From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH 1/6] x86/vmx: Fix handing of MSR_DEBUGCTL on VMExit Date: Wed, 30 May 2018 01:32:30 -0600 Message-ID: <5B0E538E02000078001C6D78@prv1-mh.provo.novell.com> References: <1527517678-1779-1-git-send-email-andrew.cooper3@citrix.com> <1527517678-1779-2-git-send-email-andrew.cooper3@citrix.com> <5B0D2C6502000078001C685A@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: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Andrew Cooper Cc: Kevin Tian , Xen-devel , Wei Liu , Jun Nakajima , Roger Pau Monne List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDI5LjA1LjE4IGF0IDIwOjA4LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3Jv dGU6Cj4gT24gMjkvMDUvMTggMTE6MzMsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+PiBPbiAyOC4w NS4xOCBhdCAxNjoyNywgPGFuZHJldy5jb29wZXIzQGNpdHJpeC5jb20+IHdyb3RlOgo+Pj4gQ3Vy cmVudGx5LCB3aGVuZXZlciB0aGUgZ3Vlc3Qgd3JpdGVzIGEgbm9uemVybyB2YWx1ZSB0byBNU1Jf REVCVUdDVEwsIFhlbgo+Pj4gdXBkYXRlcyBhIGhvc3QgTVNSIGxvYWQgbGlzdCBlbnRyeSB3aXRo IHRoZSBjdXJyZW50IGhhcmR3YXJlIHZhbHVlIG9mCj4+PiBNU1JfREVCVUdDVEwuICBUaGlzIGlz IHdyb25nLgo+PiAiVGhpcyBpcyB3cm9uZyIgZ29lcyB0b28gZmFyIGZvciBteSB0YXN0ZTogSXQg aXMgbm90IHZlcnkgZWZmaWNpZW50IHRvIGRvIGl0IHRoYXQKPj4gd2F5LCBidXQgaXQncyBzdGls bCBjb3JyZWN0LiBVbmxlc3MsIG9mIGNvdXJzZSwgdGhlIHplcm9pbmcgb2YgdGhlIHJlZ2lzdGVy Cj4+IGhhcHBlbnMgYWZ0ZXIgdGhlIHByb2Nlc3Npbmcgb2YgdGhlIE1TUiBsb2FkIGxpc3QgKHdo aWNoIEkgZG91YnQgaXQgZG9lcykuCj4gCj4gSXQgaXMgZnVuY3Rpb25hbGx5IGJyb2tlbi4gIFJl c3RvcmF0aW9uIG9mIFhlbidzIGRlYnVnZ2luZyBzZXR0aW5nIG11c3QKPiBoYXBwZW4gZnJvbSB0 aGUgZmlyc3Qgdm1leGl0LCBub3QgdGhlIGZpcnN0IHZtZXhpdCBhZnRlciB0aGUgZ3Vlc3QgcGxh eXMKPiB3aXRoIE1TUl9ERUJVR0NUTC4KPiAKPiBXaXRoIHRoZSBjdXJyZW50IGJlaGF2aW91ciwg WGVuIGxvb3NlcyBpdHMgTVNSX0RFQlVHQ1RMIHNldHRpbmcgb24gYW55Cj4gcGNwdSB3aGVyZSBh biBIVk0gZ3Vlc3QgaGFzIGJlZW4gc2NoZWR1bGVkLCBhbmQgdGhlbiBmZWVkcyB0aGUgY3VycmVu dAo+IHZhbHVlICgwKSBpbnRvIHRoZSBob3N0IGxvYWQgbGlzdCwgZXZlbiB3aGVuIGl0IHdhcyBh dHRlbXB0aW5nIHRvIHNldCBhCj4gbm9uLXplcm8gdmFsdWUuCgpPaCwgaW5kZWVkLCB5b3UncmUg cmlnaHQuCgo+Pj4gQEAgLTE5MjAsMzggKzE5MTAsNDYgQEAgdm9pZCBsb2FkX1RSKHZvaWQpCj4+ PiAgICAgICAgICA6ICI9bSIgKG9sZF9nZHQpIDogInJtIiAoVFNTX0VOVFJZIDw8IDMpLCAibSIg KHRzc19nZHQpIDogIm1lbW9yeSIgKTsKPj4+ICB9Cj4+PiAgCj4+PiAtdm9pZCBwZXJjcHVfdHJh cHNfaW5pdCh2b2lkKQo+Pj4gK3N0YXRpYyB1aW50MzJfdCBjYWxjX2xlcl9tc3Iodm9pZCkKPj4g