Received: by 10.223.176.5 with SMTP id f5csp4074524wra; Tue, 30 Jan 2018 01:34:19 -0800 (PST) X-Google-Smtp-Source: AH8x227H524lHv7Z2KY9g5Pdsx4cmEFdG+y9jObcHV4tYntw2sXo0NiCIwAQmtqqMNNh6YEfhENW X-Received: by 2002:a17:902:5269:: with SMTP id z96-v6mr9380553plh.392.1517304859765; Tue, 30 Jan 2018 01:34:19 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1517304859; cv=none; d=google.com; s=arc-20160816; b=ySxkphkMOeAHKUSj2+1a6q0A7+y9C03Er2aNF5f7Bgh/AQbfPKrMOqbtyahxczPSRZ mm008y7eUeSrf0aBYdedvO1dc73/SfLfTuSYf2ZNQlbUXJX7hTw3IBvs0rKCy3jfATQi gi13z3wX3wip8bdjMRPPuwsP6+YCivtDyxe7/PdcT/wlAGhque5xsIfs9L5sif6V9LDL 7eBpo9ULMWVBjUNnV5w6kfdp3TbAjtOrngxiX/SO3oIwOP1PSRUYX6524a9UhwphVYjK /qVPuAIsj2yBh8ATBf5Jpts7yKpCl6kZmWzHKR7VL+bvage6Uvn8fo3C19W5lX4yeGl+ 9e3w== 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:dkim-signature :arc-authentication-results; bh=ijSPhW0sszW3+0WaWeCy9fW/6wDIpdfCstbwYlW8EbM=; b=BfjIt2Zn7LKmz7EAl75ZRGHfa8ooNa6vsxKGW259oA7J85qdblaf+eYFPsTAh/bHVU grhfhAomADpaJ0370lgnbAzqatRlm3SAG2bcbDj7CCXK+Qb7YoFZvLQZND/hIe3Pn3Bm 2CwK5a25atpfM9Cma6MBNk297TyA4+1Qr+cLZ4xI1fQlzUxdSfu/To/8B9WS4MkJgxAm /+pUAB3aAafK4prr7FC5aEGlQjSJY77rQi45hqP3FWjA3ehPQXIKfvFr4XiwLvMkRR6f OSLmwNRo/8ScNLGu12nDi2/tYap8lgqh3e6/kxaLEkfi5cnMfb836BzCvPOs/hMuLslA Yq2A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=Q5yF4Wt0; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 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. [209.132.180.67]) by mx.google.com with ESMTP id 90si1573171pfs.287.2018.01.30.01.34.05; Tue, 30 Jan 2018 01:34:19 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=Q5yF4Wt0; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 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 S1751677AbeA3JdK (ORCPT + 99 others); Tue, 30 Jan 2018 04:33:10 -0500 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:1869 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751423AbeA3JdF (ORCPT ); Tue, 30 Jan 2018 04:33:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1517304785; x=1548840785; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=ijSPhW0sszW3+0WaWeCy9fW/6wDIpdfCstbwYlW8EbM=; b=Q5yF4Wt0Xz4QxTD/3cApNRNLe8wtAEBHSWKB1x28zCJCtG3nUFXuf1Uw vB+4SfawTApZ8aAiEAXt5t9lGT7vuUV2Laz9tTVDGkjRZPCfkOkbho+hW kL7+QpOG4dfZOeBiuoiMO+M5FDX+TQl27hEKrP5ICGAxiQ76dTb3+Y2wk A=; X-IronPort-AV: E=Sophos;i="5.46,433,1511827200"; d="scan'208";a="591215045" Received: from sea3-co-svc-lb6-vlan3.sea.amazon.com (HELO email-inbound-relay-1d-2c665b5d.us-east-1.amazon.com) ([10.47.22.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 30 Jan 2018 09:33:00 +0000 Received: from EX13MTAUEA001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1d-2c665b5d.us-east-1.amazon.com (8.14.7/8.14.7) with ESMTP id w0U9Wl0N017323 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Tue, 30 Jan 2018 09:32:50 GMT Received: from EX13D01EUB003.ant.amazon.com (10.43.166.248) by EX13MTAUEA001.ant.amazon.com (10.43.61.82) with Microsoft SMTP Server (TLS) id 15.0.1236.3; Tue, 30 Jan 2018 09:32:48 +0000 Received: from [10.85.90.136] (10.43.162.124) by EX13D01EUB003.ant.amazon.com (10.43.166.248) with Microsoft SMTP Server (TLS) id 15.0.1236.3; Tue, 30 Jan 2018 09:32:37 +0000 Subject: Re: [PATCH v3 0/4] KVM: Expose speculation control feature to guests To: David Woodhouse , KarimAllah Ahmed , , , CC: Andi Kleen , Andrea Arcangeli , Andy Lutomirski , Arjan van de Ven , Ashok Raj , Asit Mallick , Borislav Petkov , Dan Williams , "Dave Hansen" , Greg Kroah-Hartman , "H . Peter Anvin" , Ingo Molnar , Janakarajan Natarajan , Joerg Roedel , Jun Nakajima , "Laura Abbott" , Linus Torvalds , Masami Hiramatsu , Paolo Bonzini , Peter Zijlstra , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , Thomas Gleixner , Tim Chen , Tom Lendacky References: <1517271028-15916-1-git-send-email-karahmed@amazon.de> <1517302830.18619.78.camel@infradead.org> From: KarimAllah Ahmed Message-ID: Date: Tue, 30 Jan 2018 10:32:31 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <1517302830.18619.78.camel@infradead.org> Content-Language: en-US X-Originating-IP: [10.43.162.124] X-ClientProxiedBy: EX13D08UWB003.ant.amazon.com (10.43.161.186) To EX13D01EUB003.ant.amazon.com (10.43.166.248) 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 T24gMDEvMzAvMjAxOCAxMDowMCBBTSwgRGF2aWQgV29vZGhvdXNlIHdyb3RlOgo+IAo+IAo+IE9u IFR1ZSwgMjAxOC0wMS0zMCBhdCAwMToxMCArMDEwMCwgS2FyaW1BbGxhaCBBaG1lZCB3cm90ZToK Pj4gQWRkIGRpcmVjdCBhY2Nlc3MgdG8gc3BlY3VsYXRpb24gY29udHJvbCBNU1JzIGZvciBLVk0g Z3Vlc3RzLiBUaGlzIGFsbG93cyB0aGUKPj4gZ3Vlc3QgdG8gcHJvdGVjdCBpdHNlbGYgYWdhaW5z dCBTcGVjdHJlIFYyIHVzaW5nIElCUlMrSUJQQiBpbnN0ZWFkIG9mIGEKPj4gcmV0cG9saW5lK0lC UEIgYmFzZWQgYXBwcm9hY2guCj4+Cj4+IEl0IGFsc28gZXhwb3NlcyB0aGUgQVJDSF9DQVBBQklM SVRJRVMgTVNSIHdoaWNoIGlzIGdvaW5nIHRvIGJlIHVzZWQgYnkgZnV0dXJlCj4+IEludGVsIHBy b2Nlc3NvcnMgdG8gaW5kaWNhdGUgUkRDTF9OTyBhbmQgSUJSU19BTEwuCj4gCj4gVGhhbmtzLiBJ IHRoaW5rIHlvdSd2ZSBhbHJlYWR5IGZpeGVkIHRoZSBTUEVDX0NUUkwgcGF0Y2ggaW4gdGhlIGdp dAo+IHRyZWUgc28gdGhhdCBpdCBhZGRzIEYoSUJSUykgdG8ga3ZtX2NwdWlkXzgwMDBfMDAwOF9l YnhfeDg2X2ZlYXR1cmVzLAo+IHJpZ2h0PwpZdXAsIHRoaXMgaXMgYWxyZWFkeSBmaXhlZCBpbiB0 aGUgdHJlZS4KCj4gCj4gVGhlIFNWTSBwYXJ0IG9mIEFzaG9rJ3MgSUJQQiBwYXRjaCBpcyBzdGls bCBleHBvc2luZyB0aGUgUFJFRF9DTUQgTVNSCj4gdG8gZ3Vlc3RzIGJhc2VkIG9uIGJvb3RfY3B1 X2hhcyhJQlBCKSwgbm90IGJhc2VkIG9uIHRoZSAqZ3Vlc3QqCj4gY2FwYWJpbGl0aWVzLiBMb29r aW5nIGJhY2sgYXQgUGFvbG8ncyBwYXRjaCBzZXQgZnJvbSBKYW51YXJ5IDl0aCwgaXQKPiB3YXMg ZG9uZSBkaWZmZXJlbnRseSB0aGVyZSBidXQgSSB0aGluayBpdCBoYWQgdGhlIHNhbWUgYmVoYXZp b3VyPwo+IAo+IFRoZSByZXN0IG9mIFBhb2xvJ3MgcGF0Y2ggc2V0IEkgdGhpbmsgaGFzIGJlZW4g Y292ZXJlZCwgZXhjZXB0IDYvODoKPiAgwqBsa21sLmtlcm5lbC5vcmcvci8yMDE4MDEwOTEyMDMx MS4yNzU2NS03LXBib256aW5pQHJlZGhhdC5jb20KPiAKPiBUaGF0IGV4cG9zZXMgU1BFQ19DVFJM IGZvciBTVk0gdG9vIChzaW5jZSBBTUQgbm93IGFwcGFyZW50bHkgaGFzIGl0KS4KPiBJZiBhZGRp bmcgdGhhdCBlbmRzIHVwIHdpdGggZHVwbGljYXRlIE1TUiBoYW5kbGluZyBmb3IgZ2V0L3NldCwg cGVyaGFwcwo+IHRoYXQgd2FudHMgc2hpZnRpbmcgdXAgaW50byBrdm1fW3NnXWV0X21zcl9jb21t b24oKT8gQWx0aG91Z2ggSSBkb24ndAo+IHNlZSBvZmZoYW5kIHdoZXJlIHlvdSdkIHB1dCB0aGUg LT5zcGVjX2N0cmwgZmllbGQgaW4gdGhhdCBjYXNlLiBJdAo+IGRvZXNuJ3Qgd2FudCB0byBsaXZl IGluIHRoZSBnZW5lcmljIChldmVuIHRvIG5vbi14ODYpIHN0cnVjdCBrdm1fdmNwdS4KPiBTbyBt YXliZSBhIGxpdHRsZSBiaXQgb2YgZHVwbGljYXRpb24gaXMgdGhlIGJlc3QgYW5zd2VyLgo+IAo+ IE90aGVyIHRoYW4gdGhvc2UgZGV0YWlscywgSSB0aGluayB3ZSdyZSBtb3N0bHkgZ2V0dGluZyBj bG9zZS4gRG8gd2UKPiB3YW50IHRvIGFkZCBTVElCUCBvbiB0b3A/IFRoZXJlIGlzIHNvbWUgY29t cGxleGl0eSB0aGVyZSB3aGljaCBtZWFudCBJCj4gd2FzIGhhcHBpZXIgZ2V0dGluZyB0aGVzZSBm aXJzdCBiaXRzIHJlYWR5IGZpcnN0LCBiZWZvcmUgcGlsaW5nIHRoYXQgb24KPiB0b28uCj4gCj4g SSBiZWxpZXZlIEFzaG9rIHNlbnQgeW91IGEgY2hhbmdlIHdoaWNoIG1hZGUgdXMgZG8gSUJQQiBv biAqZXZlcnkqCj4gdm1leGl0OyBJIGRvbid0IHRoaW5rIHdlIG5lZWQgdGhhdC4gSXQncyBjdXJy ZW50bHkgZG9uZSBpbiB2Y3B1X2xvYWQoKQo+IHdoaWNoIG1lYW5zIHdlJ2xsIGRlZmluaXRlbHkg aGF2ZSBkb25lIGl0IGJldHdlZW4gcnVubmluZyBvbmUgdkNQVSBhbmQKPiB0aGUgbmV4dCwgYW5k IHdoZW4gdkNQVXMgYXJlIHBpbm5lZCB3ZSBiYXNpY2FsbHkgbmV2ZXIgbmVlZCB0byBkbyBpdC4K PiAKPiBXZSBrbm93IHRoYXQgVk1NIChlLmcuIHFlbXUpIHVzZXJzcGFjZSBjb3VsZCBiZSB2dWxu ZXJhYmxlIHRvIGF0dGFja3MKPiBmcm9tIGd1ZXN0IHJpbmcgMywgYmVjYXVzZSB0aGVyZSBpcyBu byBmbHVzaCBiZXR3ZWVuIHRoZSB2bWV4aXQgYW5kIHRoZQo+IGhvc3Qga2VybmVsICJyZXR1cm5p bmciIHRvIHRoZSB1c2Vyc3BhY2UgdGhyZWFkLiBEb2luZyBhIGZ1bGwgSUJQQiBvbgo+ICpldmVy eSogdm1leGl0IHdvdWxkIHByb3RlY3QgZnJvbSB0aGF0LCBidXQgaXQncyBvdmVya2lsbC4gSWYg dGhhdCdzCj4gdGhlIHJlYXNvbiwgbGV0J3MgY29tZSB1cCB3aXRoIHNvbWV0aGluZyBiZXR0ZXIu Cj4gCkFtYXpvbiBEZXZlbG9wbWVudCBDZW50ZXIgR2VybWFueSBHbWJICkJlcmxpbiAtIERyZXNk ZW4gLSBBYWNoZW4KbWFpbiBvZmZpY2U6IEtyYXVzZW5zdHIuIDM4LCAxMDExNyBCZXJsaW4KR2Vz Y2hhZWZ0c2Z1ZWhyZXI6IERyLiBSYWxmIEhlcmJyaWNoLCBDaHJpc3RpYW4gU2NobGFlZ2VyClVz dC1JRDogREUyODkyMzc4NzkKRWluZ2V0cmFnZW4gYW0gQW10c2dlcmljaHQgQ2hhcmxvdHRlbmJ1 cmcgSFJCIDE0OTE3MyBCCg==