From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 08/15] xen: x86: add SGX cpuid handling support. Date: Fri, 14 Jul 2017 09:37:04 +0200 Message-ID: <4b2bae7e-a016-af0b-aae6-a030fa6c3619@citrix.com> References: <1ca2e437e21b0684518ff32dad292aa6080dcb11.1499586046.git.kai.huang@linux.intel.com> <7519e471-7fd5-748d-2191-31f9a486f81d@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <7519e471-7fd5-748d-2191-31f9a486f81d@linux.intel.com> Content-Language: en-GB List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: "Huang, Kai" , Kai Huang , xen-devel@lists.xen.org Cc: jbeulich@suse.com List-Id: xen-devel@lists.xenproject.org T24gMTMvMDcvMTcgMDc6NDIsIEh1YW5nLCBLYWkgd3JvdGU6Cj4gT24gNy8xMi8yMDE3IDEwOjU2 IFBNLCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+PiBPbiAwOS8wNy8xNyAxMDoxMCwgS2FpIEh1YW5n IHdyb3RlOgo+Pgo+PiBXaHkgZG8gd2UgbmVlZCB0aGlzIGhpZGVfZXBjIHBhcmFtZXRlcj8gIElm IHdlIGFyZW4ndCBwcm92aWRpbmcgYW55IAo+PiBlcGMgcmVzb3VyY2UgdG8gdGhlIGd1ZXN0LCB0 aGUgZW50aXJlIHNneCB1bmlvbiBzaG91bGQgYmUgemVybyBhbmQgCj4+IHRoZSBTR1ggZmVhdHVy ZSBiaXQgc2hvdWxkIGJlIGhpZGRlbi4KPgo+IE15IGludGVudGlvbiB3YXMgdG8gaGlkZSBwaHlz aWNhbCBFUEMgaW5mbyBmb3IgcHZfbWF4X3BvbGljeSBhbmQgCj4gaHZtX21heF9wb2xpY3kgKHJl Y2FsY3VsYXRlX3NneCBpcyBhbHNvIGNhbGxlZCBieSAKPiBjYWxjdWxhdGVfcHZfbWF4X3BvbGlj eSBhbmQgY2FsY3VsYXRlX2h2bV9tYXhfcG9saWN5KSwgYXMgdGhleSBhcmUgZm9yIAo+IGd1ZXN0 IGFuZCBkb24ndCBuZWVkIHBoeXNpY2FsIEVQQyBpbmZvLiBCdXQga2VlcGluZyBwaHlzaWNhbCBF UEMgaW5mbyAKPiBpbiB0aGVtIGRvZXMgbm8gaGFybSBzbyBJIHRoaW5rIHdlIGNhbiBzaW1wbHkg cmVtb3ZlIGhpZGVfZXBjLgoKSXQgaXMgbXkgZXhwZXJpZW5jZSB0aGF0IHByb3ZpZGluZyBoYWxm IHRoZSBpbmZvcm1hdGlvbiBpcyB3b3JzZSB0aGFuIApwcm92aWRpbmcgbm9uZSBvciBhbGwgb2Yg aXQsIGJlY2F1c2UgZGV2ZWxvcGVycyBhcmUgbm90b3Jpb3VzIGZvciB0YWtpbmcgCnNob3J0Y3V0 cyB3aGVuIGxvb2tpbmcgZm9yIGZlYXR1cmVzLgoKUGF0Y2ggMSBtZWFucyB0aGF0IGEgUFYgZ3Vl c3Qgd2lsbCBuZXZlciBoYXZlIHAtPmZlYXQuc2d4IHNldC4gClRoZXJlZm9yZSwgd2Ugd2lsbCBo aXQgdGhlIG1lbXNldCgpIGJlbG93LCBhbmQgemVybyB0aGUgd2hvbGUgb2YgdGhlIFNHWCAKdW5p b24uCgo+Cj4gSU1PIHdlIGNhbm5vdCBjaGVjayB3aGV0aGVyIEVQQyBpcyB2YWxpZCBhbmQgemVy byBzZ3ggdW5pb24gaW4gCj4gcmVjYWxjdWxhdGVfc2d4LCBhcyBpdCBpcyBjYWxsZWQgZm9yIGVh Y2ggQ1BVSUQuIEZvciBleGFtcGxlLCBpdCBpcyAKPiBjYWxsZWQgZm9yIFNHWCBzdWJsZWFmIDAs IGFuZCAxLCBhbmQgdGhlbiAyLCBhbmQgd2hlbiBzdWJsZWFmIDAgYW5kIDEgCj4gYXJlIGNhbGxl ZCwgdGhlIEVQQyByZXNvdXJjZSBpcyAwIChoYXNuJ3QgYmVlbiBjb25maWd1cmVkKS4KCnJlY2Fs Y3VsYXRlXyooKSBvbmx5IGdldCBjYWxsZWQgd2hlbiB0aGUgdG9vbHN0YWNrIG1ha2VzIHVwZGF0 ZXMgdG8gdGhlIApwb2xpY3kuICBJdCBpcyBhbiB1bmZvcnR1bmF0ZSBzaWRlIGVmZmVjdCBvZiB0 aGUgY3VycmVudCBpbXBsZW1lbnRhdGlvbiwgCmJ1dCB3aWxsIGJlIGdvaW5nIGF3YXkgd2l0aCBt eSBDUFVJRCB3b3JrLgoKVGhlIGludGVuZGVkIGZsb3cgd2lsbCBiZSB0aGlzOgoKQXQgWGVuIGJv b3Q6CiogQ2FsY3VsYXRlcyB0aGUgcmF3LCBob3N0IGFuZCBtYXggcG9saWNpZXMgKGFzIHdlIGRv IHRvZGF5KQoKQXQgZG9tYWluIGNyZWF0ZToKKiBBcHByb3ByaWF0ZSBwb2xpY3kgZ2V0cyBjb3Bp ZWQgdG8gbWFrZSB0aGUgZGVmYXVsdCBkb21haW4gcG9saWN5LgoqIFRvb2xzdGFjayBnZXRzIHRo ZSB3aG9sZSBwb2xpY3kgYXQgb25lIHdpdGggYSBuZXcgCkRPTUNUTF9nZXRfY3B1aWRfcG9saWN5 IGh5cGVyY2FsbC4KKiBUb29sc3RhY2sgbWFrZXMgYWxsIGFkanVzdG1lbnRzIChsb2NhbGx5KSB0 aGF0IGl0IHdhbnRzIHRvLCBiYXNlZCBvbiAKY29uZmlndXJhdGlvbiwgZXRjLgoqIFRvb2xzdGFj ayBtYWtlcyBhIHNpbmdsZSBET01DVExfc2V0X2NwdWlkX3BvbGljeSBoeXBlcmNhbGwuCiogWGVu IGF1ZGl0cyB0aGUgbmV3IHBvbGljeSBwcm9wb3NlZCBieSB0aGUgdG9vbHN0YWNrLCByZXN1bHRp bmcgaW4gYSAKc2luZ2xlIHllcy9ubyBkZWNpc2lvbi4KKiogSWYgbm90LCB0aGUgdG9vbHN0YWNr IGlzIHRvbGQgdG8gdHJ5IGFnYWluLiAgVGhpcyB3aWxsIGxpa2VseSByZXN1bHQgCmluIHhsIGFz a2luZyB0aGUgdXNlciB0byBtb2RpZnkgdGhlaXIgLmNmZyBmaWxlLgoqKiBJZiB5ZXMsIHRoZSBw cm9wb3NlZCBwb2xpY3kgYmVjb21lcyB0aGUgYWN0dWFsIHBvbGljeS4KClRoaXMgc2NoZW1lIHdp bGwgZml4IHRoZSBjdXJyZW50IHByb2JsZW0gd2UgaGF2ZSB3aGVyZSB0aGUgdG9vbHN0YWNrIApi bGluZGx5IHByb3Bvc2VzIGNoYW5nZXMgKG9uZSBsZWFmIGF0IGEgdGltZSksIGFuZCBYZW4gaGFz IHRvIHplcm8gdGhlIApiaXRzIGl0IGRvZXNuJ3QgbGlrZSAoYmVjYXVzZSB0aGUgdG9vbHN0YWNr IGhhcyBuZXZlciB0cmFkaXRpb25hbGx5IApjaGVja2VkIHRoZSByZXR1cm4gdmFsdWUgb2YgdGhl IGh5cGVyY2FsbCA6KCApCgo+Cj4KPj4KPj4+ICsKPj4+ICsgICAgICAgICAgICAvKiBTdWJsZWFm IDIuICovCj4+PiArICAgICAgICAgICAgdWludDMyX3QgYmFzZV92YWxpZDoxLCA6MTEsIGJhc2Vf cGZuX2xvdzoyMDsKPj4+ICsgICAgICAgICAgICB1aW50MzJfdCBiYXNlX3Bmbl9oaWdoOjIwLCA6 MTI7Cj4+PiArICAgICAgICAgICAgdWludDMyX3Qgc2l6ZV92YWxpZDoxLCA6MTEsIG5wYWdlc19s b3c6MjA7Cj4+PiArICAgICAgICAgICAgdWludDMyX3QgbnBhZ2VzX2hpZ2g6MjAsIDoxMjsKPj4+ ICsgICAgICAgIH07Cj4+Cj4+IEFyZSB0aGUge2Jhc2Usc2l6ZX1fdmFsaWQgZmllbGRzIGNvcnJl Y3Q/ICBUaGUgbWFudWFsIHNheXMgdGhlIGFyZSAKPj4gNC1iaXQgZmllbGRzIHJhdGhlciB0aGFu IHNpbmdsZSBiaXQgZmllbGRzLgo+Cj4gVGhleSBhcmUgNCBiaXRzIGluIFNETSBidXQgYWN0dWFs bHkgY3VycmVudGx5IG9ubHkgYml0IDEgaXMgdmFsaWQgCj4gKG90aGVyIHZhbHVlcyBhcmUgcmVz ZXJ2ZWQpLiBJIHRoaW5rIGZvciBub3cgYm9vbCBiYXNlX3ZhbGlkIHNob3VsZCBiZSAKPiBlbm91 Z2guIFdlIGNhbiBleHRlbmQgd2hlbiBuZXcgdmFsdWVzIGNvbWUgb3V0LiBXaGF0J3MgeW91ciBz dWdnZXN0aW9uPwoKT2suICBUaGF0IGNhbiB3b3JrIGZvciBub3cuCgo+Cj4+Cj4+IEkgd291bGQg YWxzbyBkcm9wIHRoZSBfcGZuIGZyb20gdGhlIGJhc2UgbmFtZXMuICBUaGUgZmllbGRzIHN0aWxs IAo+PiBuZWVkIHNoaWZ0aW5nIHRvIGdldCBhIHNlbnNpYmxlIHZhbHVlLgo+Cj4gT0suIFdpbGwg ZG8uCgpBcyBhIGZ1cnRoZXIgdGhvdWdodCwgd2hhdCBhYm91dCB1aW50NjRfdCBiYXNlOjQwIGFu ZCBzaXplOjQwPyAgVGhhdCAKd291bGQgcmVkdWNlIHRoZSBjb21wbGV4aXR5IG9mIGNhbGN1bGF0 aW5nIHRoZSB2YWx1ZXMuCgp+QW5kcmV3CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54 ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK