From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH] xen/vPMU: Do not clobber IA32_MISC_ENABLE Date: Mon, 7 Mar 2016 10:11:16 -0500 Message-ID: <56DD9A14.6070602@oracle.com> References: <1457360841-28587-1-git-send-email-andrew.cooper3@citrix.com> <56DD941E.2000008@oracle.com> <56DD970E.9040704@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <56DD970E.9040704@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Andrew Cooper , Xen-devel Cc: Jan Beulich List-Id: xen-devel@lists.xenproject.org T24gMDMvMDcvMjAxNiAwOTo1OCBBTSwgQW5kcmV3IENvb3BlciB3cm90ZToKPiBPbiAwNy8wMy8x NiAxNDo0NSwgQm9yaXMgT3N0cm92c2t5IHdyb3RlOgo+PiBPbiAwMy8wNy8yMDE2IDA5OjI3IEFN LCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+Pj4gVGhlIFZNWCBSRE1TUiBpbnRlcmNlcHQgZm9yIE1T Ul9JQTMyX01JU0NfRU5BQkxFIGZhbGxzIHRocm91Z2ggaW50bwo+Pj4gdnBtdV9kb19yZG1zcigp LCBzbyB0aGF0IGNvcmUyX3ZwbXVfZG9fcmRtc3IoKSBtYXkgcGxheSB3aXRoIHRoZSBQVFMKPj4+ IGFuZCBQRUJTCj4+PiBVTkFWQUlMIGJpdHMuCj4+Pgo+Pj4gU29tZSA2NGJpdCBXaW5kb3dzIGlu Y2x1ZGUgSUEzMl9NSVNDX0VOQUJMRSBpbiB0aGUgc2V0IG9mIGl0ZW1zCj4+PiBjaGVja2VkIGJ5 Cj4+PiBQYXRjaEd1YXJkLCBhbmQgd2lsbCBzdWZmZXIgYSBCU09EIDB4MTA5Cj4+PiBDUklUSUNB TF9TVFJVQ1RVUkVfQ09SUlVQVElPTiBpZiB0aGUKPj4+IGNvbnRlbnRzIGNoYW5nZSBvbiBtaWdy YXRlLgo+Pj4KPj4+IFRoZSB2UE1VIGluZnJhc3RydWN0dXJlIHNob3VsZCBub3QgY2xvYmJlciBJ QTMyX01JU0NfRU5BQkxFIGF0IGFsbC4KPj4+Cj4+PiBTaWduZWQtb2ZmLWJ5OiBBbmRyZXcgQ29v cGVyIDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPgo+Pj4gLS0tCj4+PiBDQzogSmFuIEJldWxp Y2ggPEpCZXVsaWNoQHN1c2UuY29tPgo+Pj4gQ0M6IEJvcmlzIE9zdHJvdnNreSA8Ym9yaXMub3N0 cm92c2t5QG9yYWNsZS5jb20+Cj4+Pgo+Pj4gVGhpcyBhcHBlYXJzIHRvIGhhdmUgYmVlbiBicm9r ZW4gc2luY2UgdGhlIHZQTVUgY29kZSB3YXMgZmlyc3QKPj4+IGludHJvZHVjZWQuICBJdAo+Pj4g YXBwZWFycyB0byBoYXZlIGx1cmtlZCB0aGlzIGxvZyBkdWUgdG8gYSBob2xlIChub3cgZml4ZWQp IGluIFhlblNlcnZlcnMKPj4+IHVwZ3JhZGUgdGVzdGluZy4gIFRoZSBCU09EcyBvY2N1ciB+ODAl IG9mIHRoZSB0aW1lIG9uIFdpbiA4IHRocnUgMTAsIGJ1dAo+Pj4gYXBwZWFyIHZlcnkgaGFyZCB0 byBwcm92b2tlIG9uIFdpbmRvd3MgNy4KPj4+Cj4+PiBUaGlzIE1TUiBzdGlsbCBsZWFrcyBtb3N0 bHkgaG9zdCBzdGF0ZSB0aHJvdWdoIGludG8gdGhlIGd1ZXN0Lgo+Pj4gVGhlcmVmb3JlCj4+PiBt aWdyYXRpb24gb2Ygd2luZG93cyBpcyBzdGlsbCBsaWFibGUgdG8gY3Jhc2ggaWYgbW92aW5nIGJl dHdlZW4gdHdvCj4+PiBub24taWRlbnRpY2FsIHNlcnZlcnMuICBJIG5lZWQgdG8gZ2V0IHByb3Bl ciBNU1IgbGV2ZWxsaW5nIHNvcnRlZAo+Pj4gYmVmb3JlIHRoaXMKPj4+IGlzc3VlIGNhbiBiZSBy ZXNvbHZlZCBmdWxseS4KPj4+IC0tLQo+Pj4gICAgeGVuL2FyY2gveDg2L2NwdS92cG11LmMgfCAy ICstCj4+PiAgICAxIGZpbGUgY2hhbmdlZCwgMSBpbnNlcnRpb24oKyksIDEgZGVsZXRpb24oLSkK Pj4+Cj4+PiBkaWZmIC0tZ2l0IGEveGVuL2FyY2gveDg2L2NwdS92cG11LmMgYi94ZW4vYXJjaC94 ODYvY3B1L3ZwbXUuYwo+Pj4gaW5kZXggMjM3YjVmZi4uMmY5ZGRmNiAxMDA2NDQKPj4+IC0tLSBh L3hlbi9hcmNoL3g4Ni9jcHUvdnBtdS5jCj4+PiArKysgYi94ZW4vYXJjaC94ODYvY3B1L3ZwbXUu Ywo+Pj4gQEAgLTE2OSw3ICsxNjksNyBAQCBpbnQgdnBtdV9kb19tc3IodW5zaWduZWQgaW50IG1z ciwgdWludDY0X3QKPj4+ICptc3JfY29udGVudCwKPj4+ICAgICAgICByZXR1cm4gcmV0Owo+Pj4g ICAgICAgbm9wOgo+Pj4gLSAgICBpZiAoICFpc193cml0ZSApCj4+PiArICAgIGlmICggIWlzX3dy aXRlICYmIChtc3IgIT0gTVNSX0lBMzJfTUlTQ19FTkFCTEUpICkKPj4+ICAgICAgICAgICAgKm1z cl9jb250ZW50ID0gMDsKPj4+ICAgICAgICAgIHJldHVybiAwOwo+Pgo+PiBUaGlzIGlzIEludGVs LXNwZWNpZmljIHJlZ2lzdGVyIHNvIHRoZSB0ZXN0IHNob3VsZCByZWFsbHkgYmUgaGFwcGVuaW5n Cj4+IGluIHZwbXVfaW50ZWwuYy4gT2YgY291cnNlIHRoZW4geW91J2QgbmVlZCB0byBhbHdheXMg ZGVyZWZlcmVuY2UKPj4gdmNwdV92cG11KCkgYW5kIHBvc3NpYmx5IGFkZCBtb3JlIGNoZWNrcyB0 byByZWFkL3dyaXRlIG9wcyAodG8gbWlycm9yCj4+IHRoZSBvbmUgYXQgdGhlIHRvcCBvZiB2cG11 X2RvX21zcigpKS4KPj4KPj4gU28gbWF5YmUgYXQgbGVhc3QgaGF2ZSB0aGUgdmVuZG9yIGNoZWNr IHRvbz8/Cj4gU3RyaWN0bHkgc3BlYWtpbmcsIGlmIHdlIHdlcmUgdG8gZG8gYSB2ZW5kb3IgY2hl Y2ssIGl0IHNob3VsZCBiZSBhIGd1ZXN0Cj4gdmVuZG9yIGNoZWNrLCBub3QgYSBob3N0IHZlbmRv ciBjaGVjay4KPgo+IE9UT0gsIHdlIHdvbid0IGdldCBoZXJlIG9uIGEgbm9uLUludGVsIGhvc3Qg c3lzdGVtLCBhbmQgZW11bGF0aW5nIGEKPiBjcm9zcy12ZW5kb3IgdlBNVSBpcyBnb2luZyB0byBl bmQgaW4gZGlzYXN0ZXIuICBJIHBlcnNvbmFsbHkgZG9uJ3QgdGhpbmsKPiBpdHMgd29ydGggaXQu CgpJIHdhc24ndCB0aGlua2luZyBhYm91dCBjcm9zcy12ZW5kb3IgY2FzZXMuIEJ1dCBJIGZvcmdv dCB0aGF0IHdlIG5vdyBnbyAKdG8gVlBNVSBjb2RlIG9ubHkgZm9yIFZQTVUgcmVnaXN0ZXJzLgoK UmV2aWV3ZWQtYnk6IEJvcmlzIE9zdHJvdnNreSA8Ym9yaXMub3N0cm92c2t5QG9yYWNsZS5jb20+ CgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRl dmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwOi8vbGlzdHMueGVu Lm9yZy94ZW4tZGV2ZWwK