From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tamas K Lengyel Subject: Re: [PATCH v2] x86/altp2m: Allow setting the #VE info page for an arbitrary VCPU Date: Tue, 4 Sep 2018 14:40:45 -0600 Message-ID: References: <20180904045922.31609-1-apop@bitdefender.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]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fxI8a-0003yR-4j for xen-devel@lists.xenproject.org; Tue, 04 Sep 2018 20:41:24 +0000 Received: by mail-ed1-f68.google.com with SMTP id h4-v6so4331210edi.6 for ; Tue, 04 Sep 2018 13:41:23 -0700 (PDT) Received: from mail-wr1-f50.google.com (mail-wr1-f50.google.com. [209.85.221.50]) by smtp.gmail.com with ESMTPSA id w41-v6sm61107edd.92.2018.09.04.13.41.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Sep 2018 13:41:21 -0700 (PDT) Received: by mail-wr1-f50.google.com with SMTP id w11-v6so5328373wrc.5 for ; Tue, 04 Sep 2018 13:41:21 -0700 (PDT) In-Reply-To: <20180904045922.31609-1-apop@bitdefender.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Adrian Pop Cc: Wei Liu , Sergej Proskurin , Ian Jackson , Jan Beulich , Andrew Cooper , Xen-devel List-Id: xen-devel@lists.xenproject.org T24gTW9uLCBTZXAgMywgMjAxOCBhdCAxMDo1OSBQTSBBZHJpYW4gUG9wIDxhcG9wQGJpdGRlZmVu ZGVyLmNvbT4gd3JvdGU6Cj4KPiBJbiBhIGNsYXNzaWMgSFZJICsgWGVuIHNldHVwLCB0aGUgaW50 cm9zcGVjdGlvbiBlbmdpbmUgd291bGQgbW9uaXRvcgo+IGxlZ2FjeSBndWVzdCBwYWdlLXRhYmxl cyBieSBtYXJraW5nIHRoZW0gcmVhZC1vbmx5IGluc2lkZSB0aGUgRVBUOyB0aGlzCj4gd2F5IGFu eSBtb2RpZmljYXRpb24gZXhwbGljaXRseSBtYWRlIGJ5IHRoZSBndWVzdCBvciBpbXBsaWNpdGx5 IG1hZGUgYnkKPiB0aGUgQ1BVIHBhZ2Ugd2Fsa2VyIHdvdWxkIHRyaWdnZXIgYW4gRVBUIHZpb2xh dGlvbiwgd2hpY2ggd291bGQgYmUKPiBmb3J3YXJkZWQgYnkgWGVuIHRvIHRoZSBTVkEgYW5kIHRo dXMgdGhlIEhWSSBhZ2VudC4gIFRoZSBIVkkgYWdlbnQgd291bGQKPiBhbmFseXNlIHRoZSBtb2Rp ZmljYXRpb24sIGFuZCBhY3QgdXBvbiBpdCAtIGZvciBleGFtcGxlLCBhIHZpcnR1YWwgcGFnZQo+ IG1heSBiZSByZW1hcHBlZCAoaXRzIGd1ZXN0IHBoeXNpY2FsIGFkZHJlc3MgY2hhbmdlZCBpbnNp ZGUgdGhlCj4gcGFnZS10YWJsZSksIGluIHdoaWNoIGNhc2UgdGhlIGludHJvc3BlY3Rpb24gbG9n aWMgd291bGQgdXBkYXRlIHRoZQo+IHByb3RlY3Rpb24gYWNjb3JkaW5nbHkgKHJlbW92ZSBFUFQg aG9vayBvbiB0aGUgb2xkIGdwYSwgYW5kIHBsYWNlIGEgbmV3Cj4gRVBUIGhvb2sgb24gdGhlIG5l