From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH v2 2/2] x86/Intel: virtualize support for cpuid faulting Date: Mon, 17 Oct 2016 13:34:25 +0100 Message-ID: References: <20161013210927.4629-1-khuey@kylehuey.com> <20161013210927.4629-3-khuey@kylehuey.com> <5800E5E7020000780011767E@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Kyle Huey Cc: Robert O'Callahan , Kevin Tian , Jun Nakajima , Jan Beulich , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gMTQvMTAvMTYgMjA6MzYsIEt5bGUgSHVleSB3cm90ZToKPiBPbiBGcmksIE9jdCAxNCwgMjAx NiBhdCAxMDoxOCBBTSwgQW5kcmV3IENvb3Blcgo+IDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29t PiB3cm90ZToKPj4gT24gYSBzbGlnaHRseSBzZXBhcmF0ZSBub3RlLCBhcyB5b3UgaGF2ZSBqdXN0 IGJlZW4gYSBzdWNjZXNzZnVsCj4+IGd1aW5lYS1waWcgZm9yIFhURiwgaG93IGRpZCB5b3UgZmlu ZCBpdD8gIEl0IGlzIGEgdmVyeSBuZXcgKHN0aWxsCj4+IHNvbWV3aGF0IGluIGRldmVsb3BtZW50 KSBzeXN0ZW0gYnV0IHRoZSBwcm9qZWN0IGlzIGxvb2tpbmcgdG8gdHJ5IGFuZAo+PiBpbXByb3Zl IHJlZ3Jlc3Npb24gdGVzdGluZyBpbiB0aGlzIHdheSwgZXNwZWNpYWxseSBmb3IgbmV3IGZlYXR1 cmVzLiAgSQo+PiB3ZWxjb21lIGFueSBmZWVkYmFjay4KCkZXSVcsIEkgaGF2ZSBqdXN0IGRvbmUg c29tZSBsaWJyYXJ5IGltcHJvdmVtZW50cyBhbmQgcmViYXNlZCB0aGUgdGVzdC4KCj4gSXQncyBw cmV0dHkgc2xpY2suICBNdWNoIGJldHRlciB0aGFuIHdoYXQgTGludXggaGFzIDspCj4KPiBJIGRv IHRoaW5rIGl0J3MgYSBiaXQgY29uZnVzaW5nIHRoYXQgeHRmX2hhc19mZXAgaXMgZmFsc2Ugb24g UFYgZ3Vlc3RzLgoKTm93IHlvdSBwb2ludCBpdCBvdXQsIEkgY2FuIHNlZSBob3cgaXQgd291bGQg YmUgY29uZnVzaW5nLiAgVGhpcyBpcyBkdWUKdG8gdGhlIGhpc3Rvcnkgb2YgRkVQLgoKVGhlIHNl cXVlbmNlIGB1ZDI7IC5hc2NpaSAneGVuJzsgY3B1aWRgIGhhcyBiZWVuIGFyb3VuZCBhZ2VzIChp dApwcmVkYXRlcyBmYXVsdGluZyBhbmQgaGFyZHdhcmUgd2l0aCBtYXNrL292ZXJyaWRlIE1TUnMp LCBhbmQgaXMgdXNlZCBieQpQViBndWVzdHMgdG8gc3BlY2lmaWNhbGx5IHJlcXVlc3QgWGVuJ3Mg Q1BVSUQgaW5mb3JtYXRpb24sIHJhdGhlciB0aGFuCmdldHRpbmcgdGhlIHJlYWwgaGFyZHdhcmUg aW5mb3JtYXRpb24uCgpUaGVyZSBpcyBhbHNvIGFuIHJkdHNjcCB2YXJpYW50IGZvciBQViBndWVz dHMsIHVzZWQgZm9yIHZpcnR1YWwgVFNDIG1vZGVzLgoKSW4gWGVuIDQuNSwgSSBpbnRyb2R1Y2Vk IHRoZSBzYW1lIHByZWZpeCB0byBIVk0gZ3Vlc3RzLCBidXQgZm9yCmFyYml0cmFyeSBpbnN0cnVj dGlvbnMuICBUaGlzIHdhcyBmb3IgdGhlIGV4cHJlc3MgcHVycG9zZSBvZiB0ZXN0aW5nIHRoZQp4 ODYgaW5zdHJ1Y3Rpb24gZW11bGF0b3IuCgpBcyBhIHJlc3VsdCwgQ1BVSUQgaW4gUFYgZ3Vlc3Rz IGlzIHRoZSBvZGQgY2FzZSBvdXQuCgo+Cj4gSXQgbWlnaHQgYWxzbyBiZSBuaWNlIHRvIChhdCBs ZWFzdCBvcHRpb25hbGx5KSBoYXZlIHh0Zl9hc3NlcnQoY29uZCwKPiBtZXNzYWdlKSBzbyBpbnN0 ZWFkIG9mCj4KPiBpZiAoIGNvbmQgKQo+ICAgICB4dGZfZmFpbHVyZShtZXNzYWdlKTsKPgo+IHlv dSBjYW4gd3JpdGUKPgo+IHh0Zl9hc3NlcnQoIWNvbmQsIG1lc3NhZ2UpOwo+Cj4gQSBib251cyBv ZiBkb2luZyB0aGlzIGlzIHRoYXQgdGhlIGZyYW1ld29yayBjb3VsZCBhY3R1YWxseSBjb3VudCBo b3cKPiBtYW55IGNoZWNrcyB3ZXJlIHJ1bi4gIFNvIGZvciB0aGUgSFZNIHRlc3RzICh3aGljaCBk b24ndCBydW4gdGhlIEZFUAo+IGJpdHMpIGluc3RlYWQgb2YgZ2V0dGluZyAiVGVzdCByZXN1bHQ6 IFNLSVAiIHlvdSBjb3VsZCBzYXkgIlRlc3QKPiByZXN1bHQ6IDkgUEFTUyAxIFNLSVAiIG9yIHNv bWV0aGluZyBzaW1pbGFyLgoKQm9vdCB3aXRoICJodm1fZmVwIiBvbiB0aGUgY29tbWFuZCBsaW5l IGFuZCB0aGUgdGVzdHMgc2hvdWxkIGVuZCB1cApyZXBvcnRpbmcgc3VjY2Vzcy4KCkl0IGlzIGEg ZGVsaWJlcmF0ZSBkZXNpZ24gY2hvaWNlIHRvIGhhdmUgYSBzaW5nbGUgcmVzdWx0IGZyb20gYSBz aW5nbGUKcnVuIG9mIHRoZSB0ZXN0IGtlcm5lbCwgYW5kIGlzIGEgZGVzaWduIGluaGVyaXRlZCBm cm9tIFhlblNlcnZlcidzCmludGVybmFsIHRlc3Rpbmcgc3lzdGVtICh3aGljaCBydW5zIH4xMGsg bWFjaGluZSBob3VycyBvZiB0ZXN0aW5nIGV2ZXJ5CnNpbmdsZSBkYXkpLgoKRHVyaW5nIGRldmVs b3BtZW50LCBJIGNhbiBzZWUgdGhlIGF0dHJhY3Rpb24gb2YgaGF2aW5nIGEgdW5pdHRlc3Qgc3R5 bGUKcmVwb3J0LCBidXQgaXQgYmVjb21lcyBjb3VudGVycHJvZHVjdGl2ZSBhdCBsYXJnZXIgc2Nh bGUuICBTdWJkaXZpZGluZwp0aGUgc3BlY2lmaWMgZmFpbHVyZXMgaXMgbm90IGhlbHBmdWwgZm9y IHRoZSBoaWdoIGxldmVsIHZpZXcsIHNvIGlzCm9taXR0ZWQgdG8gc2ltcGx5IHN0YXR1cyByZXBv cnRpbmcuCgpPbmNlIGEgdGVzdCBpcyBkZXZlbG9wZWQgYW5kIHN0YWJsZSwgaXQgc2hvdWxkIGFs d2F5cyBiZSByZXBvcnRpbmcKU1VDQ0VTUzsgYW55dGhpbmcgZWxzZSBpbmRpY2F0ZXMgYW4gaXNz dWUgdG8gYmUgZml4ZWQuICBXaGVuCmludmVzdGlnYXRpbmcgZmFpbHVyZXMsIHRoZSBhY3R1YWwg dGV4dCBvZiB0aGUgZmFpbHVyZSBtZXNzYWdlIGlzIHRoZQppbXBvcnRhbnQgYml0IG9mIGluZm9y bWF0aW9uLgoKfkFuZHJldwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpo dHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==