SGVyZSBhbmQgZWxzZXdoZXJlICJ1bnNpZ25lZCBpbnQiIHdvdWxkIGJlIG1vcmUgYXBwcm9wcmlh dGUgdG8gdXNlLgo+PiBXZSBkb24ndCByZXF1aXJlIE1TUiBpbmRleGVzIHRvIGJlIGV4YWN0bHkg MzIgYml0cyB3aWRlLCBidXQgb25seSBhdAo+PiBsZWFzdCBhcyB3aWRlLgo+IAo+IE1TUiBpbmRp Y2VzIGFyZSBhcmNoaXRlY3R1cmFsbHkgMzIgYml0cyB3aWRlLgoKQ29ycmVjdC4gSGVuY2UgZm9y IGNvbW11bmljYXRpbmcgc3VjaCB2YWx1ZXMgYmV0d2VlbiBmdW5jdGlvbnMgd2UgbmVlZAphIHR5 cGUgYXQgbGVhc3QgYXMgd2lkZSBhcyAzMiBiaXRzLCBub3QgZXhhY3RseSBhcyB3aWRlLiBUaGVy ZSdzIGEgcmVhc29uIHRoZQpzdGFuZGFyZCBhbHNvIGRlZmluZWQgdWludF9sZWFzdDMyX3QgZXQg YWw7IGl0J3MganVzdCB0aGF0IEkgdGhpbmsgdW5zaWduZWQgaW50CmlzIGxlc3MgdWdseSB0byBy ZWFkIGFuZCBmdWxmaWxscyB0aGUgc2FtZSBwdXJwb3NlICh3aXRoIHRoZSBwcmVyZXEgdGhhdCB3 ZQphc3N1bWUgdG8gcnVuIG9ubHkgb24gYXJjaGl0ZWN0dXJlcyB3aGVyZSB1bnNpZ25lZCBpbnQg aXMgYXQgbGVhc3QgMzIgYml0cwp3aWRlLCBqdXN0IGxpa2Ugd2UgbWFrZSBhbiBldmVuIG1vcmUg c3RyaWN0IGFzc3VtcHRpb24gb24gdW5zaWduZWQgbG9uZykuCgo+Pj4gK3ZvaWQgcGVyY3B1X3Ry YXBzX2luaXQodm9pZCkKPj4+ICt7Cj4+PiArICAgIHN1YmFyY2hfcGVyY3B1X3RyYXBzX2luaXQo KTsKPj4+ICsKPj4+ICsgICAgaWYgKCAhb3B0X2xlciApCj4+PiArICAgICAgICByZXR1cm47Cj4+ PiArCj4+PiArICAgIGlmICggIWxlcl9tc3IgJiYgKGxlcl9tc3IgPSBjYWxjX2xlcl9tc3IoKSkg KQo+Pj4gKyAgICAgICAgc2V0dXBfZm9yY2VfY3B1X2NhcChYODZfRkVBVFVSRV9YRU5fTEJSKTsK Pj4gVGhpcyBkb2VzIG5vdCBob2xkIHVwIHdpdGggdGhlIHByb21pc2UgdGhlIGRlc2NyaXB0aW9u IG1ha2VzOiBJZiBydW5uaW5nCj4+IG9uIGFuIHVucmVjb2duaXplZCBtb2RlbCwgY2FsY19sZXJf bXNyKCkgaXMgZ29pbmcgdG8gYmUgY2FsbGVkIG1vcmUgdGhhbgo+PiBvbmNlLiBJZiBpdCByZWFs bHkgd2FzIGNhbGxlZCBqdXN0IG9uY2UsIGl0IGNvdWxkIGFsc28gYmVjb21lIF9faW5pdC4gV2l0 aAo+PiB0aGUgaW52ZXJ0ZWQgc2Vuc2Ugb2YgdGhlIGZlYXR1cmUgZmxhZyAoYXMgc3VnZ2VzdGVk IGFib3ZlKSB5b3UgY291bGQKPj4gY2hlY2sgd2hldGhlciB0aGUgZmxhZyBiaXQgaXMgc2V0IG9y IGxlcl9tc3IgaXMgbm9uLXplcm8uCj4gCj4gSG1tIC0gSSBzdXBwb3NlIGl0IGRvZXNuJ3QgcXVp dGUgbWF0Y2ggdGhlIGRlc2NyaXB0aW9uLCBidXQgZG9lcyBpdAo+IG1hdHRlciAoaWYgSSB0d2Vh ayB0aGUgZGVzY3JpcHRpb24pPyAgSXQgaXMgZGVidWdnaW5nIGZ1bmN0aW9uYWxpdHksIGFuZAo+ IEkgZG9uJ3Qgc2VlIGFueSA2NGJpdCBtb2RlbHMgbWlzc2luZyBmcm9tIHRoZSBsaXN0LgoKTm9u LUludGVsLCBub24tQU1EIENQVXMgYXJlIGNsZWFybHkgbWlzc2luZy4gV2UgaGF2ZSBDZW50YXVy IChWSUEpCnN1cHBvcnQsIGFuZCB3ZSdyZSBnb2luZyB0byBnYWluIHN1cHBvcnQgZm9yIG9uZSBt b3JlIHJpZ2h0IGFmdGVyIHRoZQp0cmVlIHdhcyBicmFuY2hlZCBmb3IgNC4xMS4KCkphbgoKCgpf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwg bWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3Rz LnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs