From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH] x86/vpmu_intel: Handle SMT consistently for programmable and fixed counters Date: Tue, 04 Apr 2017 01:56:50 -0600 Message-ID: <58E36DE2020000780014C704@prv-mh.provo.novell.com> References: <20170331144620.32244-1-mohit.gambhir@oracle.com> <58E241C4020000780014C06B@prv-mh.provo.novell.com> <83947c0e-6a72-a104-3d2a-f853b2260789@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <83947c0e-6a72-a104-3d2a-f853b2260789@oracle.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Mohit Gambhir Cc: kevin.tian@intel.com, boris.ostrovsky@oracle.com, jun.nakajima@intel.com, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDAzLjA0LjE3IGF0IDIxOjIzLCA8bW9oaXQuZ2FtYmhpckBvcmFjbGUuY29tPiB3cm90 ZToKCj4gCj4gT24gMDQvMDMvMjAxNyAwNjozNiBBTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4+ IE9uIDMxLjAzLjE3IGF0IDE2OjQ2LCA8bW9oaXQuZ2FtYmhpckBvcmFjbGUuY29tPiB3cm90ZToK Pj4+IFRoaXMgcGF0Y2ggbWFza3MgLkFueVRocmVhZCBiaXRzIGluIElBMzJfRklYRURfQ1RSX0NU UkwgTVNSIGZvciBhbGwKPj4+IHZlcnNpb25zIG9mIEludGVsIEFyaGNpdGVjdHVyYWwgUGVyZm9y bWFuY2UgTW9uaXRvcmluZy4gTm90ZSB0aGF0Cj4+PiAuQW55VGhyZWFkIGJpdCAoMjEpIGlzIGFs cmVhZHkgbWFza2VkIGluIElBMzJfUEVSRkVWVFNFTHggTVNScyBzaW5jZQo+Pj4gaHlwZXJ0aHJl YWRpbmcgaXMgbm90IGV4cG9zZWQgdG8gZ3Vlc3RzIGFuZCBJbnRlbCBTRE0gZGlzY291cmFnZXMg dGhlIHVzZSBvZgo+Pj4gLkFueVRocmVhZCBiaXQgaW4gdmlydHVhbGl6ZWQgZW52aXJvbm1lbnRz IChwZXIgc2VjdGlvbiAxOC4yLjMuMQo+Pj4gQW55VGhyZWFkIENvdW50aW5nIGFuZCBTb2Z0d2Fy ZSBFdm9sdXRpb24pCj4+IEFsbCBuaWNlIGFuZCBwcmVzdW1hYmx5IGNvcnJlY3QsIGJ1dCB0aGUg bWFpbiB0aGluZyBpcyBtaXNzaW5nOiBUaGUKPj4gYml0cyBhcmVuJ3QgZGVmaW5lZCBwcmlvciB0 byB2ZXJzaW9uIDMgYWZhaWNzLCBzbyAuLi4KPj4KPj4+IC0tLSBhL3hlbi9hcmNoL3g4Ni9jcHUv dnBtdV9pbnRlbC5jCj4+PiArKysgYi94ZW4vYXJjaC94ODYvY3B1L3ZwbXVfaW50ZWwuYwo+Pj4g QEAgLTk3OSw4ICs5NzksNyBAQCBpbnQgX19pbml0IGNvcmUyX3ZwbXVfaW5pdCh2b2lkKQo+Pj4g ICAgICAgZnVsbF93aWR0aF93cml0ZSA9IChjYXBzID4+IDEzKSAmIDE7Cj4+PiAgIAo+Pj4gICAg ICAgZml4ZWRfY3RybF9tYXNrID0gfigoMXVsbCA8PCAoZml4ZWRfcG1jX2NudCAqIEZJWEVEX0NU Ul9DVFJMX0JJVFMpKSAtIAo+IDEpOwo+Pj4gLSAgICBpZiAoIHZlcnNpb24gPT0gMiApCj4+PiAt ICAgICAgICBmaXhlZF9jdHJsX21hc2sgfD0gMHg0NDQ7Cj4+PiArICAgIGZpeGVkX2N0cmxfbWFz ayB8PSAweDQ0NDsKPj4gLi4uIHRoZSBtYWluIHRoaW5nIHRvIGV4cGxhaW4gaXMgd2h5IHJlbW92 aW5nIHRoZSBjb25kaXRpb25hbCBpcwo+PiAoYSkgY29ycmVjdCBhbmQgKGIpIG5lY2Vzc2FyeSAo Z29pbmcgdGhyb3VnaCB0aGUgdXNlcyBvZiB0aGUKPj4gdmFyaWFibGUgSSBjYW4gc2VlIChhKSB0 byBiZSB0cnVlLCBidXQgbm90IChiKSkuIEFuZCBvZiBjb3Vyc2UgaXQKPj4gd291bGQgYmUgcXVp dGUgaGVscGZ1bCBpZiB0aGUgbGl0ZXJhbCBudW1iZXIgY2hhbmdlZCB0byBhCj4+IG1hbmlmZXN0 IGNvbnN0YW50IGF0IG9uY2UsIG9yIGEgY29tbWVudCB3YXMgYXR0YWNoZWQgdG8KPj4gY2xhcmlm eSB3aGF0IHRoZSBudW1iZXIgcmVwcmVzZW50cy4KPiAKPiBJIGRvIGFncmVlIHRoYXQgcmVwbGFj aW5nIHRoZSBoYXJkIGNvZGVkIGNvbnN0YW50IHdpdGggYSBtYWNybyB3b3VsZCBiZSAKPiBuaWNl IGFuZCBJIHdpbGwgdXBkYXRlIHRoZSBwYXRjaCB3aXRoIHRoYXQuCj4gCj4gVGhlIGFuc3dlciB0 byB3aHkgdGhpcyBjaGFuZ2UgaXMgKGIpIG5lY2Vzc2FyeSBpcyB0d28gZm9sZHMgLQo+IAo+IDEu IFdlIG5lZWQgdG8gYmUgY29uc2lzdGVudCBpbiB0aGUgaW1wbGVtZW50YXRpb24uIEFzIHNhaWQg aW4gdGhlIGNvbW1pdCAKPiBsb2cgLSB3ZSBkaXNhYmxlIC5Bbnl0aHJlYWQgYml0IGluCj4gcHJv Z3JhbW1hYmxlIGNvdW50ZXJzIChyZWdhcmRsZXNzIG9mIHRoZSB2ZXJzaW9uKSBieSBtYXNraW5n IGJpdCAyMSBpbiAKPiBJQTMyX1BFUkZFVlRTRUx4LiAgKFNlZSBjb2RlIHNuaXBwZXQKPiBiZWxv dyBmcm9tIHZwbXVfaW50ZWwuYykKPiAKPiAgIC8qIE1hc2tzIHVzZWQgZm9yIHRlc3Rpbmcgd2hl dGhlciBhbmQgTVNSIGlzIHZhbGlkICovCj4gICAjZGVmaW5lIEFSQ0hfQ1RSTF9NQVNLICAofigo MXVsbCA8PCAzMikgLSAxKSB8ICgxdWxsIDw8IDIxKSkKPiAKPiBCdXQgd2UgbGVhdmUgaXQgZW5h YmxlZCBpbiBmaXhlZCBmdW5jdGlvbiBjb3VudGVycyBmb3IgdmVyc2lvbiAzLiAKPiBSZW1vdmlu ZyB0aGUgY29uZGl0aW9uIGRpc2FibGVzIHRoZSBiaXQgaW4gZml4ZWQgZnVuY3Rpb24KPiBjb3Vu dGVycyByZWdhcmRsZXNzIG9mIHRoZSB2ZXJzaW9uLCAgd2hpY2ggaXMgY29uc2lzdGVudCB3aXRo IHdoYXQgaXMgCj4gZG9uZSBmb3IgcHJvZ3JhbW1hYmxlIGNvdW50ZXJzLgo+IAo+IDIuIFdlIGRv bid0IHdhbnQgdG8gZXhwb3NlIGV2ZW50IGNvdW50cyBmcm9tIGFub3RoZXIgZ3Vlc3QgKG9yIAo+ IGh5cGVydmlzb3IpIHdoaWNoIGNhbiBoYXBwZW4gaWYgLkFueVRocmVhZCBiaXQgaXMgbm90IG1h c2tlZCBhbmQKPiBhIFZDUFUgaXMgb25seSBzY2hlZHVsZWQgdG8gcnVuIG9uIG9uZSBvZiB0aGUg aGFyZHdhcmUgdGhyZWFkcyBpbiBhIAo+IGh5cGVyLXRocmVhZGVkIENQVS4KCk9rYXksIEkgY2Fu IHNlZSBub3cgdGhhdCBJIGNvdWxkLCB3aXRoIHNvbWUgZGlmZmljdWx0eSwgaGF2ZQpyZWFkIHRo aXMgb3V0IG9mIHRoZSBvcmlnaW5hbCBkZXNjcmlwdGlvbi4gSSdkIGFwcHJlY2lhdGUgaWYgdGhp cwp3YXMgbWFkZSBtb3JlIGNsZWFyIHRob3VnaCAoYWxvbmcgdGhlIGxpbmVzIG9mIHRoZSBleHBs YW5hdGlvbgp5b3UgZ2F2ZSBpbiByZXBseSB0byBteSBxdWVzdGlvbikuCgpKYW4KCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGlu ZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4t ZGV2ZWwK