From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH 1/2] x86/microcode: Synchronize late microcode loading Date: Fri, 13 Apr 2018 09:49:17 -0600 Message-ID: <5AD0D17D02000078001BB298@prv1-mh.provo.novell.com> References: <1522393141-90344-1-git-send-email-chao.gao@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1522393141-90344-1-git-send-email-chao.gao@intel.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Chao Gao Cc: Andrew Cooper , Kevin Tian , Ashok Raj , Jun Nakajima , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDMwLjAzLjE4IGF0IDA4OjU5LCA8Y2hhby5nYW9AaW50ZWwuY29tPiB3cm90ZToKPiBA QCAtMjgxLDI0ICsyODcsNTIgQEAgc3RhdGljIGludCBtaWNyb2NvZGVfdXBkYXRlX2NwdShjb25z dCB2b2lkICpidWYsIHNpemVfdCBzaXplKQo+ICAgICAgcmV0dXJuIGVycjsKPiAgfQo+ICAKPiAt c3RhdGljIGxvbmcgZG9fbWljcm9jb2RlX3VwZGF0ZSh2b2lkICpfaW5mbykKPiArc3RhdGljIGlu dCBfX3dhaXRfZm9yX2NwdXMoYXRvbWljX3QgKmNudCwgaW50IHRpbWVvdXQpCgpObyBuZXcgZG91 YmxlLXVuZGVyc2NvcmUgcHJlZml4ZWQgZnVuY3Rpb25zIHBsZWFzZS4KCj4gIHsKPiAtICAgIHN0 cnVjdCBtaWNyb2NvZGVfaW5mbyAqaW5mbyA9IF9pbmZvOwo+IC0gICAgaW50IGVycm9yOwo+ICsg ICAgaW50IGNwdXMgPSBudW1fb25saW5lX2NwdXMoKTsKCnVuc2lnbmVkIGludAoKPiAtICAgIEJV R19PTihpbmZvLT5jcHUgIT0gc21wX3Byb2Nlc3Nvcl9pZCgpKTsKPiArICAgIGF0b21pY19pbmMo Y250KTsKPiAgCj4gLSAgICBlcnJvciA9IG1pY3JvY29kZV91cGRhdGVfY3B1KGluZm8tPmJ1ZmZl ciwgaW5mby0+YnVmZmVyX3NpemUpOwo+IC0gICAgaWYgKCBlcnJvciApCj4gLSAgICAgICAgaW5m by0+ZXJyb3IgPSBlcnJvcjsKPiArICAgIHdoaWxlIChhdG9taWNfcmVhZChjbnQpICE9IGNwdXMp CgpUaGVyZSBhcmUgYSBudW1iZXIgb2Ygc3R5bGUgaXNzdWVzIGluIHRoZSBwYXRjaCwgbW9zdGx5 IChsaWtlIGhlcmUpIG1pc3NpbmcKYmxhbmtzLgoKPiArICAgIHsKPiArICAgICAgICBpZiAoIHRp bWVvdXQgPD0gMCApCj4gKyAgICAgICAgewo+ICsgICAgICAgICAgICBwcmludGsoIlRpbWVvdXQg d2hlbiB3YWl0aW5nIGZvciBDUFVzIGNhbGxpbmcgaW5cbiIpOwo+ICsgICAgICAgICAgICByZXR1 cm4gLTE7Cj4gKyAgICAgICAgfQo+ICsgICAgICAgIHVkZWxheSgxKTsKPiArICAgICAgICB0aW1l b3V0LS07Cj4gKyAgICB9Cj4gIAo+IC0gICAgaW5mby0+Y3B1ID0gY3B1bWFza19uZXh0KGluZm8t PmNwdSwgJmNwdV9vbmxpbmVfbWFwKTsKPiAtICAgIGlmICggaW5mby0+Y3B1IDwgbnJfY3B1X2lk cyApCj4gLSAgICAgICAgcmV0dXJuIGNvbnRpbnVlX2h5cGVyY2FsbF9vbl9jcHUoaW5mby0+Y3B1 LCBkb19taWNyb2NvZGVfdXBkYXRlLCBpbmZvKTsKPiArICAgIHJldHVybiAwOwo+ICt9Cj4gIAo+ IC0gICAgZXJyb3IgPSBpbmZvLT5lcnJvcjsKPiAtICAgIHhmcmVlKGluZm8pOwo+IC0gICAgcmV0 