From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH] x86/hvm: Intercept RDPMC when vPMU is disabled Date: Fri, 22 Feb 2019 18:48:03 -0500 Message-ID: <1e05bea0-50e8-e0b6-6c57-11e6545aa5ab@oracle.com> References: <1550870016-360-1-git-send-email-andrew.cooper3@citrix.com> <03a53709-1d0e-efb9-8bf0-56c8553c220e@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <03a53709-1d0e-efb9-8bf0-56c8553c220e@citrix.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Andrew Cooper , Xen-devel Cc: Juergen Gross , Kevin Tian , Wei Liu , Jun Nakajima , Jan Beulich , Suravee Suthikulpanit , Brian Woods , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= List-Id: xen-devel@lists.xenproject.org T24gMi8yMi8xOSA1OjQ0IFBNLCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+IE9uIDIyLzAyLzIwMTkg MjE6NTgsIEJvcmlzIE9zdHJvdnNreSB3cm90ZToKPj4gT24gMi8yMi8xOSA0OjEzIFBNLCBBbmRy ZXcgQ29vcGVyIHdyb3RlOgo+Pj4gdlBNVSBpc24ndCBzZWN1cml0eSBzdXBwb3J0ZWQsIGFuZCBp biBnZW5lcmFsIGd1ZXN0cyBjYW4ndCBhY2Nlc3MgYW55IG9mIHRoZQo+Pj4gcGVyZm9ybWFuY2Ug Y291bnRlciBNU1JzLiAgSG93ZXZlciwgdGhlIFJEUE1DIGluc3RydWN0aW9uIGlzbid0IGludGVy Y2VwdGVkLAo+Pj4gbWVhbmluZyB0aGF0IGd1ZXN0IHNvZnR3YXJlIGNhbiByZWFkIHRoZSBpbnN0 YW50YW5lb3VzIGNvdW50ZXIgdmFsdWVzLgo+Pj4KPj4+IFdoZW4gdlBNVSBpc24ndCBjb25maWd1 cmVkLCBpbnRlcmNlcHQgUkRQTUMgYW5kIHVuY29uZGl0aW9uYWxseSBmYWlsIGl0IGFzIGlmCj4+ PiBzb2Z0d2FyZSBoYXMgcmVxdWVzdGVkIGEgYmFkIGNvdW50ZXIgaW5kZXggKCNHUCBmYXVsdCku ICBJdCBpcyBtb2RlbCBzcGVjaWZpYwo+Pj4gYXMgdG8gd2hpY2ggY291bnRlcnMgYXJlIGF2YWls YWJsZSB0byBiZWdpbiB3aXRoLCBhbmQgaW4gbGV2ZWxsZWQgc2NlbmFyaW9zLAo+Pj4gdGhpcyBp bmZvcm1hdGlvbiBtYXkgbm90IGJlIGFjY3VyYXRlIGluIHRoZSBmaXJzdCBwbGFjZS4KPj4+Cj4+ PiBUaGlzIGNoYW5nZSBpc24ndCBleHBlY3RlZCB0byBoYXZlIGFueSBpbXBhY3Qgb24gVk1zLiAg VXNlcnNwYWNlIGlzIG5vdAo+Pj4gdXN1YWxseSBnaXZlbiBhY2Nlc3MgdG8gUkRQTUMgKFdpbmRv d3MgYXBwZWFyIHRvIGNvbXBsZXRlbHkgcHJvaGliaXQgaXQ7IExpbnV4Cj4+PiBpcyByZXN0cmlj dGVkIHRvIHJvb3QpLCBhbmQga2VybmVscyB3b24ndCBiZSBleGVjdXRpbmcgUkRQTUMgaW5zdHJ1 Y3Rpb25zIGlmCj4+PiB0aGVpciBQTVUgZHJpdmVycyBoYXZlIGZhaWxlZCB0byBzdGFydC4KPj4+ Cj4+PiBTaWduZWQtb2ZmLWJ5OiBBbmRyZXcgQ29vcGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXgu Y29tPgo+Pj4gLS0tCj4+PiBDQzogSmFuIEJldWxpY2ggPEpCZXVsaWNoQHN1c2UuY29tPgo+Pj4g Q0M6IFdlaSBMaXUgPHdlaS5saXUyQGNpdHJpeC5jb20+Cj4+PiBDQzogUm9nZXIgUGF1IE1vbm7D qSA8cm9nZXIucGF1QGNpdHJpeC5jb20+Cj4+PiBDQzogSnVuIE5ha2FqaW1hIDxqdW4ubmFrYWpp bWFAaW50ZWwuY29tPgo+Pj4gQ0M6IEtldmluIFRpYW4gPGtldmluLnRpYW5AaW50ZWwuY29tPgo+ Pj4gQ0M6IEJvcmlzIE9zdHJvdnNreSA8Ym9yaXMub3N0cm92c2t5QG9yYWNsZS5jb20+Cj4+PiBD QzogU3VyYXZlZSBTdXRoaWt1bHBhbml0IDxzdXJhdmVlLnN1dGhpa3VscGFuaXRAYW1kLmNvbT4K Pj4+IENDOiBCcmlhbiBXb29kcyA8YnJpYW4ud29vZHNAYW1kLmNvbT4KPj4+IENDOiBKdWVyZ2Vu IEdyb3NzIDxqZ3Jvc3NAc3VzZS5jb20+Cj4+Pgo+Pj4gVGhpcyBzaG91bGQgYmUgdGFrZW4gaW50 byBYZW4gNC4xMiBhbmQgYmFja3BvcnRlZCB0byB0aGUgc3RhYmxlIHJlbGVhc2VzLgo+Pj4gV2hp bGUgaXQgaXNuJ3QgYW4gWFNBIGl0c2VsZiwgaXQgaXMgYW4gaW5mb3JtYXRpb24gbGVhayAoWGVu J3MgTk1JIHdhdGNoZG9nIGluCj4+PiBwYXJ0aWN1bGFyKSB3aGljaCBjb3VsZCBiZSBhZHZhbnRh Z291cyB0byBhbiBhdHRhY2tlciB0cnlpbmcgdG8gZXhwbG9pdCBhIHJhY2UKPj4+IGNvbmRpdGlv bi4KPj4+Cj4+PiBUaGUgb25seSBvdGhlciBvcHRpb24gaXMgdG8gZW11bGF0ZSB0aGUgcmVwb3J0 ZWQgZmFtaWx5IGFuZCBvZmZlciBiYWNrIGFsbCAwJ3MKPj4+IGZvciB0aGUgYWNjZXNzYWJsZSBj b3VudGVycy4gIE9idmlvdXNseSB0aGlzIGlzIGEgbm9uLXN0YXJ0ZXIuCj4+IFdoZW4gVlBNVSBp cyBvZmYgTVNSIHJlYWRzIHJldHVybiB6ZXJvLgo+IFRoYXQgYmVoYXZpb3VyIGlzbid0IGxvbmcg Zm9yIHRoaXMgd29ybGQuCj4KPj4gV2hpbGUgaXQgaXMgZGViYXRhYmxlIHdoZXRoZXIgdGhpcyB0 aGUgcmlnaHQgYWN0aW9uLCBzaG91bGRuJ3QgcmRwbWMgYmVoYXZlIGluIHRoZSBzYW1lIGZhc2hp b24/Cj4gSSBzcGVjaWZpY2FsbHkgZG9uJ3Qgd2FudCB0byBwcm9wYWdhdGUgdGhlICJsZXRzIGNv bXBsZXRlIHdpdGggemVybyIKPiBiZWhhdmlvdXIgZnVydGhlciwgYmVjYXVzZSBpdCB0YWtlcyBh d2F5ICNHUCBmYXVsdHMgd2hpY2ggdGhlIGd1ZXN0Cj4gd291bGQgb3RoZXJ3aXNlIGdldC4KClRo ZSBndWVzdCBzaG91bGQgZ2V0IGEgI0dQIG9uIEludGVsIGlmIENQVUlEIGlzIG5vdCByZXBvcnRp bmcgYW55CmNvdW50ZXJzIGJ1dCBub3Qgb24gQU1EIHdoZXJlIHRoZSBmaXJzdCA0IGNvdW50ZXJz IGFyZSBhcmNoaXRlY3R1cmFsLgoKCgotYm9yaXMKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxp c3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9s aXN0aW5mby94ZW4tZGV2ZWw=