Received: by 2002:a25:ca44:0:0:0:0:0 with SMTP id a65csp1418306ybg; Wed, 29 Jul 2020 13:46:51 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzVq34Rdwxjnt6oEIp69D2tBRpeUvBqJx8u2F6ZQm6PJcqhCiAnnSNng5TQK9wtmQfUnBda X-Received: by 2002:a17:906:194b:: with SMTP id b11mr193832eje.28.1596055611460; Wed, 29 Jul 2020 13:46:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1596055611; cv=none; d=google.com; s=arc-20160816; b=O43gtalYdDiyEfHMpmmfeu8F5Umb9JR2BcbBRuim6NCXNC6MU1TE6oBHboZsyoV4/x 2e5gg1knOb2aoUihL6/LcrC2nnqwZLqMSOMs3cGNw0NMyjXf8MU9O4JuEXujswqbTOzY N+c4kP9wHRvnp78wUChxqzsmajZs07+xY/uMEdWVtVyiGcZy5ywMIPnzT4i/XNJWeqvD Ijzf1297F235+aBivPsoHBOswjLHIcrPb9QALondajlXDCAFef3aW9eAM0PcFvz4Crf3 1//qGdmtZiXuy3FlE/5ph1WGkR/lM3x+IDQdOjJchjViE8UzIWKEFjJaob2U36n7bYpW qjNw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:ironport-sdr :dkim-signature; bh=BzuyOP1b4PztqG2V1+OAhXQVg8bMxv07rK/gpE40p2c=; b=ASEem0+33RHY6DkN5JwSnscO4RLv/hYuG48FshVXDNOalwALCxEVe7/cEVH6SUUaNA 5rjF8utQivSVLmEZjFGDv0IVywrtTh2Zu1UI0fxpM+qM10ZGaqsybXlcsWXWO+ImDAl2 MZdqZMFX7iuWR/fHWXUr50JlR8LxuBpo8/RaxHjRFv4DFyqofXFwx5+IYSwrTXV1yRVR ezsvhh9tzVtS9QnYlMBOg24XN5JnW0CQ9SD8xK0nBEsJy9zEZHUM7DVS7qTQNSUkEh14 DuPgFklG289jcmjE73QZkYoInPdmiI2C+0TyNbWDiIl9SrJg+N8SiOfTyzPHIMU7Duge ibew== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=BfiaRBCH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id i14si1866539ejr.116.2020.07.29.13.46.29; Wed, 29 Jul 2020 13:46:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=BfiaRBCH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727016AbgG2UqD (ORCPT + 99 others); Wed, 29 Jul 2020 16:46:03 -0400 Received: from smtp-fw-6001.amazon.com ([52.95.48.154]:22022 "EHLO smtp-fw-6001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726628AbgG2UqC (ORCPT ); Wed, 29 Jul 2020 16:46:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1596055562; x=1627591562; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=BzuyOP1b4PztqG2V1+OAhXQVg8bMxv07rK/gpE40p2c=; b=BfiaRBCHrsJZ09hdEQxkXJxdRQWZR4tRmqqjZQU4MCn5YMmHqz1kbZx/ oJDy/0XFYIQbkYg/H+n9fF/5oK7iDG9/xrJYr89rF+7shtHkxetIZy72s fPDKXr0k67Fm3Gn6YCXAt6bIYjL8b4/2+6IgrPGMRIzL1CejxWoOGGSAA 8=; IronPort-SDR: /RUd/420zsosAuUM9sE4DXLd+Nryo7ZKl0qL4+pRQsMOfZgPw64I72doI6iBdCFaXTArb7tubx 1V0pLA8Iwbqw== X-IronPort-AV: E=Sophos;i="5.75,411,1589241600"; d="scan'208";a="46346182" Received: from iad12-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-1a-807d4a99.us-east-1.amazon.com) ([10.43.8.6]) by smtp-border-fw-out-6001.iad6.amazon.com with ESMTP; 29 Jul 2020 20:46:01 +0000 Received: from EX13MTAUWC001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1a-807d4a99.us-east-1.amazon.com (Postfix) with ESMTPS id B8801A25F4; Wed, 29 Jul 2020 20:45:57 +0000 (UTC) Received: from EX13D20UWC002.ant.amazon.com (10.43.162.163) by EX13MTAUWC001.ant.amazon.com (10.43.162.135) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 29 Jul 2020 20:45:56 +0000 Received: from 38f9d3867b82.ant.amazon.com (10.43.160.100) by EX13D20UWC002.ant.amazon.com (10.43.162.163) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 29 Jul 2020 20:45:53 +0000 Subject: Re: [PATCH] KVM: x86: Deflect unknown MSR accesses to user space To: Jim Mattson CC: Aaron Lewis , Vitaly Kuznetsov , Paolo Bonzini , Jonathan Corbet , Sean Christopherson , Wanpeng Li , Joerg Roedel , kvm list , , LKML , "Raslan, KarimAllah" References: <20200728004446.932-1-graf@amazon.com> <87d04gm4ws.fsf@vitty.brq.redhat.com> <14035057-ea80-603b-0466-bb50767f9f7e@amazon.com> <69d8c4cd-0d36-0135-d1fc-0af7d81ce062@amazon.com> From: Alexander Graf Message-ID: <13877428-be3a-85a8-bcdc-3a21872ba0e6@amazon.com> Date: Wed, 29 Jul 2020 22:45:51 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.43.160.100] X-ClientProxiedBy: EX13D23UWA001.ant.amazon.com (10.43.160.68) To EX13D20UWC002.ant.amazon.com (10.43.162.163) Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org CgpPbiAyOS4wNy4yMCAyMjozNywgSmltIE1hdHRzb24gd3JvdGU6Cj4gCj4gT24gV2VkLCBKdWwg MjksIDIwMjAgYXQgMToyOSBQTSBBbGV4YW5kZXIgR3JhZiA8Z3JhZkBhbWF6b24uY29tPiB3cm90 ZToKPiAKPj4gTWVhbndoaWxlLCBJIGhhdmUgY2xlYW5lZCB1cCBLYXJpbSdzIG9sZCBwYXRjaCB0 byBhZGQgYWxsb3cgbGlzdGluZyB0bwo+PiBLVk0gYW5kIHdvdWxkIHBvc3QgaXQgaWYgQWFyb24g ZG9lc24ndCBiZWF0IG1lIHRvIGl0IDopLgo+IAo+IElkZWFsbHksIHRoaXMgYmVjb21lcyBhIGNv bGxhYm9yYXRpb24gcmF0aGVyIHRoYW4gYSByYWNlIHRvIHRoZQo+IGZpbmlzaC4gSSdkIGxpa2Ug dG8gc2VlIGJvdGggcHJvcG9zYWxzLCBzbyB0aGF0IHdlIGNhbiB0YWtlIHRoZSBiZXN0Cj4gcGFy dHMgb2YgZWFjaCEKPiAKCk9oLCBkZWZpbml0ZWx5ISBJJ20gbm90IHJlYWxseSBtYXJyaWVkIHRv IEthcmltJ3MgcGF0Y2ggaGVyZSwgaXQgd2FzIApqdXN0IHNpbXBseSB0aGVyZSBhbmQgaXMgZGVh ZCBzaW1wbGUuCgpEbyB5b3UgaGF2ZSBhIHJvdWdoIEVUQSBmb3IgQWFyb24ncyBwYXRjaCBzZXQg eWV0PyA6KQoKCkFsZXgKCgoKQW1hem9uIERldmVsb3BtZW50IENlbnRlciBHZXJtYW55IEdtYkgK S3JhdXNlbnN0ci4gMzgKMTAxMTcgQmVybGluCkdlc2NoYWVmdHNmdWVocnVuZzogQ2hyaXN0aWFu IFNjaGxhZWdlciwgSm9uYXRoYW4gV2Vpc3MKRWluZ2V0cmFnZW4gYW0gQW10c2dlcmljaHQgQ2hh cmxvdHRlbmJ1cmcgdW50ZXIgSFJCIDE0OTE3MyBCClNpdHo6IEJlcmxpbgpVc3QtSUQ6IERFIDI4 OSAyMzcgODc5CgoK