From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH v3 5/9] x86/vmx: Improvements to LBR MSR handling Date: Wed, 27 Jun 2018 10:50:41 +0100 Message-ID: <5166a3b7-fc47-cbc7-a850-d0b1dc186175@citrix.com> References: <1528483723-4128-6-git-send-email-andrew.cooper3@citrix.com> <1530089004-32155-1-git-send-email-andrew.cooper3@citrix.com> <5B3354F002000078001CE3D9@prv1-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <5B3354F002000078001CE3D9@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: Kevin Tian , Xen-devel , Wei Liu , Jun Nakajima , Roger Pau Monne List-Id: xen-devel@lists.xenproject.org T24gMjcvMDYvMTggMTA6MTIsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDI3LjA2LjE4IGF0 IDEwOjQzLCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+IFRoZSBtYWluIHB1 cnBvc2Ugb2YgdGhpcyBwYXRjaCBpcyB0byBvbmx5IGV2ZXIgaW5zZXJ0IHRoZSBMQlIgTVNScyBp bnRvIHRoZQo+PiBndWVzdCBsb2FkL3NhdmUgbGlzdCBvbmNlLCBhcyBhIGZ1dHVyZSBwYXRjaCB3 YW50cyB0byBjaGFuZ2UgdGhlIGJlaGF2aW91ciBvZgo+PiB2bXhfYWRkX2d1ZXN0X21zcigpLgo+ Pgo+PiBUaGUgcmVwZWF0ZWQgcHJvY2Vzc2luZyBvZiBsYnJfaW5mbyBhbmQgdGhlIGd1ZXN0cyBN U1IgbG9hZC9zYXZlIGxpc3QgaXMKPj4gcmVkdW5kYW50LCBhbmQgYSBndWVzdCB1c2luZyBMQlIg aXRzZWxmIHdpbGwgaGF2ZSB0byByZS1lbmFibGUKPj4gTVNSX0RFQlVHQ1RMLkxCUiBpbiBpdHMg I0RCIGhhbmRsZXIsIG1lYW5pbmcgdGhhdCBYZW4gd2lsbCByZXBlYXQgdGhpcwo+PiByZWR1bmRh bnQgcHJvY2Vzc2luZyBldmVyeSB0aW1lIHRoZSBndWVzdCBnZXRzIGEgZGVidWcgZXhjZXB0aW9u Lgo+Pgo+PiBSZW5hbWUgbGJyX2ZpeHVwX2VuYWJsZWQgdG8gbGJyX2ZsYWdzIHRvIGJlIGEgbGl0 dGxlIG1vcmUgZ2VuZXJpYywgYW5kIHVzZSBvbmUKPj4gYml0IHRvIGluZGljYXRlIHRoYXQgdGhl IE1TUnMgaGF2ZSBiZWVuIGluc2VydGVkIGludG8gdGhlIGxvYWQvc2F2ZSBsaXN0Lgo+PiBTaG9y dGVuIHRoZSBleGlzdGluZyBGSVhVUCogaWRlbnRpZmllcnMgdG8gcmVkdWNlIGNvZGUgdm9sdW1l Lgo+Pgo+PiBGdXJ0aGVybW9yZSwgaGFuZGluZyB0aGUgZ3Vlc3QgI01DIG9uIGFuIGVycm9yIGlz bid0IGEgbGVnaXRpbWF0ZSBhY3Rpb24uICBUd28KPj4gb2YgdGhlIHRocmVlIGZhaWx1cmUgY2Fz ZXMgYXJlIGRlZmluaXRlbHkgaHlwZXJ2aXNvciBidWdzLCBhbmQgdGhlIHRoaXJkIGlzIGEKPj4g Ym91bmRhcnkgY2FzZSB3aGljaCBzaG91bGRuJ3Qgb2NjdXIgaW4gcHJhY3RpY2UuICBUaGUgZ3Vl c3QgYWxzbyB3b24ndCBleGVjdXRlCj4+IGNvcnJlY3RseSwgc28gaGFuZGxlIGVycm9ycyBieSBj bGVhbmx5IGNyYXNoaW5nIHRoZSBndWVzdC4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQW5kcmV3IENv b3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KPiBSZXZpZXdlZC1ieTogSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPgo+IHdpdGggb25lIG1pbm9yIHJlbWFyazoKPgo+PiBAQCAt MzA5NywzMCArMzA5OCw2NCBAQCBzdGF0aWMgaW50IHZteF9tc3Jfd3JpdGVfaW50ZXJjZXB0KHVu c2lnbmVkIGludCBtc3IsIHVpbnQ2NF90IG1zcl9jb250ZW50KQo+PiAgICAgICAgICAgICAgaWYg KCB2cG11X2RvX3dybXNyKG1zciwgbXNyX2NvbnRlbnQsIHN1cHBvcnRlZCkgKQo+PiAgICAgICAg ICAgICAgICAgIGJyZWFrOwo+PiAgICAgICAgICB9Cj4+IC0gICAgICAgIGlmICggbXNyX2NvbnRl bnQgJiBJQTMyX0RFQlVHQ1RMTVNSX0xCUiApCj4+ICsKPj4gKyAgICAgICAgLyoKPj4gKyAgICAg ICAgICogV2hlbiBhIGd1ZXN0IGZpcnN0IGVuYWJsZXMgTEJSLCBhcnJhbmdlIHRvIHNhdmUgYW5k IHJlc3RvcmUgdGhlIExCUgo+PiArICAgICAgICAgKiBNU1JzIGFuZCBhbGxvdyB0aGUgZ3Vlc3Qg ZGlyZWN0IGFjY2Vzcy4KPj4gKyAgICAgICAgICoKPj4gKyAgICAgICAgICogTVNSX0RFQlVHQ1RM IGFuZCBMQlIgaGFzIGV4aXN0ZWQgYWxtb3N0IGxvbmcgYXMgTVNScyBoYXZlIGV4aXN0ZWQsCj4g Li4uIGFzIGxvbmcgYXMgLi4uCgpOb3QgcXVpdGUuwqAgTVNScyBoYXZlIGV4aXN0ZWQgc2luY2Ug dGhlIFA1LCB3aGVyZWFzIExCUiB3YXMgaW50cm9kdWNlZAppbiB0aGUgUDYuwqAgVGhlIE1TUiB3 YXNuJ3QgYXJjaGl0ZWN0dXJhbCBhdCB0aGUgdGltZSwgaGVuY2Ugbm8gQ1BVSUQKYml0LCBidXQg dGhlIG5ld2VyIGFyY2hpdGVjdHVyYWwgZGVjbGFyYXRpb24gaXMgY29tcGF0aWJsZSB3aXRoIHRo ZSBQNgooYXMgZmFyIGFzIExCUiBpcyBjb25jZXJuZWQpLgoKfkFuZHJldwoKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlz dApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0 Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==