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29 Aug 2019 23:29:22 -0700 Date: Fri, 30 Aug 2019 14:33:27 +0800 From: Chao Gao To: Jan Beulich Message-ID: <20190830063326.GC31905@gao-cwp> References: <1566177928-19114-1-git-send-email-chao.gao@intel.com> <1566177928-19114-16-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 v9 15/15] microcode: block #NMI handling when loading an ucode 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: xen-devel@lists.xenproject.org, Roger Pau =?iso-8859-1?Q?Monn=E9?= , Ashok Raj , Wei Liu , Andrew Cooper Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gVGh1LCBBdWcgMjksIDIwMTkgYXQgMDI6MjI6NDdQTSArMDIwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj5PbiAxOS4wOC4yMDE5IDAzOjI1LCBDaGFvIEdhbyB3cm90ZToKPj4gQEAgLTQ4MSwxMiAr NDc4LDI4IEBAIHN0YXRpYyBpbnQgZG9fbWljcm9jb2RlX3VwZGF0ZSh2b2lkICpwYXRjaCkKPj4g ICAgICByZXR1cm4gcmV0Owo+PiAgfQo+PiAgCj4+ICtzdGF0aWMgaW50IG1pY3JvY29kZV9ubWlf Y2FsbGJhY2soY29uc3Qgc3RydWN0IGNwdV91c2VyX3JlZ3MgKnJlZ3MsIGludCBjcHUpCj4+ICt7 Cj4+ICsgICAgLyogVGhlIGZpcnN0IHRocmVhZCBvZiBhIGNvcmUgaXMgdG8gbG9hZCBhbiB1cGRh dGUuIERvbid0IGJsb2NrIGl0LiAqLwo+PiArICAgIGlmICggY3B1ID09IGNwdW1hc2tfZmlyc3Qo cGVyX2NwdShjcHVfc2libGluZ19tYXNrLCBjcHUpKSB8fAo+PiArICAgICAgICAgbG9hZGluZ19z dGF0ZSAhPSBMT0FESU5HX0NBTExJTiApCj4+ICsgICAgICAgIHJldHVybiAwOwo+PiArCj4+ICsg ICAgY3B1bWFza19zZXRfY3B1KGNwdSwgJmNwdV9jYWxsaW5fbWFwKTsKPj4gKwo+PiArICAgIHdo aWxlICggbG9hZGluZ19zdGF0ZSAhPSBMT0FESU5HX0VYSVQgKQo+PiArICAgICAgICBjcHVfcmVs YXgoKTsKPj4gKwo+PiArICAgIHJldHVybiAwOwo+PiArfQo+Cj5CeSByZXR1cm5pbmcgMCB5b3Ug dGVsbCBkb19ubWkoKSB0byBjb250aW51ZSBwcm9jZXNzaW5nIHRoZSBOTUkuCj5TaW5jZSB5b3Ug Y2FuJ3QgdGVsbCB3aGV0aGVyIGEgbm9uLUlQSSBOTUkgaGFzIHN1cmZhY2VkIGF0IGFib3V0Cj50 aGUgc2FtZSB0aW1lIHRoaXMgaXMgZ2VuZXJhbGx5IHRoZSByaWdodCB0aGluZyBpbW8sIGJ1dCBo b3cgZG8KPnlvdSBwcmV2ZW50IHVua25vd25fbm1pX2Vycm9yKCkgZnJvbSBnZXR0aW5nIGVudGVy ZWQgd2hlbiBkb19ubWkoKQo+ZW5kcyB1cCBzZXR0aW5nIGhhbmRsZV91bmtub3duIHRvIHRydWU/ IChUaGUgcXVlc3Rpb24gaXMgbW9zdGx5Cj5yaGV0b3JpY2FsLCBidXQgdGhlcmUncyBhIGRpc2Nv bm5lY3QgYmV0d2VlbiBkb19ubWkoKSBjaGVja2luZwo+ImNwdSA9PSAwIiBhbmQgdGhlIGNvbnRy b2wgdGhyZWFkIHJ1bm5pbmcgb24KPmNwdW1hc2tfZmlyc3QoJmNwdV9vbmxpbmVfbWFwKSwgaS5l LiB5b3UgaW50cm9kdWNlIGEgd2VsbCBoaWRkZW4KPmRlcGVuZGVuY3kgb24gQ1BVIDAgbmV2ZXIg Z29pbmcgb2ZmbGluZS4gSU9XIG15IHJlcXVlc3QgaXMgdG8gYXQKPmxlYXN0IG1ha2UgdGhpcyBs ZXNzIHdlbGwgaGlkZGVuLCBzdWNoIHRoYXQgaXQgY2FuIGJlIG5vdGljZWQgaWYKPmFuZCB3aGVu IHNvbWVvbmUgZW5kZWF2b3JzIHRvIHJlbW92ZSBzYWlkIGxpbWl0YXRpb24uKQoKU2VlbXMgdGhl IGlzc3VlIGlzIHRoYXQgd2UgY291bGRuJ3Qgc2VuZCBJUEkgTk1JIHRvIEJTUCwgb3RoZXJ3aXNl CnVua25vd25fbm1pX2Vycm9yKCkgd291bGQgYmUgdHJpZ2dlci4gQW5kIGxvYWRpbmcgdWNvZGUg YWZ0ZXIKcmVuZGV6dm91c2luZyBhbGwgQ1BVcyBpbiBOTUkgaGFuZGxlciBleHBlY3RzIGFsbCBD UFVzIHRvIHJlY2VpdmUgSVBJCk5NSS4gU28gdGhpcyBhcHByb2FjaCBhbHdheXMgaGFzIHN1Y2gg aXNzdWUuCgpDb25zaWRlcmluZyBzZWxmX25taSBpcyBjYWxsZWQgYXQgYW5vdGhlciBwbGFjZSwg Y291bGQgd2UgcHJvdmlkZSBhCndheSB0byB0ZW1wb3JhcmlseSBzdXBwcmVzcyBvciAoZm9yY2Up IGlnbm9yZSB1bmtub3duIG5taSBlcnJvcj8KClRoYW5rcwpDaGFvCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhl bi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3Jn L21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs