From mboxrd@z Thu Jan 1 00:00:00 1970 From: Razvan Cojocaru Subject: Re: [PATCH v1] x86/hvm: Generic instruction re-execution mechanism for execute faults Date: Tue, 27 Nov 2018 12:49:09 +0200 Message-ID: References: <20181116170412.xrwuun3cqxll22l3@mac> <20181122100554.pyqqa5iw6g27erkv@mac> <7efdfb5e-044b-f2a3-6562-d3468997096a@bitdefender.com> <20181122105821.6ihjcq5dy2lqjj6j@mac> <98f57a8a-288d-45ec-ef01-889fce63eeff@bitdefender.com> <20181122144924.ffy6xxwqugoj24nj@mac> <20181122153756.au3ntxgfqjjhd6sb@mac> <20181122170801.pzdoif2g73aamnmu@mac> <838191050200006B34861ACF@prv1-mh.provo.novell.com> <5BF7C36F02000078001FF3E1@prv1-mh.provo.novell.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 1gRavj-0000sI-4q for xen-devel@lists.xenproject.org; Tue, 27 Nov 2018 10:49:23 +0000 In-Reply-To: <5BF7C36F02000078001FF3E1@prv1-mh.provo.novell.com> Content-Language: en-US-large List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich Cc: Andrei LUTAS , Tamas K Lengyel , Wei Liu , George Dunlap , Andrew Cooper , Mihai Dontu , Kevin Tian , Jun Nakajima , aisaila@bitdefender.com, xen-devel , Anshul Makkar , Roger Pau Monne List-Id: xen-devel@lists.xenproject.org T24gMTEvMjMvMTggMTE6MDcgQU0sIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDIyLjExLjE4 IGF0IDE5OjI0LCA8cmNvam9jYXJ1QGJpdGRlZmVuZGVyLmNvbT4gd3JvdGU6Cj4+IF9Ib3dldmVy XywgcGxlYXNlIHBpY3R1cmUgYW4gaW5zdHJ1Y3Rpb24gdGhhdCBib3RoIHdyaXRlcyBpbnRvIGEg cGFnZSBQMQo+PiB3ZSdyZSBpbnRlcmVzdGVkIGluLCBfYW5kXyBjYXVzZXMgYSB3cml0ZSBpbnRv IGEgcmVhZC1vbmx5IHBhZ2Utd2Fsawo+PiByZWxhdGVkIHBhZ2UgUDIuIEVtdWxhdGluZyB0aGUg Y3VycmVudCBpbnN0cnVjdGlvbiwgYXMgdGhlIHVwc3RyZWFtCj4+IHBhdGNoIGRvZXMsIGRvZXMg ZWxpbWluYXRlIHRoZSB2bV9ldmVudCBjYXVzZWQgYnkgd3JpdGluZyBpbnRvIFAyLCBidXQKPj4g d2l0aCB0aGUgdW5mb3J0dW5hdGUgc2lkZS1lZmZlY3Qgb2YgbG9zaW5nIGEgcG90ZW50aWFsbHkg Y3JpdGljYWwgZXZlbnQKPj4gZm9yIHRoZSB3cml0ZSBpbnRvIFAxLgo+Pgo+PiBXaGF0IHRoaXMg cGF0Y2ggYXR0ZW1wdHMgdG8gZG8gaXMgdG8gbWFyayBQMSByd3ggKHNvIGFsbG93IHRoZSB3cml0 ZSksCj4+IHRoZW4gcHV0IHRoZSBmYXVsdGluZyBWQ1BVIGludG8gc2luZ2xlc3RlcCBtb2RlLCB0 aGVuIHJlc3RvcmUgdGhlCj4+IHJlc3RyaWN0aW9ucyBhZnRlciBpdCBoYXMgZmluaXNoZWQgc2lu Z2xlIHN0ZXBwaW5nLiBCeSBub3cgaXQncyBvYnZpb3VzCj4+IHdoeSBhbGwgdGhlIG90aGVyIFZD UFVzIG5lZWQgdG8gYmUgcGF1c2VkOiBvbmUgb2YgdGhlbSBtaWdodCBkbyBhCj4+IG1hbGljaW91 cyB3cml0ZSBpbnRvIFAxIHRoYXQgc2lsZW50bHkgc3VjY2VlZHMgKHNpbmNlIHRoZSBFUFQgaXMg c2hhcmVkCj4+IGFtb25nIGFsbCBWQ1BVcyAtIHB1dHRpbmcgYWx0cDJtIGFzaWRlIGZvciBhIG1v bWVudCkuIFdlIGRvbid0IHdhbnQgdGhhdC4KPiAKPiBJIHRoaW5rIHRoaXMgYWxsIGdvZXMgaW50 byB0aGUgZnVuZGFtZW50YWxseSB3cm9uZyBkaXJlY3Rpb24uIElmIGxvc3QKPiBldmVudHMgZHVy aW5nIGVtdWxhdGlvbiBhcmUgeW91ciBpc3N1ZSwgdGhlbiBsZXQncyBtYWtlIHN1cmUKPiBlbXVs YXRpb24gcGF0aHMgdHJpZ2dlciB0aGUgc2FtZSBldmVudHMgaGFyZHdhcmUgd291bGQuCgpJdCdz IGNvbXBsaWNhdGVkOiB3ZSB2ZXJ5IG11Y2ggbGlrZSB0aGF0IHRoZSBlbXVsYXRvciBpcyBpZ25v cmluZyBwYWdlCnJlc3RyaWN0aW9ucyAtIHRoaXMgYWxsb3dzIHVzIHRvIHByb2NlZWQgd2l0aCBp bnN0cnVjdGlvbnMgd3JpdGluZyBpbnRvCnByb3RlY3RlZCBwYWdlcyB3aXRob3V0IGxpZnRpbmcg c2FpZCByZXN0cmljdGlvbnMgKHdoZW4gdGhvc2UKaW5zdHJ1Y3Rpb25zIGFyZSBkZWVtZWQgdG8g YmUgc2FmZSBieSB0aGUgaW50cm9zcGVjdGlvbiBlbmdpbmUpLiBUaGF0IGlzCnRoZSBtb3N0IGVm ZmljaWVudCBtZWNoYW5pc20gd2UgaGF2ZSwgc2luY2Ugd2UgY2FuIGp1c3QgcmVwbHkgImVtdWxh dGUiCnRvIGEgdm1fZXZlbnQgYW5kIHRoYXQncyBpdC4KClRoZSBhbHRlcm5hdGl2ZSBpcyB0byB1 c2UgYWx0cDJtLCBoYXZlIGFuIHVucmVzdHJpY3RlZCB2aWV3ICh2aWV3IDAgZml0cwp0aGUgYmls bCBuaWNlbHkgc2luY2UgcmVzdHJpY3Rpb25zIG9uIGluIHByb3BhZ2F0ZSB0byBhbGwgb3RoZXIg YWN0aXZlCmFsdHAybXMpLCBnZXQgYW4gRVBUIGZhdWx0IHZtX2V2ZW50LCByZXBseSB3aXRoICJz d2l0Y2ggdG8gdmlldyAwIGFuZApwdXQgVkNQVSBpbiBzaW5nbGUtc3RlcCBtb2RlIiwgdGhlbiB3 YWl0IGZvciB0aGUgc2luZ2xlIHN0ZXAgZXZlbnQsIGFuZAp0aGVuIHJlcGx5ICJzd2l0Y2ggYmFj ayB0byByZXN0cmljdGVkIGFsdHAybSB2aWV3IGFuZCBnZXQgdGhlIFZDUFUgb3V0Cm9mIHNpbmds ZS1zdGVwIG1vZGUiLiBDbGVhcmx5IHRoZSBhbHRwMm0gb3B0aW9uIGlzIGF0IGxlYXN0IHR3aWNl IGFzCnNsb3csIHNvIHdlIHByZWZlciB0byBlbXVsYXRlIHRoZSBpbnN0cnVjdGlvbiB3aXRoIGEg c2luZ2xlIHZtX2V2ZW50CnJlcGx5IGFuZCBtb3ZlIG9uLgoKQSBzcGVjaWFsIGNhc2UgaXMgd2hl biB0aGUgZW11bGF0b3IgZG9lc24ndCBzdXBwb3J0IGFuIGluc3RydWN0aW9uLCBpbgp3aGljaCBj YXNlIHdlIGNhbiBnZXQgYW4gVU5JTVBMRU1FTlRFRCB2bV9ldmVudCwgYW5kIHN3aXRjaCB0byBh bHRwMm0KanVzdCBmb3IgdGhhdC4gQmV0d2VlbiB0aGVzZSwgZXZlcnl0aGluZyBzaG91bGQgYmUg Y292ZXJlZCBhbmQgdGhlCmd1ZXN0cyBzaG91bGQgcnVuIHdpdGhvdXQgcHJvYmxlbXMuCgpIb3dl dmVyLCB3ZSBuZWVkIHRvIGdldCBhbHRwMm0gdXAgdG8gc3BlZWQsIGZ1bGx5IHdvcmtpbmcgYW5k IHJlbGlhYmxlCnRvIGJlIGFibGUgdG8gZG8gYWxsIHRoYXQuCgpBYm91dCB0aGUgZW11bGF0b3Ig YW5kIGV2ZW50czogaWYgd2UgY291bGQgaGF2ZSBhIHRvZ2dsZSBmb3IgdGhlCmVtdWxhdG9yIHRv IHRlbGwgaXQgImVtdWxhdGUgdGhlIGN1cnJlbnQgaW5zdHJ1Y3Rpb24gYW5kIHNlbmQgb3V0IGEK dm1fZXZlbnQgb25seSBpZiBpdCB0b3VjaGVzIGEgcHJvdGVjdGVkIHBhZ2UgdGhhdCdzIE5PVCBw YXJ0IG9mIHRoZSBwYWdlCndhbGsiLCB0aGF0IHdvdWxkIGFsc28gd29yayAtIHRob3VnaCBJIGNh bid0IGF0IHRoaXMgcG9pbnQgdGVsbCBob3cKZmVhc2libGUgdGhvc2UgbW9kaWZpY2F0aW9ucyBh cmUuCgo+IFdpdGggYSBzdWZmaWNpZW50bHkgY29tcGxldGUgaW5zbiBlbXVsYXRvciwgc2luZ2xl LXN0ZXBwaW5nIHNob3VsZAo+IG5vdCBiZSBuZWVkZWQgYXQgYWxsIGltby4gR3JhbnRlZCB3ZSdy ZSBub3QgcXVpdGUgdGhlcmUgeWV0IHdpdGgKPiB0aGUgZW11bGF0b3IsIGJ1dCB3ZSd2ZSBtYWRl IHF1aXRlIGEgYml0IG9mIHByb2dyZXNzLiBBcyBiZWZvcmUsCj4gaWYgdGhlcmUgYXJlIHBhcnRp Y3VsYXIgaW5zdHJ1Y3Rpb25zIHlvdSBrbm93IG9mIHRoYXQgdGhlIGVtdWxhdG9yCj4gZG9lc24n dCBoYW5kbGUgeWV0LCBwbGVhc2Uga2VlcCBwb2ludGluZyB0aGVzZSBvdXQuIExhc3QgSSBrbm93 Cj4gd2VyZSBzb21lIEFWWCBtb3ZlIGluc3RydWN0aW9ucywgd2hpY2ggaGF2ZSBsb25nIGJlZW4K PiBpbXBsZW1lbnRlZC4KClRydWUsIEkgaGF2ZW4ndCBzZWVuIGVtdWxhdG9yIGlzc3VlcyBpbiB0 aGF0IHJlc3BlY3Qgd2l0aCBzdGFnaW5nIC0gdGhlCmVtdWxhdG9yIGFwcGVhcnMgbGF0ZWx5IHRv IGJlIHN1ZmZpY2llbnRseSBjb21wbGV0ZS4gVGhhbmsgeW91IHZlcnkgbXVjaApmb3IgeW91ciBo ZWxwIGFuZCBzdXBwb3J0IC0gd2UnbGwgZGVmaW5pdGVseSBwb2ludCBvdXQgdW5zdXBwb3J0ZWQK aW5zdHJ1Y3Rpb25zIGlmIHdlIHNwb3Qgc29tZSBhZ2Fpbi4KClRoZSBiaWdnZXIgcHJhY3RpY2Fs IHByb2JsZW0gaXMgaGF2aW5nIHNvbWV0aGluZyB0aGF0IHdvcmtzIHdpdGggb2xkZXIKWGVuIHZl cnNpb25zIC0gZm9yIGV4YW1wbGUgY3VycmVudCBYZW5TZXJ2ZXIgcmVsZWFzZXMgYXJlIHN0aWxs IG9uIFhlbgo0LjcsIGFuZCBiYWNrcG9ydGluZyB0aGUgd2hvbGUgZW11bGF0b3IgbWFjaGluZXJ5 IHRoZXJlIGlzIG5vdApyZWFzb25hYmxlLCB3aXRoIHRoZSBsYXJnZSBudW1iZXIgb2YgY2hhbmdl cyB0aGF0IGhhdmUgb2NjdXJlZCBpbiB0aGUKbWVhbnRpbWUuCgoKVGhhbmtzLApSYXp2YW4KCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBt YWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMu eGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=