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=-5.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 2A3ABC433DB for ; Tue, 16 Mar 2021 12:42:09 +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 A530865036 for ; Tue, 16 Mar 2021 12:42:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A530865036 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]:52474 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lM91T-0007Ol-J4 for qemu-devel@archiver.kernel.org; Tue, 16 Mar 2021 08:42:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46148) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lM909-0006pF-D4 for qemu-devel@nongnu.org; Tue, 16 Mar 2021 08:40:45 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:43433) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lM906-00074G-L1 for qemu-devel@nongnu.org; Tue, 16 Mar 2021 08:40:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615898440; h=from:from:reply-to: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=QxVvmqDYkpZ08pPDTrS8KMyfVC9zVkYzgQ4wTFFKs6s=; b=V5C336VWar3y8l8VTbGlR7Iyg04fhyO6yh+xulBNFLXAkQegRzlkTWQnv3gZr/Ozf1LKlP sHnTeVO5EuxT6MRvM2NbSzh7K49ylUaNK4+x54muWWVlZtjgLsP1peBmnugX5mr6jxVJj1 qqontuiiYziU0Od/d+92i1i1y3aNWv4= 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-511-bct8rURkOYWw3ErT8M1mSA-1; Tue, 16 Mar 2021 08:40:33 -0400 X-MC-Unique: bct8rURkOYWw3ErT8M1mSA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7C17B800C78; Tue, 16 Mar 2021 12:40:32 +0000 (UTC) Received: from redhat.com (ovpn-115-185.ams2.redhat.com [10.36.115.185]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E44F55C261; Tue, 16 Mar 2021 12:40:30 +0000 (UTC) Date: Tue, 16 Mar 2021 12:40:28 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Igor Mammedov Subject: Re: Windows 10 won't run on default x86_64 machine anymore Message-ID: References: <20210315220526.GB1004959@private.email.ne.jp> <20210316133354.20460aca@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210316133354.20460aca@redhat.com> User-Agent: Mutt/2.0.5 (2021-01-21) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@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=216.205.24.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.25, 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_H3=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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: Reinoud Zandijk , qemu-devel@nongnu.org, Isaku Yamahata Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, Mar 16, 2021 at 01:33:54PM +0100, Igor Mammedov wrote: > On Mon, 15 Mar 2021 15:05:26 -0700 > Isaku Yamahata wrote: > > > On Mon, Mar 15, 2021 at 05:58:04PM +0100, > > Reinoud Zandijk wrote: > > > > > I think its better to revert this and fix Linux ;) or make it a selectable > > > feature as a workaround that's by default OFF :) > > > > Anyway here is a patch to flip the default. > > At the moment, this is compile-only tested to provide the change quickly > > and make discussion progress. > > > > From 50deeed38832ceccfb68f78dd66de5a1741b2897 Mon Sep 17 00:00:00 2001 > > Message-Id: <50deeed38832ceccfb68f78dd66de5a1741b2897.1615845421.git.isaku.yamahata@intel.com> > > From: Isaku Yamahata > > Date: Mon, 15 Mar 2021 14:42:33 -0700 > > Subject: [PATCH] ich9, piix4: flip default value for smm-compat > > > > Make default value for smm-compat of ich9, piix4 true to keep old > > behavior. > > To get new (and more conformance to ACPI spec) behavior, explicitly > > set "-global ICH9-LPC.smm-compat=off" or > > "-global PIIX4_PM.smm-compat=off". > > I'm not sure we should do that, > it's fine for non-versioned/new machine type to change in incompatible way with old images, > it's the job of old versioned machines types to maintain compatibility. > It's of cause pain for users if they use are unable to boot old image > on newest machine type, but we never promised that and if we made such > promise we would never be able to fix bugs. If this incompatibility with Windows 10 is confirmed though, I don't think it is viable for QEMU to ship the default machine type with settings that break Windows 10. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|