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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 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 3F625C34047 for ; Wed, 19 Feb 2020 11:36:39 +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 0B88C24654 for ; Wed, 19 Feb 2020 11:36:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=aepfle.de header.i=@aepfle.de header.b="K4yTKVC/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B88C24654 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aepfle.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49720 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j4Neg-0007BW-4q for qemu-devel@archiver.kernel.org; Wed, 19 Feb 2020 06:36:38 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40704) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j4Ndl-0006hj-Vc for qemu-devel@nongnu.org; Wed, 19 Feb 2020 06:35:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j4Ndk-0006ac-QP for qemu-devel@nongnu.org; Wed, 19 Feb 2020 06:35:41 -0500 Received: from mo6-p01-ob.smtp.rzone.de ([2a01:238:20a:202:5301::11]:16467) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j4Ndk-0006X5-3W for qemu-devel@nongnu.org; Wed, 19 Feb 2020 06:35:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1582112137; s=strato-dkim-0002; d=aepfle.de; h=References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=WGdI8I6Uos/rom+dJCvaGJiG0CIinRsTshzGtpXwpe0=; b=K4yTKVC/OCdEdb8OEk1w21T5PHYv7V5o6646JnzWStv9XycQxFQ7uMl1DJsj9zuuon QbmL2+NjxYxg2xN0PgF5CJoIFJgwWMoxIfg58nWAqKKB6VThqnQX5vLABp4C1qEaTwsr xsUV7WAB3SEGzekq7K1OeM3VpTkx23n+A/mrn7mlMnwjIkqtuhnQPDU0SWVoj2xuin4q VYseE+vRcNEconjba9hSZ+tyC+7Z11qVl8LyxXl/MLMSF/279DHJezznDrT+FWkqSBSQ +gb4D9g81kzIBanrYG20X4mFdDidEVHuHx9rYKyYzexEZiYXXU7Ft44wnAwLRj61Q3XM 8DXw== X-RZG-AUTH: ":P2EQZWCpfu+qG7CngxMFH1J+3q8wa/QED/SSGq+wjGiUC4AUztn93FPS2dyuYMlkjQ==" X-RZG-CLASS-ID: mo00 Received: from sender by smtp.strato.de (RZmta 46.1.12 SBL|AUTH) with ESMTPSA id 605caew1JBZaHcZ (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Wed, 19 Feb 2020 12:35:36 +0100 (CET) Date: Wed, 19 Feb 2020 12:35:30 +0100 From: Olaf Hering To: Paolo Bonzini Subject: Re: [PATCH v2] hw/i386: disable smbus migration for xenfv Message-ID: <20200219123530.11064fc5.olaf@aepfle.de> In-Reply-To: <0335edd2-3d33-88f8-2ab4-4791f7289885@redhat.com> References: <20200113174521.3336-1-olaf@aepfle.de> <20200116180321.24968-1-olaf@aepfle.de> <0335edd2-3d33-88f8-2ab4-4791f7289885@redhat.com> X-Mailer: Claws Mail 2019.12.31 (GTK+ 2.24.32; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/4RTwmXpjc1lcdKDJREWIMXv"; protocol="application/pgp-signature" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a01:238:20a:202:5301::11 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: Stefano Stabellini , Eduardo Habkost , "Michael S. Tsirkin" , Paul Durrant , "open list:All patches CC here" , Anthony Perard , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --Sig_/4RTwmXpjc1lcdKDJREWIMXv Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Am Thu, 16 Jan 2020 19:26:39 +0100 schrieb Paolo Bonzini : > On 16/01/20 19:03, Olaf Hering wrote: > [...] =20 >=20 > This patch is wrong; xenfv does not support cross-version migration > compatibility. Even if the migration stream does not change, the > hardware exposed to the guest will. >=20 > My understanding is that Xen is able to use "-M > pc-i440fx-VERSION,accel=3Dxen". The presence of the version in the > machine type guarantees that the migration stream is compatible and that > the hardware exposed to the guest is the same on the source and destinati= on. The current idea is to make 'xenfv' a copy of 'pc-i440fx-3.1'. But is this actually the desired behavior? Lets assume xenfv_machine_options calls pc_i440fx_5_0_machine_options. What impact that that have on the result of pc_init1()? Is any of the things done by pc_i440fx_5_0_machine_options and pc_i440fx_machine_options a desired, or even breaking, change for the current result of pc_xen_hvm_init? Also, do the calls to compat_props_add have negative impact on compatibility for running domUs? Olaf --Sig_/4RTwmXpjc1lcdKDJREWIMXv Content-Type: application/pgp-signature Content-Description: Digitale Signatur von OpenPGP -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEE97o7Um30LT3B+5b/86SN7mm1DoAFAl5NHYIACgkQ86SN7mm1 DoDclBAAm3Pe2dW2GbiN4lunCx0//5Kol04JQv9LugdEnVcr3KuqsYjfqA0X9Lqf iGOunf1BM1uiwuaNmFJmtQAM3HSDQm6FfRXgeONQaBdO3Mrx0FJl4PDQycL7y1PG b5cCaLJ8VkZXZP3IWydhAcs4JQeP/sxrmr/MLx0hJtY6HQhx1Xf5UQ3wy13+UMjk ZkdpXYLd0NAeQdM3UrU7r3MDlTBU4jASB1mOwU9SN5ctJ+NM37yTkZcRBU4yVvBF ZO6SjNdoOZ9pIOvZgO0xbCDoxdlpGgKgYsk4Z/prPHDXlti8gpzpr70KAlwuPCca nHA1GEDpvMSmRtWccdC8WMFemkeDGn/d48TBf2WfrJvo1NqLLfGLxOm777s3FgVQ GMQHX7IM3SW6gz5RHdPwJgdMuPs3otoQDzz3ZAgaOHufE4t6Uo2myWAvbyxVZcOR L79BnCNJuWYJUU30bW9KOcAKaw9dLayWRbyXNWtvMFyfpNKaR7lVYzoHKmc4SaGa zcyjKhkwU1kHCGZUrAYgf/l8DaDcK4+Tm8KJZoMJOXXksc570n7UAAiImnb0opE3 dv9hvwde/y3LeUe8a7tjVXrBu8xeM+O6Dzr+XQ+U7FVnv/7wlFvvngdMmnc/Y6km CZA/3Bw2r7O2U6KGgObKJTQ6KEqkJiqad89Z6GzDs9FT4g8frHM= =rYPp -----END PGP SIGNATURE----- --Sig_/4RTwmXpjc1lcdKDJREWIMXv--