dyBncGEpLiAgSW4gb3RoZXIgY2FzZXMsIHRoZSBtb2RpZmljYXRpb24gbWF5IGJlIG9mIG5vCj4g aW50ZXJlc3QgdG8gdGhlIGludHJvc3BlY3Rpb24gZW5naW5lIC0gZm9yIGV4YW1wbGUsIHRoZSBh Y2Nlc3NlZC9kaXJ0eQo+IGJpdHMgbWF5IGJlIGNsZWFyZWQgYnkgdGhlIG9wZXJhdGluZyBzeXN0 ZW0gb3IgdGhlIGFjY2Vzc2VkL2RpcnR5IGJpdHMKPiBtYXkgYmUgc2V0IGJ5IHRoZSBDUFUgcGFn ZSB3YWxrZXIuCj4KPiBJbiBvdXIgdGVzdHMgd2UgZGlzY292ZXJlZCB0aGF0IHRoZSB2YXN0IG1h am9yaXR5IG9mIGd1ZXN0IHBhZ2UtdGFibGUKPiBtb2RpZmljYXRpb25zIGZhbGwgaW4gdGhlIHNl Y29uZCBjYXRlZ29yeSAoZXNwZWNpYWxseSBvbiBXaW5kb3dzIDEwIFJTNAo+IHg2NCAtIG1vcmUg dGhhbiA5NSUgb2YgQUxMIHRoZSBwYWdlLXRhYmxlIG1vZGlmaWNhdGlvbnMgYXJlIGlycmVsZXZh bnQgdG8KPiB1cykgLSB0aGV5IGFyZSBvZiBubyBpbnRlcmVzdCB0byB0aGUgaW50cm9zcGVjdGlv biBsb2dpYywgYnV0IHRoZXkKPiB0cmlnZ2VyIGEgdmVyeSBjb3N0bHkgRVBUIHZpb2xhdGlvbiBu b25ldGhlbGVzcy4gIFRoZXJlZm9yZSwgd2UgZGVjaWRlZAo+IHRvIG1ha2UgdXNlIG9mIHRoZSBu ZXcgI1ZFICYgVk1GVU5DIGZlYXR1cmVzIGluIHJlY2VudCBJbnRlbCBDUFVzIHRvCj4gYWNjZWxl cmF0ZSB0aGUgZ3Vlc3QgcGFnZS10YWJsZXMgbW9uaXRvcmluZyBpbiB0aGUgZm9sbG93aW5nIHdh eToKPgo+IDEuIEVhY2ggbW9uaXRvcmVkIHBhZ2UtdGFibGUgd291bGQgYmUgZmxhZ2dlZCBhcyBi ZWluZyBjb252ZXJ0aWJsZQo+ICAgIGluc2lkZSB0aGUgRVBULCB0aHVzIGVuYWJsaW5nIHRoZSBD UFUgdG8gZGVsaXZlciBhIHZpcnR1YWxpemF0aW9uCj4gICAgZXhjZXB0aW9uIHRvIGhlIGd1ZXN0 IGluc3RlYWQgb2YgZ2VuZXJhdGluZyBhIHRyYWRpdGlvbmFsIEVQVAo+ICAgIHZpb2xhdGlvbi4K PiAyLiBXZSBpbmplY3QgYSBzbWFsbCBmaWx0ZXJpbmcgZHJpdmVyIGluc2lkZSB0aGUgcHJvdGVj dGVkIGd1ZXN0IFZNLAo+ICAgIHdoaWNoIHdvdWxkIGludGVyY2VwdCB0aGUgdmlydHVhbGl6YXRp b24gZXhjZXB0aW9uIGluIG9yZGVyIHRvIGhhbmRsZQo+ICAgIGd1ZXN0IHBhZ2UtdGFibGUgbW9k aWZpY2F0aW9ucy4KPiAzLiBXZSBjcmVhdGUgYSBkZWRpY2F0ZWQgRVBUIHZpZXcgKGFsdHAybSkg Zm9yIHRoZSBpbi1ndWVzdCBhZ2VudCwgd2hpY2gKPiAgICB3b3VsZCBpc29sYXRlIHRoZSBhZ2Vu dCBmcm9tIHRoZSByZXN0IG9mIHRoZSBvcGVyYXRpbmcgc3lzdGVtOyB0aGUKPiAgICBhZ2VudCB3 aWxsIHN3aXRjaCBpbiBhbmQgb3V0IG9mIHRoZSBwcm90ZWN0ZWQgRVBUIHZpZXcgdmlhIHRoZSBW TUZVTkMKPiAgICBpbnN0cnVjdGlvbiBwbGFjZWQgaW5zaWRlIGEgdHJhbXBvbGluZSBwYWdlLCB0 aHVzIG1ha2luZyB0aGUgYWdlbnQKPiAgICBpbW11bmUgdG8gbWFsaWNpb3VzIGNvZGUgaW5zaWRl IHRoZSBndWVzdC4KPgo+IFRoaXMgd2F5LCBhbGwgdGhlIHBhZ2UtdGFibGUgYWNjZXNzZXMgd291 bGQgZ2VuZXJhdGUgYQo+IHZpcnR1YWxpemF0aW9uLWV4Y2VwdGlvbiBpbnNpZGUgdGhlIGd1ZXN0 IGluc3RlYWQgb2YgYSBjb3N0bHkgRVBUCj4gdmlvbGF0aW9uOyB0aGUgI1ZFIGFnZW50IHdvdWxk IGVtdWxhdGUgYW5kIGFuYWx5c2UgdGhlIG1vZGlmaWNhdGlvbiwgYW5kCj4gZGVjaWRlIHdoZXRo ZXIgaXQgaXMgcmVsZXZhbnQgZm9yIHRoZSBtYWluIGludHJvc3BlY3Rpb24gbG9naWM7IGlmIGl0 IGlzCj4gcmVsZXZhbnQsIGl0IHdvdWxkIGRvIGEgVk1DQUxMIGFuZCBub3RpZnkgdGhlIGludHJv c3BlY3Rpb24gZW5naW5lCj4gYWJvdXQgdGhlIG1vZGlmaWNhdGlvbjsgb3RoZXJ3aXNlLCBpdCB3 b3VsZCByZXN1bWUgbm9ybWFsIGluc3RydWN0aW9uCj4gZXhlY3V0aW9uLCB0aHVzIGF2b2lkaW5n IGEgdmVyeSBjb3N0bHkgVk0gZXhpdC4KPgo+IFNpZ25lZC1vZmYtYnk6IEFkcmlhbiBQb3AgPGFw b3BAYml0ZGVmZW5kZXIuY29tPgo+IC0tLQo+IENoYW5nZXMgaW4gdjI6Cj4gLSByZW1vdmUgdGhl ICJfX2dldF92Y3B1KCkiIGhlbHBlcgo+IC0tLQo+ICB0b29scy9saWJ4Yy94Y19hbHRwMm0uYyB8 ICAxIC0KPiAgeGVuL2FyY2gveDg2L2h2bS9odm0uYyAgfCAxOSArKysrKysrKysrLS0tLS0tLS0t Cj4gIDIgZmlsZXMgY2hhbmdlZCwgMTAgaW5zZXJ0aW9ucygrKSwgMTAgZGVsZXRpb25zKC0pCj4K PiBkaWZmIC0tZ2l0IGEvdG9vbHMvbGlieGMveGNfYWx0cDJtLmMgYi90b29scy9saWJ4Yy94Y19h bHRwMm0uYwo+IGluZGV4IGNlNGExZTRkNjAuLjUyOGU5MjlkN2EgMTAwNjQ0Cj4gLS0tIGEvdG9v bHMvbGlieGMveGNfYWx0cDJtLmMKPiArKysgYi90b29scy9saWJ4Yy94Y19hbHRwMm0uYwo+IEBA IC02OCw3ICs2OCw2IEBAIGludCB4Y19hbHRwMm1fc2V0X2RvbWFpbl9zdGF0ZSh4Y19pbnRlcmZh Y2UgKmhhbmRsZSwgdWludDMyX3QgZG9tLCBib29sIHN0YXRlKQo+ICAgICAgcmV0dXJuIHJjOwo+ ICB9Cj4KPiAtLyogVGhpcyBpcyBhIGJpdCBvZGQgdG8gbWUgdGhhdCBpdCBhY3RzIG9uIGN1cnJl bnQuLiAqLwo+ICBpbnQgeGNfYWx0cDJtX3NldF92Y3B1X2VuYWJsZV9ub3RpZnkoeGNfaW50ZXJm YWNlICpoYW5kbGUsIHVpbnQzMl90IGRvbWlkLAo+ICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgdWludDMyX3QgdmNwdWlkLCB4ZW5fcGZuX3QgZ2ZuKQo+ICB7Cj4gZGlmZiAt LWdpdCBhL3hlbi9hcmNoL3g4Ni9odm0vaHZtLmMgYi94ZW4vYXJjaC94ODYvaHZtL2h2bS5jCj4g aW5kZXggNzJjNTFmYWVjYi4uNDljM2JiZWU5NCAxMDA2NDQKPiAtLS0gYS94ZW4vYXJjaC94ODYv aHZtL2h2bS5jCj4gKysrIGIveGVuL2FyY2gveDg2L2h2bS9odm0uYwo+IEBAIC00NTMzLDggKzQ1 MzMsNyBAQCBzdGF0aWMgaW50IGRvX2FsdHAybV9vcCgKPiAgICAgICAgICByZXR1cm4gLUVPUE5P VFNVUFA7Cj4gICAgICB9Cj4KPiAtICAgIGQgPSAoIGEuY21kICE9IEhWTU9QX2FsdHAybV92Y3B1 X2VuYWJsZV9ub3RpZnkgKSA/Cj4gLSAgICAgICAgcmN1X2xvY2tfZG9tYWluX2J5X2FueV9pZChh LmRvbWFpbikgOiByY3VfbG9ja19jdXJyZW50X2RvbWFpbigpOwo+ICsgICAgZCA9IHJjdV9sb2Nr X2RvbWFpbl9ieV9hbnlfaWQoYS5kb21haW4pOwoKRG9lcyByY3VfbG9ja19kb21haW5fYnlfYW55 X2lkIHdvcmsgaWYgaXRzIGZyb20gdGhlIGN1cnJlbnQgZG9tYWluPyBJZgpub3QsIGRvZXNuJ3Qg dGhhdCBjaGFuZ2UgdGhpcyBmdW5jdGlvbidzIGFjY2Vzc2liaWxpdHkgdG8gYmUgZnJvbQpleGNs dXNpdmVseSB1c2FibGUgb25seSBieSB0aGUgb3V0c2lkZSBhZ2VudD8KCj4KPiAgICAgIGlmICgg ZCA9PSBOVUxMICkKPiAgICAgICAgICByZXR1cm4gLUVTUkNIOwo+IEBAIC00NjA1LDI2ICs0NjA0 LDI4IEBAIHN0YXRpYyBpbnQgZG9fYWx0cDJtX29wKAo+Cj4gICAgICBjYXNlIEhWTU9QX2FsdHAy bV92Y3B1X2VuYWJsZV9ub3RpZnk6Cj4gICAgICB7Cj4gLSAgICAgICAgc3RydWN0IHZjcHUgKmN1 cnIgPSBjdXJyZW50Owo+ICsgICAgICAgIHN0cnVjdCB2Y3B1ICp2Owo+ICAgICAgICAgIHAybV90 eXBlX3QgcDJtdDsKPgo+IC0gICAgICAgIGlmICggYS51LmVuYWJsZV9ub3RpZnkucGFkIHx8IGEu ZG9tYWluICE9IERPTUlEX1NFTEYgfHwKPiAtICAgICAgICAgICAgIGEudS5lbmFibGVfbm90aWZ5 LnZjcHVfaWQgIT0gY3Vyci0+dmNwdV9pZCApCj4gKyAgICAgICAgaWYgKCBhLnUuZW5hYmxlX25v dGlmeS5wYWQgfHwKPiArICAgICAgICAgICAgIGEudS5lbmFibGVfbm90aWZ5LnZjcHVfaWQgPj0g ZC0+bWF4X3ZjcHVzICkKPiAgICAgICAgICB7Cj4gICAgICAgICAgICAgIHJjID0gLUVJTlZBTDsK PiAgICAgICAgICAgICAgYnJlYWs7Cj4gICAgICAgICAgfQo+Cj4gLSAgICAgICAgaWYgKCAhZ2Zu X2VxKHZjcHVfYWx0cDJtKGN1cnIpLnZlaW5mb19nZm4sIElOVkFMSURfR0ZOKSB8fAo+IC0gICAg ICAgICAgICAgbWZuX2VxKGdldF9nZm5fcXVlcnlfdW5sb2NrZWQoY3Vyci0+ZG9tYWluLAo+ICsg ICAgICAgIHYgPSBkLT52Y3B1W2EudS5lbmFibGVfbm90aWZ5LnZjcHVfaWRdOwo+ICsKPiArICAg ICAgICBpZiAoICFnZm5fZXEodmNwdV9hbHRwMm0odikudmVpbmZvX2dmbiwgSU5WQUxJRF9HRk4p IHx8Cj4gKyAgICAgICAgICAgICBtZm5fZXEoZ2V0X2dmbl9xdWVyeV91bmxvY2tlZCh2LT5kb21h aW4sCj4gICAgICAgICAgICAgICAgICAgICAgYS51LmVuYWJsZV9ub3RpZnkuZ2ZuLCAmcDJtdCks IElOVkFMSURfTUZOKSApCj4gICAgICAgICAgewo+ICAgICAgICAgICAgICByYyA9IC1FSU5WQUw7 Cj4gICAgICAgICAgICAgIGJyZWFrOwo+ICAgICAgICAgIH0KPgo+IC0gICAgICAgIHZjcHVfYWx0 cDJtKGN1cnIpLnZlaW5mb19nZm4gPSBfZ2ZuKGEudS5lbmFibGVfbm90aWZ5Lmdmbik7Cj4gLSAg ICAgICAgYWx0cDJtX3ZjcHVfdXBkYXRlX3ZtZnVuY192ZShjdXJyKTsKPiArICAgICAgICB2Y3B1 X2FsdHAybSh2KS52ZWluZm9fZ2ZuID0gX2dmbihhLnUuZW5hYmxlX25vdGlmeS5nZm4pOwo+ICsg ICAgICAgIGFsdHAybV92Y3B1X3VwZGF0ZV92bWZ1bmNfdmUodik7Cj4gICAgICAgICAgYnJlYWs7 Cj4gICAgICB9Cj4KPiAtLQo+IDIuMTguMAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMu eGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3Rp bmZvL3hlbi1kZXZlbA==