-devel@nongnu.org, Wen Pu , "Dr . David Alan Gilbert" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, Apr 12, 2021 at 09:39:52AM +0200, Vitaly Kuznetsov wrote: > Hyper-V 2016 refuses to boot on Skylake+ CPU models because they lack > 'xsaves'/'vmx-xsaves' features and this diverges from real hardware. The > same issue emerges with AMD "EPYC" CPU model prior to version 3 which got > 'xsaves' added. EPYC-Rome/EPYC-Milan CPU models have 'xsaves' enabled from > the very beginning so the comment blaming KVM to explain why other CPUs > lack 'xsaves' is likely outdated. > > Signed-off-by: Vitaly Kuznetsov I'm queueing this for 6.1. Thanks! -- Eduardo