From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH RESEND v1 5/7] x86: Implement Intel Processor Trace context switch Date: Wed, 2 May 2018 17:51:13 +0100 Message-ID: <86d05029-599e-8fa4-d98c-a340e08297f5@citrix.com> References: <1516039953-2988-1-git-send-email-luwei.kang@intel.com> <1516039953-2988-6-git-send-email-luwei.kang@intel.com> <20180426121148.36sxgfj2cjdbkhzn@citrix.com> <82D7661F83C1A047AF7DC287873BF1E167F673ED@SHSMSX101.ccr.corp.intel.com> <20180502151916.27bz45goyxso674f@citrix.com> <5AE9DCA502000078001C037E@prv1-mh.provo.novell.com> <20180502161511.mtcsu4zbsyhua7qm@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180502161511.mtcsu4zbsyhua7qm@citrix.com> Content-Language: en-GB List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Wei Liu , Jan Beulich Cc: Kevin Tian , Stefano Stabellini , Luwei Kang , George Dunlap , Tim Deegan , xen-devel@lists.xen.org, Jun Nakajima List-Id: xen-devel@lists.xenproject.org T24gMDIvMDUvMTggMTc6MTUsIFdlaSBMaXUgd3JvdGU6Cj4gT24gV2VkLCBNYXkgMDIsIDIwMTgg YXQgMDk6NDM6MzNBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4+IE9uIDAyLjA1LjE4 IGF0IDE3OjE5LCA8d2VpLmxpdTJAY2l0cml4LmNvbT4gd3JvdGU6Cj4+PiBPbiBGcmksIEFwciAy NywgMjAxOCBhdCAwODo1MzozMEFNICswMDAwLCBLYW5nLCBMdXdlaSB3cm90ZToKPj4+Pj4+IExv YWQvU3RvcmUgSW50ZWwgcHJvY2Vzc29yIHRyYWNlIHJlZ2lzdGVyIGluIGNvbnRleHQgc3dpdGNo Lgo+Pj4+Pj4gTVNSIElBMzJfUlRJVF9DVEwgaXMgbG9hZGVkL3N0b3JlZCBhdXRvbWF0aWNhbGx5 IGZyb20gVk1DUy4KPj4+Pj4+IFdoZW4gSW50ZWwgUFQgaXMgc3VwcG9ydGVkIGluIGd1ZXN0LCB3 ZSBuZWVkIGxvYWQvcmVzdG9yZSBQVCBNU1JzIG9ubHkKPj4+Pj4+IHdoZW4gUFQgaXMgZW5hYmxl ZCBpbiBndWVzdC4KPj4+Pj4+Cj4+Pj4+PiBTaWduZWQtb2ZmLWJ5OiBMdXdlaSBLYW5nIDxsdXdl aS5rYW5nQGludGVsLmNvbT4KPj4+Pj4gSXMgdGhlcmUgYSByZWFzb24gdG8gbm90IHVzZSB4c2F2 ZXMveHJzdG9ycyB3aGVuIHRoZXkgYXJlIGF2YWlsYWJsZT8KPj4+Pj4KPj4+PiBUaGVyZSBoYXZl IHR3byBtZXRob2QgdG8gaW1wbGVtZW50IGNvbnRleHQgc3dpdGNoKG1hbnVhbCBhbmQgeHNhdmUv eHJzdG9ycykuCj4+Pj4gVGhlIGZpcnN0IG1ldGhvZCBpcyBtb3JlIGRpcmVjdGx5IGFuZCBhbHNv IHdvbid0IGhhdmUgYW55IHBlcmZvcm1hbmNlIAo+Pj4gb3ZlcmhlYWQgaWYgaW50ZWwgUFQgaXMg ZGlzYWJsZWQuCj4+Pj4gSWYgdXNlIHhzYXZlL3hyc3RvcnMgd2UgbmVlZCB0byBjaGVjayBpZiBp dCBhdmFpbGFibGUgYW5kIHdoZXRoZXIgUFQgaXMgCj4+PiBzdXBwb3J0ZWQgIGluIFhTUyAoQ1BV SUQuMEQoZWN4PTEpLmVjeCkuCj4+Pj4gSSB3aWxsIHRoaW5rIGFib3V0IHRoaXMgc2NlbmFyaW8g YW5kIG1heSBtYWtlIGFuIGluZGVwZW5kZW50IHBhdGNoIHRvIGVuYWJsZSAKPj4+IGl0LiAKPj4+ Cj4+PiBGYWlyIGVub3VnaC4KPj4+Cj4+PiBJIGZpZ3VyZSBYZW4gZG9lc24ndCB1bmRlcnN0YW5k IHhzYXZlcyAoYW1vbmcgb3RoZXIgeHNhdmUqIGZlYXR1cmVzKSBhdAo+Pj4gdGhlIG1vbWVudCBz byBhIGRlZGljYXRlZCBzZXJpZXMgdG8gZW5hYmxlIHRoYXQgaXMgcmVxdWlyZWQuCj4+IEkgd291 bGRuJ3QgYmUgc3VycHJpc2VkIGlmIHRoZXJlIHdlcmUgYnVncywgYnV0IGlmIHlvdSBsb29rIGF0 IHhzdGF0ZS5jIHlvdSdsbAo+PiBmaW5kIGEgbnVtYmVyIG9mIHJlZmVyZW5jZXMgdG8gWFNBVkVT Lgo+IFdoYXQgSSBtZWFudCB3YXMgaW4geHN0YXRlLmM6eHN0YXRlX2luaXQ6Cj4KPiAgICAvKiBN YXNrIG91dCBmZWF0dXJlcyBub3QgY3VycmVudGx5IHVuZGVyc3Rvb2QgYnkgWGVuLiAqLwo+ICAg ICBlYXggJj0gKGNwdWZlYXRfbWFzayhYODZfRkVBVFVSRV9YU0FWRU9QVCkgfAo+ICAgICAgICAg ICAgIGNwdWZlYXRfbWFzayhYODZfRkVBVFVSRV9YU0FWRUMpIHwKPiAgICAgICAgICAgICBjcHVm ZWF0X21hc2soWDg2X0ZFQVRVUkVfWEdFVEJWMSkgfAo+ICAgICAgICAgICAgIGNwdWZlYXRfbWFz ayhYODZfRkVBVFVSRV9YU0FWRVMpKTsKPgo+IEFsc28gUFQgaXMgbWlzc2luZyBpbiBzdGF0ZSBj b21wb25lbnQgZGVmaW5pdGlvbnMgaW4geDg2LWRlZm5zLmguCgpQVCBpcyB0aGUgZmlyc3QgZGVm aW5lZCBYU1Mgc3RhdGUsIGFuZCB3YXMgaW50cm9kdWNlZCBhdCB0aGUgc2FtZSB0aW1lCmFzIFhT QVZFUy7CoCBYZW4ncyB4c2F2ZSBsb2dpYyBzaG91bGQgYmUgdXBkYXRlZCB0byB1c2UgWFNBVkVT L1hSU1RPUlMgaWYKYXZhaWxhYmxlICh3aGljaCwgb3RoZXIgdGhhbiBpdHMgcHJpdmlsZWdlZCBu YXR1cmUsIHdvcmtzIGlkZW50aWNhbGx5IHRvClhTQVZFQyBBRkFJQ1QpLgoKSWYgUFQgaXNuJ3Qg ZW5hYmxlZCwgdGhlbiBpdCB3b24ndCBiZSBzZXR0aW5nIGluIFhTUywgYW5kIFhTQVZFUyB3aWxs IGJlCmlkZW50aWNhbCB0byBYU0FWRUMsIHBlcmZvcm1hbmNlIHdpc2UuwqAgSGF2aW5nIHRoZSBt YW51YWwgcmRtc3Ivd3Jtc3IKY29udGV4dCBzd2l0Y2ggY29kZSBpcywgaG93ZXZlciwgc3VyZWx5 IGdvaW5nIHRvIGJlIHNsb3dlciB0aGFuIHVzaW5nClhTQVZFUyA/Cgp+QW5kcmV3CgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGlu ZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnBy b2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs