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12 Sep 2019 23:57:24 -0700 Date: Fri, 13 Sep 2019 15:01:28 +0800 From: Chao Gao To: Jan Beulich Message-ID: <20190913070128.GB14305@gao-cwp> References: <1568272949-1086-1-git-send-email-chao.gao@intel.com> <1568272949-1086-13-git-send-email-chao.gao@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Subject: Re: [Xen-devel] [PATCH v10 12/16] x86/microcode: Synchronize late microcode loading X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Sergey Dyasli , Kevin Tian , Ashok Raj , Wei Liu , Andrew Cooper , Jun Nakajima , xen-devel@lists.xenproject.org, Thomas Gleixner , Borislav Petkov , Roger Pau =?iso-8859-1?Q?Monn=E9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gVGh1LCBTZXAgMTIsIDIwMTkgYXQgMDU6MzI6MjJQTSArMDIwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj5PbiAxMi4wOS4yMDE5IDA5OjIyLCBDaGFvIEdhbyB3cm90ZToKPj4gQEAgLTI2NCwzOCAr MzM2LDE1OCBAQCBzdGF0aWMgaW50IG1pY3JvY29kZV91cGRhdGVfY3B1KGNvbnN0IHN0cnVjdCBt aWNyb2NvZGVfcGF0Y2ggKnBhdGNoKQo+PiAgICAgIHJldHVybiBlcnI7Cj4+ICB9Cj4+ICAKPj4g LXN0YXRpYyBsb25nIGRvX21pY3JvY29kZV91cGRhdGUodm9pZCAqcGF0Y2gpCj4+ICtzdGF0aWMg Ym9vbCB3YWl0X2Zvcl9zdGF0ZSh1bnNpZ25lZCBpbnQgc3RhdGUpCj4+ICt7Cj4+ICsgICAgd2hp bGUgKCBsb2FkaW5nX3N0YXRlICE9IHN0YXRlICkKPj4gKyAgICB7Cj4+ICsgICAgICAgIGlmICgg c3RhdGUgIT0gTE9BRElOR19FWElUICYmIGxvYWRpbmdfc3RhdGUgPT0gTE9BRElOR19FWElUICkK Pj4gKyAgICAgICAgICAgIHJldHVybiBmYWxzZTsKPgo+VGhpcyBpcyBhdCBsZWFzdCBzb21ld2hh dCBjb25mdXNpbmc6IFRoZXJlJ3Mgbm8gaW5kaWNhdGlvbiBoZXJlCj50aGF0ICJsb2FkaW5nX3N0 YXRlIiBtYXkgY2hhbmdlIGJlaGluZCB0aGUgZnVuY3Rpb24ncyBiYWNrLiBTbwo+aW4gZ2VuZXJh bCBvbmUgY291bGQgYmUgKGFuZCBJIGluaXRpYWxseSB3YXMpIHRlbXB0ZWQgdG8gc3VnZ2VzdAo+ ZHJvcHBpbmcgdGhlIGFwcGFyZW50bHkgcmVkdW5kYW50IGxlZnQgc2lkZSBvZiB0aGUgJiYuIEJ1 dCB0aGF0Cj53b3VsZCBlbmQgdXAgd3JvbmcgaWYgdGhlIGNvbXBpbGVyIHRyYW5zbGF0ZXMgdGhl IGFib3ZlIHRvIHR3bwo+c2VwYXJhdGUgcmVhZHMgb2YgImxvYWRpbmdfc3RhdGUiLiBUaGVyZWZv cmUgSSdkIGxpa2UgdG8gc3VnZ2VzdAo+Cj5zdGF0aWMgYm9vbCB3YWl0X2Zvcl9zdGF0ZSh0eXBl b2YobG9hZGluZ19zdGF0ZSkgc3RhdGUpCj57Cj4gICAgdHlwZW9mKGxvYWRpbmdfc3RhdGUpIGN1 cl9zdGF0ZTsKPgo+ICAgIHdoaWxlICggKGN1cl9zdGF0ZSA9IEFDQ0VTU19PTkNFKGxvYWRpbmdf c3RhdGUpKSAhPSBzdGF0ZSApCj4gICAgewo+ICAgICAgICBpZiAoIGN1cl9zdGF0ZSA9PSBMT0FE SU5HX0VYSVQgKQo+ICAgICAgICAgICAgcmV0dXJuIGZhbHNlOwo+ICAgICAgICBjcHVfcmVsYXgo KTsKPiAgICB9Cj4KPiAgICByZXR1cm4gdHJ1ZTsKPn0KPgo+b3Igc29tZXRoaW5nIHN1YnN0YW50 aWFsbHkgc2ltaWxhciAoaWYsIGUuZy4sIHlvdSBkaXNsaWtlIHRoZQo+dXNlIG9mIHR5cGVvZigp IGhlcmUpLgoKVGhlIGNvZGUgc25pcHBldCBhYm92ZSBpcyB0ZXJyaWZpYy4gV2lsbCB0YWtlIGl0 LgoKPgo+PiArc3RhdGljIGludCBzZWNvbmRhcnlfdGhyZWFkX2ZuKHZvaWQpCj4+ICt7Cj4+ICsg ICAgdW5zaWduZWQgaW50IHByaW1hcnkgPSBjcHVtYXNrX2ZpcnN0KHRoaXNfY3B1KGNwdV9zaWJs aW5nX21hc2spKTsKPj4gKwo+PiArICAgIGlmICggIXdhaXRfZm9yX3N0YXRlKExPQURJTkdfQ0FM TElOKSApCj4+ICsgICAgICAgIHJldHVybiAtRUJVU1k7Cj4+ICsKPj4gKyAgICBjcHVtYXNrX3Nl dF9jcHUoc21wX3Byb2Nlc3Nvcl9pZCgpLCAmY3B1X2NhbGxpbl9tYXApOwo+PiArCj4+ICsgICAg aWYgKCAhd2FpdF9mb3Jfc3RhdGUoTE9BRElOR19FWElUKSApCj4+ICsgICAgICAgIHJldHVybiAt RUJVU1k7Cj4KPlRoaXMgcmV0dXJuIGxvb2tzIHRvIGJlIHVucmVhY2hhYmxlLCBkb2Vzbid0IGl0 PwoKWWVzLiBJIHdpbGwgdXNlIGEgdmFyaWFibGUgdG8gaG9sZCBpdHMgcmV0dXJuIHZhbHVlIGFu ZCBhc3NlcnQgdGhlCnJldHVybiB2YWx1ZSBpcyBhbHdheXMgdHJ1ZS4KCk90aGVyIGNvbW1lbnRz IGFyZSByZWFzb25hYmxlIGFuZCBJIHdpbGwgZm9sbG93IHlvdXIgc3VnZ2VzdGlvbi4KClRoYW5r cwpDaGFvCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpY ZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs