From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH v4 1/4] x86: stop handling MSR_IA32_BNDCFGS save/restore in implementation code Date: Tue, 9 Apr 2019 15:38:35 +0100 Message-ID: References: <20190314135125.1958-1-paul.durrant@citrix.com> <20190314135125.1958-2-paul.durrant@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hDs0B-0005ki-Pf for xen-devel@lists.xenproject.org; Tue, 09 Apr 2019 14:45:31 +0000 In-Reply-To: <20190314135125.1958-2-paul.durrant@citrix.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: Paul Durrant , xen-devel@lists.xenproject.org Cc: Kevin Tian , Wei Liu , Jun Nakajima , Jan Beulich , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= List-Id: xen-devel@lists.xenproject.org T24gMTQvMDMvMjAxOSAxMzo1MSwgUGF1bCBEdXJyYW50IHdyb3RlOgo+IEBAIC0xMjE1LDggKzEx OTYsMTEgQEAgc3RhdGljIGJvb2wgdm14X3NldF9ndWVzdF9ibmRjZmdzKHN0cnVjdCB2Y3B1ICp2 LCB1NjQgdmFsKQo+ICAgICAgcmV0dXJuIHRydWU7Cj4gIH0KPiAgCj4gLXN0YXRpYyBib29sIHZt eF9nZXRfZ3Vlc3RfYm5kY2ZncyhzdHJ1Y3QgdmNwdSAqdiwgdTY0ICp2YWwpCj4gK3N0YXRpYyBi b29sIHZteF9nZXRfZ3Vlc3RfYm5kY2Zncyhjb25zdCBzdHJ1Y3QgdmNwdSAqY3YsIHU2NCAqdmFs KQo+ICB7Cj4gKyAgICAvKiBHZXQgYSBub24tY29uc3QgcG9pbnRlciBmb3Igdm14X3ZtY3NfZW50 ZXIoKSAqLwo+ICsgICAgc3RydWN0IHZjcHUgKnYgPSBjdi0+ZG9tYWluLT52Y3B1W2N2LT52Y3B1 X2lkXTsKPiArCgpJJ20gc29ycnkgbm90IGhhdmluZyBnb3QgYXJvdW5kIHRvIHJldmlld2luZyB0 aGlzIHNlcmllcyBpbiBhIHRpbWVseQpmYXNoaW9uLCBidXQgSSBhbSBnb2luZyB0byBzcGVjaWZp Y2FsbHkgbmFjayBkZS1jb25zdGluZyBnYW1lcyBsaWtlCnRoaXMuwqAgVGhlcmUgaXMgbm93IHZj cHUgc3RhdGUgY29ycnVwdGlvbiB3aGVuIHRoZSBNU1IgaXMgYWNjZXNzZWQKcmVtb3RlbHkgLSB0 aGlzIGhvb2sgKm11c3QqIHJlbWFpbiBhIG11dGFibGUgdmNwdSBwb2ludGVyLgoKVGhlcmUgYXJl IGFsc28gbXVsdGlwbGUgb3RoZXIgZnVuY3Rpb25hbCBpc3N1ZXMgYW5kIHJlZ3Jlc3Npb25zCmlu dHJvZHVjZWQgYnkgdGhpcyBzZXJpZXMuwqAgSSdtIHRyeWluZyB0byBwdXQgdG9nZXRoZXIgYSBw YXRjaCB0byBmaXgKYWxsIG9mIHRoZSBmYWxsb3V0LCBidXQgSSBhbHNvIG1pZ2h0IHJldmVydCB0 aGUgc2VyaWVzIHdob2xlc2FsZQpkZXBlbmRpbmcgb24gdGhlIGV2ZW50dWFsIGNvbXBsZXhpdHku Cgp+QW5kcmV3CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpo dHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs 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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 571D4C10F0E for ; 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Tue, 09 Apr 2019 14:45:29 +0000 (UTC) X-IronPort-AV: E=Sophos;i="5.60,329,1549929600"; d="scan'208";a="88573060" To: Paul Durrant , References: <20190314135125.1958-1-paul.durrant@citrix.com> <20190314135125.1958-2-paul.durrant@citrix.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: Date: Tue, 9 Apr 2019 15:38:35 +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: <20190314135125.1958-2-paul.durrant@citrix.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] [PATCH v4 1/4] x86: stop handling MSR_IA32_BNDCFGS save/restore in implementation code 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: Kevin Tian , Wei Liu , Jun Nakajima , Jan Beulich , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Message-ID: <20190409143835.Mmf1O127hRTlmFb7J1hD_5ebO1rfKNDGRurLMDbXLhY@z> T24gMTQvMDMvMjAxOSAxMzo1MSwgUGF1bCBEdXJyYW50IHdyb3RlOgo+IEBAIC0xMjE1LDggKzEx OTYsMTEgQEAgc3RhdGljIGJvb2wgdm14X3NldF9ndWVzdF9ibmRjZmdzKHN0cnVjdCB2Y3B1ICp2 LCB1NjQgdmFsKQo+ICAgICAgcmV0dXJuIHRydWU7Cj4gIH0KPiAgCj4gLXN0YXRpYyBib29sIHZt eF9nZXRfZ3Vlc3RfYm5kY2ZncyhzdHJ1Y3QgdmNwdSAqdiwgdTY0ICp2YWwpCj4gK3N0YXRpYyBi b29sIHZteF9nZXRfZ3Vlc3RfYm5kY2Zncyhjb25zdCBzdHJ1Y3QgdmNwdSAqY3YsIHU2NCAqdmFs KQo+ICB7Cj4gKyAgICAvKiBHZXQgYSBub24tY29uc3QgcG9pbnRlciBmb3Igdm14X3ZtY3NfZW50 ZXIoKSAqLwo+ICsgICAgc3RydWN0IHZjcHUgKnYgPSBjdi0+ZG9tYWluLT52Y3B1W2N2LT52Y3B1 X2lkXTsKPiArCgpJJ20gc29ycnkgbm90IGhhdmluZyBnb3QgYXJvdW5kIHRvIHJldmlld2luZyB0 aGlzIHNlcmllcyBpbiBhIHRpbWVseQpmYXNoaW9uLCBidXQgSSBhbSBnb2luZyB0byBzcGVjaWZp Y2FsbHkgbmFjayBkZS1jb25zdGluZyBnYW1lcyBsaWtlCnRoaXMuwqAgVGhlcmUgaXMgbm93IHZj cHUgc3RhdGUgY29ycnVwdGlvbiB3aGVuIHRoZSBNU1IgaXMgYWNjZXNzZWQKcmVtb3RlbHkgLSB0 aGlzIGhvb2sgKm11c3QqIHJlbWFpbiBhIG11dGFibGUgdmNwdSBwb2ludGVyLgoKVGhlcmUgYXJl IGFsc28gbXVsdGlwbGUgb3RoZXIgZnVuY3Rpb25hbCBpc3N1ZXMgYW5kIHJlZ3Jlc3Npb25zCmlu dHJvZHVjZWQgYnkgdGhpcyBzZXJpZXMuwqAgSSdtIHRyeWluZyB0byBwdXQgdG9nZXRoZXIgYSBw YXRjaCB0byBmaXgKYWxsIG9mIHRoZSBmYWxsb3V0LCBidXQgSSBhbHNvIG1pZ2h0IHJldmVydCB0 aGUgc2VyaWVzIHdob2xlc2FsZQpkZXBlbmRpbmcgb24gdGhlIGV2ZW50dWFsIGNvbXBsZXhpdHku Cgp+QW5kcmV3CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpo dHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs