From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: Ping: [PATCH v2] x86: don't allow clearing of TF_kernel_mode for other than 64-bit PV Date: Fri, 5 Apr 2019 14:03:40 +0100 Message-ID: <8ce0e9d1-40fc-8068-9aab-33a7708b5c80@citrix.com> References: <5C868ED8020000780021D5BB@prv1-mh.provo.novell.com> <0ce9d1f8-ca58-3f81-4975-7a70f5ab669f@citrix.com> <5CA70DE60200007800224CA3@prv1-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hCOWw-0008Qk-Py for xen-devel@lists.xenproject.org; Fri, 05 Apr 2019 13:05:14 +0000 In-Reply-To: <5CA70DE60200007800224CA3@prv1-mh.provo.novell.com> Content-Language: en-GB List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich Cc: xen-devel , Tim Deegan List-Id: xen-devel@lists.xenproject.org T24gMDUvMDQvMjAxOSAwOToxMiwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4gT24gMTkuMDMuMTkg YXQgMTg6MDEsIDxnZW9yZ2UuZHVubGFwQGNpdHJpeC5jb20+IHdyb3RlOgo+PiBPbiAzLzExLzE5 IDQ6MzcgUE0sIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4gVGhlIGZsYWcgaXMgcmVhbGx5IG9ubHkg bWVhbnQgZm9yIHRob3NlLCBib3RoIEhWTSBhbmQgMzItYml0IFBWIHRlbGwKPj4+IGtlcm5lbCBm cm9tIHVzZXIgbW9kZSBiYXNlZCBvbiBDUEwvUlBMLiBSZW1vdmUgdGhlIGFsbC1xdWVzdGlvbi1t YXJrcwo+Pj4gY29tbWVudCBhbmQgbGV0J3MgYmUgb24gdGhlIHNhZmUgc2lkZSBoZXJlIGFuZCBh bHNvIHN1cHByZXNzIGNsZWFyaW5nCj4+PiBmb3IgMzItYml0IFBWICh0aGlzIGlzbid0IGEgZmFz dCBwYXRoIGFmdGVyIGFsbCkuCj4+Pgo+Pj4gUmVtb3ZlIG5vIGxvbmdlciBuZWNlc3NhcnkgaXNf cHZfMzJiaXRfKigpIGZyb20gc2hfdXBkYXRlX2NyMygpIGFuZAo+Pj4gc2hfd2Fsa19ndWVzdF90 YWJsZXMoKS4gTm90ZSB0aGF0IHNoYWRvd19vbmVfYml0X2Rpc2FibGUoKSBhbHJlYWR5Cj4+PiBh c3N1bWVzIHRoZSBuZXcgYmVoYXZpb3IuCj4+Pgo+Pj4gU2lnbmVkLW9mZi1ieTogSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPgo+PiBBY2tlZC1ieTogR2VvcmdlIER1bmxhcCA8Z2Vvcmdl LmR1bmxhcEBjaXRyaXguY29tPgo+IFdoaWxlIEkgaW50ZW5kIHRvIHRha2UgR2VvcmdlJ3MgYWNr IGFzIGJlaW5nIHN1ZmZpY2llbnQgdG8gY292ZXIKPiB0aGUgc2hhZG93IHNpZGUsIG1heSBJIHBs ZWFzZSBhc2sgZm9yIGFuIGFjayBvciBvdGhlcndpc2UgZm9yCj4gdGhlIG5vbi1tbSBwYXJ0IG9m IHRoZSBjaGFuZ2U/IEkga25vdyB5b3UndmUgbm90IGJlZW4gaW4gZnVsbAo+IGFncmVlbWVudCB3 aXRoIHRoZSBjaGFuZ2UsIGJ1dCBpaXJjIEkndmUgbmV2ZXIgaGVhcmQgYmFjayBvbiBhCj4gc3Vi c2VxdWVudCByZXBseSBvZiBtaW5lLiBBbmQgSSBmdXJ0aGVyIHRoaW5rIHRoYXQgd2l0aCB0aGUg bm93Cj4gKHYyKSBldmVuIG1vcmUgb2J2aW91cyBkZXBlbmRlbmN5IG9mIHRoZSBzaGFkb3cgY29k ZSBvbgo+IHRoaXMgYmVoYXZpb3IsIHRoZSBjaGFuZ2Ugc2hvdWxkIHJlYWxseSBiZSB0YWtlbiBh cyBpcy4KCkFsc28sIEkndmUganVzdCBtYW5hZ2VkIHRvIGludmFsaWRhdGUgbXkgb3duIG9iamVj dGlvbiB0byB0aGlzIGNoYW5nZSBvbgp0aGUgYmFzaXMgdGhhdCBpdCB3aWxsIGJyZWFrIG1pZ3Jh dGlvbi4KCkFja2VkLWJ5OiBBbmRyZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29t PgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRl dmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9s aXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA== 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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 3E38CC4360F for ; 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Fri, 05 Apr 2019 13:05:12 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.60,312,1549929600"; d="scan'208";a="88420208" To: Jan Beulich References: <5C868ED8020000780021D5BB@prv1-mh.provo.novell.com> <0ce9d1f8-ca58-3f81-4975-7a70f5ab669f@citrix.com> <5CA70DE60200007800224CA3@prv1-mh.provo.novell.com> From: Andrew Cooper Openpgp: preference=signencrypt Autocrypt: addr=andrew.cooper3@citrix.com; prefer-encrypt=mutual; keydata= mQINBFLhNn8BEADVhE+Hb8i0GV6mihnnr/uiQQdPF8kUoFzCOPXkf7jQ5sLYeJa0cQi6Penp VtiFYznTairnVsN5J+ujSTIb+OlMSJUWV4opS7WVNnxHbFTPYZVQ3erv7NKc2iVizCRZ2Kxn srM1oPXWRic8BIAdYOKOloF2300SL/bIpeD+x7h3w9B/qez7nOin5NzkxgFoaUeIal12pXSR Q354FKFoy6Vh96gc4VRqte3jw8mPuJQpfws+Pb+swvSf/i1q1+1I4jsRQQh2m6OTADHIqg2E ofTYAEh7R5HfPx0EXoEDMdRjOeKn8+vvkAwhviWXTHlG3R1QkbE5M/oywnZ83udJmi+lxjJ5 YhQ5IzomvJ16H0Bq+TLyVLO/VRksp1VR9HxCzItLNCS8PdpYYz5TC204ViycobYU65WMpzWe LFAGn8jSS25XIpqv0Y9k87dLbctKKA14Ifw2kq5OIVu2FuX+3i446JOa2vpCI9GcjCzi3oHV e00bzYiHMIl0FICrNJU0Kjho8pdo0m2uxkn6SYEpogAy9pnatUlO+erL4LqFUO7GXSdBRbw5 gNt25XTLdSFuZtMxkY3tq8MFss5QnjhehCVPEpE6y9ZjI4XB8ad1G4oBHVGK5LMsvg22PfMJ ISWFSHoF/B5+lHkCKWkFxZ0gZn33ju5n6/FOdEx4B8cMJt+cWwARAQABtClBbmRyZXcgQ29v cGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPokCOgQTAQgAJAIbAwULCQgHAwUVCgkI CwUWAgMBAAIeAQIXgAUCWKD95wIZAQAKCRBlw/kGpdefoHbdD/9AIoR3k6fKl+RFiFpyAhvO 59ttDFI7nIAnlYngev2XUR3acFElJATHSDO0ju+hqWqAb8kVijXLops0gOfqt3VPZq9cuHlh IMDquatGLzAadfFx2eQYIYT+FYuMoPZy/aTUazmJIDVxP7L383grjIkn+7tAv+qeDfE+txL4 SAm1UHNvmdfgL2/lcmL3xRh7sub3nJilM93RWX1Pe5LBSDXO45uzCGEdst6uSlzYR/MEr+5Z JQQ32JV64zwvf/aKaagSQSQMYNX9JFgfZ3TKWC1KJQbX5ssoX/5hNLqxMcZV3TN7kU8I3kjK mPec9+1nECOjjJSO/h4P0sBZyIUGfguwzhEeGf4sMCuSEM4xjCnwiBwftR17sr0spYcOpqET ZGcAmyYcNjy6CYadNCnfR40vhhWuCfNCBzWnUW0lFoo12wb0YnzoOLjvfD6OL3JjIUJNOmJy RCsJ5IA/Iz33RhSVRmROu+TztwuThClw63g7+hoyewv7BemKyuU6FTVhjjW+XUWmS/FzknSi dAG+insr0746cTPpSkGl3KAXeWDGJzve7/SBBfyznWCMGaf8E2P1oOdIZRxHgWj0zNr1+ooF /PzgLPiCI4OMUttTlEKChgbUTQ+5o0P080JojqfXwbPAyumbaYcQNiH1/xYbJdOFSiBv9rpt TQTBLzDKXok86LkCDQRS4TZ/ARAAkgqudHsp+hd82UVkvgnlqZjzz2vyrYfz7bkPtXaGb9H4 Rfo7mQsEQavEBdWWjbga6eMnDqtu+FC+qeTGYebToxEyp2lKDSoAsvt8w82tIlP/EbmRbDVn 7bhjBlfRcFjVYw8uVDPptT0TV47vpoCVkTwcyb6OltJrvg/QzV9f07DJswuda1JH3/qvYu0p vjPnYvCq4NsqY2XSdAJ02HrdYPFtNyPEntu1n1KK+gJrstjtw7KsZ4ygXYrsm/oCBiVW/OgU g/XIlGErkrxe4vQvJyVwg6YH653YTX5hLLUEL1NS4TCo47RP+wi6y+TnuAL36UtK/uFyEuPy wwrDVcC4cIFhYSfsO0BumEI65yu7a8aHbGfq2lW251UcoU48Z27ZUUZd2Dr6O/n8poQHbaTd 6bJJSjzGGHZVbRP9UQ3lkmkmc0+XCHmj5WhwNNYjgbbmML7y0fsJT5RgvefAIFfHBg7fTY/i kBEimoUsTEQz+N4hbKwo1hULfVxDJStE4sbPhjbsPCrlXf6W9CxSyQ0qmZ2bXsLQYRj2xqd1 bpA+1o1j2N4/au1R/uSiUFjewJdT/LX1EklKDcQwpk06Af/N7VZtSfEJeRV04unbsKVXWZAk uAJyDDKN99ziC0Wz5kcPyVD1HNf8bgaqGDzrv3TfYjwqayRFcMf7xJaL9xXedMcAEQEAAYkC HwQYAQgACQUCUuE2fwIbDAAKCRBlw/kGpdefoG4XEACD1Qf/er8EA7g23HMxYWd3FXHThrVQ HgiGdk5Yh632vjOm9L4sd/GCEACVQKjsu98e8o3ysitFlznEns5EAAXEbITrgKWXDDUWGYxd pnjj2u+GkVdsOAGk0kxczX6s+VRBhpbBI2PWnOsRJgU2n10PZ3mZD4Xu9kU2IXYmuW+e5KCA vTArRUdCrAtIa1k01sPipPPw6dfxx2e5asy21YOytzxuWFfJTGnVxZZSCyLUO83sh6OZhJkk b9rxL9wPmpN/t2IPaEKoAc0FTQZS36wAMOXkBh24PQ9gaLJvfPKpNzGD8XWR5HHF0NLIJhgg 4ZlEXQ2fVp3XrtocHqhu4UZR4koCijgB8sB7Tb0GCpwK+C4UePdFLfhKyRdSXuvY3AHJd4CP 4JzW0Bzq/WXY3XMOzUTYApGQpnUpdOmuQSfpV9MQO+/jo7r6yPbxT7CwRS5dcQPzUiuHLK9i nvjREdh84qycnx0/6dDroYhp0DFv4udxuAvt1h4wGwTPRQZerSm4xaYegEFusyhbZrI0U9tJ B8WrhBLXDiYlyJT6zOV2yZFuW47VrLsjYnHwn27hmxTC/7tvG3euCklmkn9Sl9IAKFu29RSo d5bD8kMSCYsTqtTfT6W4A3qHGvIDta3ptLYpIAOD2sY3GYq2nf3Bbzx81wZK14JdDDHUX2Rs 6+ahAA== Message-ID: <8ce0e9d1-40fc-8068-9aab-33a7708b5c80@citrix.com> Date: Fri, 5 Apr 2019 14:03:40 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <5CA70DE60200007800224CA3@prv1-mh.provo.novell.com> Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To AMSPEX02CL02.citrite.net (10.69.22.126) Subject: Re: [Xen-devel] Ping: [PATCH v2] x86: don't allow clearing of TF_kernel_mode for other than 64-bit PV X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-devel , Tim Deegan Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Message-ID: <20190405130340.Nwvvd6xCmK4lJuyoiYwIigrWDYFSsB9AA4k8X4oZwoo@z> T24gMDUvMDQvMjAxOSAwOToxMiwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4gT24gMTkuMDMuMTkg YXQgMTg6MDEsIDxnZW9yZ2UuZHVubGFwQGNpdHJpeC5jb20+IHdyb3RlOgo+PiBPbiAzLzExLzE5 IDQ6MzcgUE0sIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4gVGhlIGZsYWcgaXMgcmVhbGx5IG9ubHkg bWVhbnQgZm9yIHRob3NlLCBib3RoIEhWTSBhbmQgMzItYml0IFBWIHRlbGwKPj4+IGtlcm5lbCBm cm9tIHVzZXIgbW9kZSBiYXNlZCBvbiBDUEwvUlBMLiBSZW1vdmUgdGhlIGFsbC1xdWVzdGlvbi1t YXJrcwo+Pj4gY29tbWVudCBhbmQgbGV0J3MgYmUgb24gdGhlIHNhZmUgc2lkZSBoZXJlIGFuZCBh bHNvIHN1cHByZXNzIGNsZWFyaW5nCj4+PiBmb3IgMzItYml0IFBWICh0aGlzIGlzbid0IGEgZmFz dCBwYXRoIGFmdGVyIGFsbCkuCj4+Pgo+Pj4gUmVtb3ZlIG5vIGxvbmdlciBuZWNlc3NhcnkgaXNf cHZfMzJiaXRfKigpIGZyb20gc2hfdXBkYXRlX2NyMygpIGFuZAo+Pj4gc2hfd2Fsa19ndWVzdF90 YWJsZXMoKS4gTm90ZSB0aGF0IHNoYWRvd19vbmVfYml0X2Rpc2FibGUoKSBhbHJlYWR5Cj4+PiBh c3N1bWVzIHRoZSBuZXcgYmVoYXZpb3IuCj4+Pgo+Pj4gU2lnbmVkLW9mZi1ieTogSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPgo+PiBBY2tlZC1ieTogR2VvcmdlIER1bmxhcCA8Z2Vvcmdl LmR1bmxhcEBjaXRyaXguY29tPgo+IFdoaWxlIEkgaW50ZW5kIHRvIHRha2UgR2VvcmdlJ3MgYWNr IGFzIGJlaW5nIHN1ZmZpY2llbnQgdG8gY292ZXIKPiB0aGUgc2hhZG93IHNpZGUsIG1heSBJIHBs ZWFzZSBhc2sgZm9yIGFuIGFjayBvciBvdGhlcndpc2UgZm9yCj4gdGhlIG5vbi1tbSBwYXJ0IG9m IHRoZSBjaGFuZ2U/IEkga25vdyB5b3UndmUgbm90IGJlZW4gaW4gZnVsbAo+IGFncmVlbWVudCB3 aXRoIHRoZSBjaGFuZ2UsIGJ1dCBpaXJjIEkndmUgbmV2ZXIgaGVhcmQgYmFjayBvbiBhCj4gc3Vi c2VxdWVudCByZXBseSBvZiBtaW5lLiBBbmQgSSBmdXJ0aGVyIHRoaW5rIHRoYXQgd2l0aCB0aGUg bm93Cj4gKHYyKSBldmVuIG1vcmUgb2J2aW91cyBkZXBlbmRlbmN5IG9mIHRoZSBzaGFkb3cgY29k ZSBvbgo+IHRoaXMgYmVoYXZpb3IsIHRoZSBjaGFuZ2Ugc2hvdWxkIHJlYWxseSBiZSB0YWtlbiBh cyBpcy4KCkFsc28sIEkndmUganVzdCBtYW5hZ2VkIHRvIGludmFsaWRhdGUgbXkgb3duIG9iamVj dGlvbiB0byB0aGlzIGNoYW5nZSBvbgp0aGUgYmFzaXMgdGhhdCBpdCB3aWxsIGJyZWFrIG1pZ3Jh dGlvbi4KCkFja2VkLWJ5OiBBbmRyZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29t PgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRl dmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9s aXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==