Received: by 2002:a25:ca44:0:0:0:0:0 with SMTP id a65csp1409245ybg; Wed, 29 Jul 2020 13:29:53 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzBEaaaW/LL6BiefMUfyHoGB+ZQG3h34H9efSNPqrFYqfCuE9Uo5wnKkhK72ScKlhxygU+G X-Received: by 2002:aa7:d90f:: with SMTP id a15mr105411edr.86.1596054593109; Wed, 29 Jul 2020 13:29:53 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1596054593; cv=none; d=google.com; s=arc-20160816; b=j0O27l1npd7SgM9j8mSNMqEUn6zXMY9Kq64rB40kzlHeu0V7J8jgi6+kaZjhWSUBpq VluskDMFJeFaljSPPl1EoiQVKZw7YC0jMRBKReM9rV43EVucVAwrEIaeyeysqMLgybUz TWVBBmuyRQSZLcxNMtPbqQYeVaXDipkQZqNiSOE3O9APZqmZFiakVlm5ZambN2dENFKO lLuS/7zy27KV/K6iiG4K3NsgM8ZTCCAoWVlk9rze7OnXfyVx2ngLyW9KerI1ZZi08D0T 5p2ViVmZP0w0mMe3xQGsIadCFkozSwZm1y5MSYvNSOZeq1rtHAqHHdbrZTFuIGzJyZn7 gRVw== 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=RJ4gUEPwSqRV2+z7YTBzeU1z9TUiwVmPEqQmGefYNdM=; b=K6TpOYAXnt1GzY0Avwtc8mOw02WPvPpzGOtLph8W/ngnN0k1v64kjlKlt541J9FYy/ INKiH8rhGBmCDtyOYLkieSs6Ms5bLZP7a2erKwgkE3StNPKiKDWTHQomOXr3GbJEdR57 KYbWDDB4YMZ02bMjWv5B9oTNeWEI+CVuLpanT85AP888SmueS5x0JfYis7BohqsldIv7 WbSvDtdg5c7PwYB3PXwFoYha9ueGKy/Uh9M+NnIn4hLapB+BuTe3+Zv5WXfjKEkAqac6 YEaEJCkmjYl7x+ILDIWRM22f5IyMBa/ZdrJFiZPBZswO76oBULtaSyrVkK5Ve3roetC5 IB0w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=FwRkNgSF; 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 oi19si1451183ejb.229.2020.07.29.13.29.30; Wed, 29 Jul 2020 13:29:53 -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=FwRkNgSF; 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 S1726890AbgG2U3J (ORCPT + 99 others); Wed, 29 Jul 2020 16:29:09 -0400 Received: from smtp-fw-6001.amazon.com ([52.95.48.154]:18648 "EHLO smtp-fw-6001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726476AbgG2U3I (ORCPT ); Wed, 29 Jul 2020 16:29:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1596054548; x=1627590548; h=to:cc:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding:subject; bh=RJ4gUEPwSqRV2+z7YTBzeU1z9TUiwVmPEqQmGefYNdM=; b=FwRkNgSFkzXqqIvhCsDHEYpY5F17ci66XE5Z8GVfi7GzIkUgrKvL69G0 cpdkskpvdY185ud3rzKxBDcltOvp2xVXSBfeeUpd9QU9EXaemT689rmjy