dXJuIGVycm9yOwo+ICtzdGF0aWMgaW50IGRvX21pY3JvY29kZV91cGRhdGUodm9pZCAqX2luZm8p Cj4gK3sKPiArICAgIHN0cnVjdCBtaWNyb2NvZGVfaW5mbyAqaW5mbyA9IF9pbmZvOwo+ICsgICAg aW50IGVycm9yLCByZXQgPSAwOwo+ICsKPiArICAgIGVycm9yID0gX193YWl0X2Zvcl9jcHVzKCZp bmZvLT5jcHVfaW4sIFVTRUNfUEVSX1NFQyk7CgpXaHkgdGhpcyBsb25nIGEgdGltZW91dCBoZXJl PwoKPiArICAgIGlmICggZXJyb3IgKQo+ICsgICAgewo+ICsgICAgICAgIHJldCA9IC1FQlVTWTsK PiArICAgICAgICByZXR1cm4gcmV0Owo+ICsgICAgfQo+ICsKPiArICAgIGVycm9yID0gbWljcm9j b2RlX3VwZGF0ZV9jcHUoaW5mby0+YnVmZmVyLCBpbmZvLT5idWZmZXJfc2l6ZSk7Cj4gKyAgICBp ZiAoIGVycm9yICYmICFyZXQgKQo+ICsgICAgICAgIHJldCA9IGVycm9yOwo+ICsgICAgLyoKPiAr ICAgICAqIEluY3JlYXNlIHRoZSB3YWl0IHRpbWVvdXQgdG8gYSBzYWZlIHZhbHVlIGhlcmUgc2lu Y2Ugd2UncmUgc2VyaWFsaXppbmcKPiArICAgICAqIHRoZSBtaWNyb2NvZGUgdXBkYXRlIGFuZCB0 aGF0IGNvdWxkIHRha2UgYSB3aGlsZSBvbiBhIGxhcmdlIG51bWJlciBvZgo+ICsgICAgICogQ1BV cy4gQW5kIHRoYXQgaXMgZmluZSBhcyB0aGUgKmFjdHVhbCogdGltZW91dCB3aWxsIGJlIGRldGVy bWluZWQgYnkKPiArICAgICAqIHRoZSBsYXN0IENQVSBmaW5pc2hlZCB1cGRhdGluZyBhbmQgdGh1 cyBjdXQgc2hvcnQKPiArICAgICAqLwo+ICsgICAgZXJyb3IgPSBfX3dhaXRfZm9yX2NwdXMoJmlu Zm8tPmNwdV9vdXQsIFVTRUNfUEVSX1NFQyAqIG51bV9vbmxpbmVfY3B1cygpKTsKCkFuZCB0aGlz IG9uZSdzIGV2ZW4gd29yc2UsIGluIHBhcnRpY3VsYXIgb24gaHVnZSBzeXN0ZW1zLiBJJ20gYWZy YWlkIHN1Y2ggYSBsb25nCnBlcmlvZCBvZiB0aW1lIGluIHN0b3AtbWFjaGluZSBjb250ZXh0IGlz IGdvaW5nIHRvIGNvbmZ1c2UgbW9zdCBvZiB0aGUgcnVubmluZwpkb21haW5zIChpbmNsdWRpbmcg RG9tMCkuIFRoZXJlJ3Mgbm90aGluZyBpbmhlcmVudGx5IHdyb25nIHdpdGggZS5nLiBwcm9jZXNz aW5nCnRoZSB1cGRhdGVzIG9uIGRpc3RpbmN0IGNvcmVzIChhbmQgZXZlbiBtb3JlIHNvIG9uIGRp c3RpbmN0IHNvY2tldHMpIGluIHBhcmFsbGVsLgpUaGVyZWZvcmUgcmV2aXNpbmcgdGhlIGxvY2tp bmcgaW4gbWljcm9jb2RlX3VwZGF0ZV9jcHUoKSBtaWdodCBiZSBhIG5lY2Vzc2FyeQpwcmVyZXEg c3RlcC4gT3IgYWx0ZXJuYXRpdmVseSB5b3UgbWF5IG5lZWQgdG8gZGVtYW5kIHRoYXQgbm8gb3Ro ZXIgcnVubmluZwpkb21haW5zIGV4aXN0IGJlc2lkZXMgRG9tMCAoYW5kIGhvcGUgdGhlIGJlc3Qg Zm9yIERvbTAgaXRzZWxmKS4KCkkgYWxzbyBkb24ndCB0aGluayB0aGVyZSdzIGFueSBwb2ludCBp bnZva2luZyB0aGUgb3BlcmF0aW9uIG9uIGFsbCBIVCB0aHJlYWRzIG9uIGEKY29yZSwgYnV0IEkg cmVhbGl6ZSBzdG9wX21hY2hpbmVfcnVuKCkgaXNuJ3QgZmxleGlibGUgZW5vdWdoIHRvIGFsbG93 IHN1Y2guCgpKYW4KCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5v cmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZl bA==