SkpyLXLOF9/we+3+COzD9rHCPDREjNUKTGlkiztf3la2taMN9arSUYzd2 E=; IronPort-SDR: qxaJZbDS6tvN8jjtNyd4UTF/CI14Fwu2ejw6yzNlY+BJkt3mDPWeFMPwQmSaUwCH6fBIByf9dk vOnmRlwLzLcw== X-IronPort-AV: E=Sophos;i="5.75,411,1589241600"; d="scan'208";a="46343573" Subject: Re: [PATCH] KVM: x86: Deflect unknown MSR accesses to user space Received: from iad12-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-2b-a7fdc47a.us-west-2.amazon.com) ([10.43.8.6]) by smtp-border-fw-out-6001.iad6.amazon.com with ESMTP; 29 Jul 2020 20:29:06 +0000 Received: from EX13MTAUWC001.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2b-a7fdc47a.us-west-2.amazon.com (Postfix) with ESMTPS id 7C79AC05AA; Wed, 29 Jul 2020 20:29:04 +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 20:29:03 +0000 Received: from 38f9d3867b82.ant.amazon.com (10.43.160.48) by EX13D20UWC002.ant.amazon.com (10.43.162.163) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 29 Jul 2020 20:29:00 +0000 To: Jim Mattson CC: Aaron Lewis , Vitaly Kuznetsov , Paolo Bonzini , Jonathan Corbet , Sean Christopherson , Wanpeng Li , Joerg Roedel , kvm list , , LKML References: <20200728004446.932-1-graf@amazon.com> <87d04gm4ws.fsf@vitty.brq.redhat.com> <14035057-ea80-603b-0466-bb50767f9f7e@amazon.com> From: Alexander Graf Message-ID: <69d8c4cd-0d36-0135-d1fc-0af7d81ce062@amazon.com> Date: Wed, 29 Jul 2020 22:28:59 +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: [10.43.160.48] X-ClientProxiedBy: EX13D01UWA001.ant.amazon.com (10.43.160.60) 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 CgpPbiAyOS4wNy4yMCAyMDoyNywgSmltIE1hdHRzb24gd3JvdGU6Cj4gQ0FVVElPTjogVGhpcyBl bWFpbCBvcmlnaW5hdGVkIGZyb20gb3V0c2lkZSBvZiB0aGUgb3JnYW5pemF0aW9uLiBEbyBub3Qg Y2xpY2sgbGlua3Mgb3Igb3BlbiBhdHRhY2htZW50cyB1bmxlc3MgeW91IGNhbiBjb25maXJtIHRo ZSBzZW5kZXIgYW5kIGtub3cgdGhlIGNvbnRlbnQgaXMgc2FmZS4KPiAKPiAKPiAKPiBPbiBXZWQs IEp1bCAyOSwgMjAyMCBhdCAyOjA2IEFNIEFsZXhhbmRlciBHcmFmIDxncmFmQGFtYXpvbi5jb20+ IHdyb3RlOgo+Pgo+Pgo+Pgo+PiBPbiAyOC4wNy4yMCAxOToxMywgSmltIE1hdHRzb24gd3JvdGU6 Cj4gCj4+PiBUaGlzIHNvdW5kcyBzaW1pbGFyIHRvIFBldGVyIEhvcm55YWNrJ3MgUkZDIGZyb20g NSB5ZWFycyBhZ286Cj4+PiBodHRwczovL3d3dy5tYWlsLWFyY2hpdmUuY29tL2t2bUB2Z2VyLmtl cm5lbC5vcmcvbXNnMTI0NDQ4Lmh0bWwuCj4+Cj4+IFllYWgsIGxvb2tzIHZlcnkgc2ltaWxhci4g RG8geW91IGtub3cgdGhlIGhpc3Rvcnkgd2h5IGl0IG5ldmVyIGdvdAo+PiBtZXJnZWQ/IEkgY291 bGRuJ3Qgc3BvdCBhIG5vbi1SRkMgdmVyc2lvbiBvZiB0aGlzIG9uIHRoZSBNTC4KPiAKPiBJIGJl bGlldmUgUGV0ZXIgZ290IGZydXN0cmF0ZWQgd2l0aCBhbGwgb2YgdGhlIHB1c2hiYWNrIGhlIHdh cwo+IGdldHRpbmcsIGFuZCBoZSBtb3ZlZCBvbiB0byBvdGhlciB0aGluZ3MuIFdoaWxlIEdvb2ds ZSBzdGlsbCB1c2VzIHRoYXQKPiBjb2RlLCBBYXJvbidzIG5ldyBhcHByb2FjaCBzaG91bGQgZ2l2 ZSB1cyBlcXVpdmFsZW50IGZ1bmN0aW9uYWxpdHkKPiB3aXRob3V0IGhhdmluZyB0byBjb21tZW50 IG91dCB0aGUgTVNScyB0aGF0IGt2bSBwcmV2aW91c2x5IGRpZG4ndCBrbm93Cj4gYWJvdXQsIGFu ZCB3aGljaCB3ZSBzdGlsbCB3YW50IHJlZGlyZWN0ZWQgdG8gdXNlcnNwYWNlLgo+IAo+Pj4gSXQg c2VlbXMgdW5saWtlbHkgdGhhdCB1c2Vyc3BhY2UgaXMgZ29pbmcgdG8ga25vdyB3aGF0IHRvIGRv IHdpdGggYQo+Pj4gbGFyZ2UgbnVtYmVyIG9mIE1TUnMuIEkgc3VzcGVjdCB0aGF0IGEgc21hbGwg ZW51bWVyYXRlZCBsaXN0IHdpbGwKPj4+IHN1ZmZpY2UuIEluIGZhY3QsICtBYXJvbiBMZXdpcyBp cyB3b3JraW5nIG9uIHVwc3RyZWFtaW5nIGEgbG9jYWwKPj4+IEdvb2dsZSBwYXRjaCBzZXQgdGhh dCBkb2VzIGp1c3QgdGhhdC4KPj4KPj4gSSB0ZW5kIHRvIGRpc2FncmVlIG9uIHRoYXQgc2VudGlt ZW50LiBPbmUgb2YgdGhlIG1vdGl2YXRpb25zIGJlaGluZCB0aGlzCj4+IHBhdGNoIGlzIHRvIHBv cHVsYXRlIGludmFsaWQgTVNSIGFjY2Vzc2VzIGludG8gdXNlciBzcGFjZSwgdG8gbW92ZSBsb2dp Ywo+PiBsaWtlICJpZ25vcmVfbXNycyJbMV0gaW50byB1c2VyIHNwYWNlLiBUaGlzIGlzIG5vdCB2 ZXJ5IHVzZWZ1bCBmb3IgdGhlCj4+IGNsb3VkIHVzZSBjYXNlLCBidXQgaXQgZG9lcyBjb21lIGlu IGhhbmR5IHdoZW4geW91IHdhbnQgdG8gaGF2ZSBWTXMgdGhhdAo+PiBjYW4gaGFuZGxlIHVuaW1w bGVtZW50ZWQgTVNScyBpbiBwYXJhbGxlbCB0byBvbmVzIHRoYXQgZG8gbm90Lgo+Pgo+PiBTbyB3 aGF0ZXZlciB3ZSBpbXBsZW1lbnQsIEkgd291bGQgaWRlYWxseSB3YW50IGEgbWVjaGFuaXNtIGF0 IHRoZSBlbmQgb2YKPj4gdGhlIGRheSB0aGF0IGFsbG93cyBtZSB0byAidHJhcCB0aGUgcmVzdCIg aW50byB1c2VyIHNwYWNlLgo+IAo+IEkgZG8gdGhpbmsgInRoZSByZXN0IiBzaG91bGQgYmUgZXhw bGljaXRseSBzcGVjaWZpZWQsIHNvIHRoYXQKPiB1c2Vyc3BhY2UgZG9lc24ndCBnZXQgc3VycHJp c2VzIHdoZW4ga3ZtIGV2b2x2ZXMuIE1heWJlIHRoaXMgY2FuIGJlCj4gZG9uZSB1c2luZyB0aGUg YWxsb3ctbGlzdCB5b3UgcmVmZXIgdG8gbGF0ZXIsIGFsb25nIHdpdGggYSBzcGVjaWZpZWQKPiBh Y3Rpb24gZm9yIGRpc2FsbG93ZWQgTVNSczogKDEpIHJhaXNlICNHUCwgKDIpIGlnbm9yZSwgb3Ig KDMpIGV4aXQgdG8KPiB1c2Vyc3BhY2UuIFRoaXMgYWN0dWFsbHkgc2VlbXMgb3J0aG9nb25hbCB0 byB3aGF0IEFhcm9uIGlzIHdvcmtpbmcgb24sCj4gd2hpY2ggaXMgdG8gcmVxdWVzdCB0aGF0IHNw ZWNpZmljIE1TUiBhY2Nlc3NlcyBleGl0IHRvIHVzZXJzcGFjZS4gQnV0LAo+IGF0IGxlYXN0IHRo ZSBwbHVtYmluZyBmb3Ige1JELFdSfU1TUiBjb21wbGV0aW9uIHdoZW4gY29taW5nIGJhY2sgZnJv bQo+IHVzZXJzcGFjZSBjYW4gYmUgbGV2ZXJhZ2VkIGJ5IGJvdGguCgoKVGhpbmtpbmcgYWJvdXQg dGhpcyBmb3IgYSB3aGlsZSwgSSBhbSBxdWl0ZSBjb25maWRlbnQgdGhhdCB3ZSBkb24ndCBuZWVk IAp0byBjb21wbGV4aWZ5IHRoaXMgYWxsIHRoYXQgbXVjaC4gVGhlICNHUCBwYXRoIGlzIG5ldmVy IHBlcmZvcm1hbmNlIApjcml0aWNhbCBhbmQgdGh1cyBjYW4gZWFzaWx5IGJlIGhhbmRsZWQgaW4g dXNlciBzcGFjZS4gVGhlcmUgYXJlIGEgZmV3IApuaWNoZSBjYXNlcyB3aGVyZSBleGl0aW5nIHRv IHVzZXIgc3BhY2UgaXMgInRvbyBjb21wbGljYXRlZCIgKHRoaW5rIG5WTVggCk1TUiByZXN0b3Jl IHBhdGgpLiBCdXQgdGhleSBhcmUgbmljaGUgYW5kIGp1c3QgYmFpbGluZyBvdXQgZm9yIHRoZSB1 c2VyIApzcGFjZSBleGl0IHBhdGggb24gdGhlbSBpcyBmaW5lLgoKU28gSSB0aGluayBhIHBhdGNo IHRoYXQgYWxsb3dzIHVzIHRvIGFsbG93IGxpc3QgTVNScyB0aGF0IHNob3VsZCBiZSAKaGFuZGxl ZCBpbiBLVk0gYW5kIGFub3RoZXIgcGF0Y2ggdGhhdCBhbGxvd3MgdXMgdG8gZGVmbGVjdCBhbnkg TVNSIAppbmZsaWN0ZWQgI0dQcyBpbnRvIHVzZXIgc3BhY2UgaXMgYWxsIGl0IHRha2VzIHRvIG1h a2UgdGhpcyBhIGZsZXhpYmxlIAphbmQgc3RhYmxlIEFCSS4KClRoZSBncmVhdCB0aGluZyBpcyB0 aGF0IGJ5IHVudGFuZ2xpbmcgdGhlIHR3byBiaXRzLCB3ZSBjYW4gYWxzbyBzdXBwb3J0IAp0aGUg InVzZXIgc3BhY2Ugd2FudHMgdG8gbGVhdmUgaXQgYWxsIHRvIEtWTSwgYnV0IGJlIGFibGUgdG8g aW1wbGVtZW50IAppZ25vcmVfbXNycyBpdHNlbGYiIHVzZSBjYXNlIGVhc2lseS4gVXNlciBzcGFj ZSB3b3VsZCBqdXN0IG5vdCBzZXQgYW4gCmFsbG93IGxpc3QuCgpNZWFud2hpbGUsIEkgaGF2ZSBj bGVhbmVkIHVwIEthcmltJ3Mgb2xkIHBhdGNoIHRvIGFkZCBhbGxvdyBsaXN0aW5nIHRvIApLVk0g YW5kIHdvdWxkIHBvc3QgaXQgaWYgQWFyb24gZG9lc24ndCBiZWF0IG1lIHRvIGl0IDopLgoKCkFs ZXgKCgoKQW1hem9uIERldmVsb3BtZW50IENlbnRlciBHZXJtYW55IEdtYkgKS3JhdXNlbnN0ci4g MzgKMTAxMTcgQmVybGluCkdlc2NoYWVmdHNmdWVocnVuZzogQ2hyaXN0aWFuIFNjaGxhZWdlciwg Sm9uYXRoYW4gV2Vpc3MKRWluZ2V0cmFnZW4gYW0gQW10c2dlcmljaHQgQ2hhcmxvdHRlbmJ1cmcg dW50ZXIgSFJCIDE0OTE3MyBCClNpdHo6IEJlcmxpbgpVc3QtSUQ6IERFIDI4OSAyMzcgODc5CgoK