From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 22/27] x86/cpuid: Perform max_leaf calculations in guest_cpuid() Date: Thu, 5 Jan 2017 14:28:47 +0000 Message-ID: References: <1483533584-8015-1-git-send-email-andrew.cooper3@citrix.com> <1483533584-8015-23-git-send-email-andrew.cooper3@citrix.com> <586E5D69020000780012D6A2@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: <586E5D69020000780012D6A2@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: Xen-devel List-Id: xen-devel@lists.xenproject.org T24gMDUvMDEvMTcgMTM6NTEsIEphbiBCZXVsaWNoIHdyb3RlOgo+Cj4+IEBAIC0zMzMsMjEgKzM0 MCw1MCBAQCB2b2lkIGd1ZXN0X2NwdWlkKGNvbnN0IHN0cnVjdCB2Y3B1ICp2LCB1bnNpZ25lZCBp bnQgbGVhZiwKPj4gICAgICAgICAgICAgICAgICAgdW5zaWduZWQgaW50IHN1YmxlYWYsIHN0cnVj dCBjcHVpZF9sZWFmICpyZXMpCj4+ICB7Cj4+ICAgICAgY29uc3Qgc3RydWN0IGRvbWFpbiAqZCA9 IHYtPmRvbWFpbjsKPj4gKyAgICBjb25zdCBzdHJ1Y3QgY3B1aWRfcG9saWN5ICpwID0gZC0+YXJj aC5jcHVpZDsKPj4gIAo+PiAgICAgICpyZXMgPSBFTVBUWV9MRUFGOwo+PiAgCj4+ICAgICAgLyoK Pj4gICAgICAgKiBGaXJzdCBwYXNzOgo+PiAgICAgICAqIC0gRGlzcGF0Y2ggdGhlIHZpcnR1YWxp c2VkIGxlYXZlcyB0byB0aGVpciByZXNwZWN0aXZlIGhhbmRsZXJzLgo+PiArICAgICAqIC0gUGVy Zm9ybSBtYXhfbGVhZi9zdWJsZWFmIGNhbGN1bGF0aW9ucywgbWF5YmUgcmV0dXJuaW5nIGVhcmx5 Lgo+PiAgICAgICAqLwo+PiAgICAgIHN3aXRjaCAoIGxlYWYgKQo+PiAgICAgIHsKPj4gKyAgICBj YXNlIDB4MCAuLi4gMHg2Ogo+PiArICAgIGNhc2UgMHg4IC4uLiAweGM6Cj4+ICsjaWYgMCAvKiBG b3Igd2hlbiBDUFVJRF9HVUVTVF9OUl9CQVNJQyBpc24ndCAweGQgKi8KPj4gKyAgICBjYXNlIDB4 ZSAuLi4gQ1BVSURfR1VFU1RfTlJfQkFTSUMgLSAxOgo+PiArI2VuZGlmCj4gUGVyaGFwcyBoYXZl IGEgQlVJTERfQlVHX09OKCkgaW4gYW4gI2Vsc2UgaGVyZT8KClRoZSBwcmVzZW5jZSBvZiB0aGlz IHdhcyB0byBiZSBhIHJlbWluZGVyIHRvIHdob21ldmVyIHRyaWVzIHVwcGluZwptYXhfbGVhZiBi ZXlvbmQgMHhkLiAgVGhlbiBhZ2FpbiwgdGhlcmUgaXMgYSByZWFzb25hYmxlIGNoYW5jZSBpdCB3 aWxsCmJlIG1lLgoKSSBhbSBoYWxmIHRlbXB0ZWQgdG8gbGVhdmUgaXQgb3V0LgoKPgo+PiArICAg ICAgICBpZiAoIGxlYWYgPiBwLT5iYXNpYy5tYXhfbGVhZiApCj4+ICsgICAgICAgICAgICByZXR1 cm47Cj4+ICsgICAgICAgIGJyZWFrOwo+PiArCj4+ICsgICAgY2FzZSAweDc6Cj4+ICsgICAgICAg IGlmICggc3VibGVhZiA+IHAtPmZlYXQubWF4X3N1YmxlYWYgKQo+PiArICAgICAgICAgICAgcmV0 dXJuOwo+PiArICAgICAgICBicmVhazsKPj4gKwo+PiArICAgIGNhc2UgMHhkOgo+IFhTVEFURV9D UFVJRCBhZ2FpbiwKCkkgY29uc2lkZXJlZCB0aGlzLCBidXQgaGF2aW5nIGEgbWl4IG9mIG5hbWVk IGFuIG51bWJlcmVkIGxlYXZlcyBpcyB3b3JzZQp0aGFuIGhhdmluZyB0aGVtIHVuaWZvcm1seSBu dW1iZXJlZCwgZXNwZWNpYWxseSB3aGVuIHZpc3VhbGx5IGNoZWNraW5nCnRoZSBjb25kaXRpb25z IGFyb3VuZCB0aGUgI2lmIDAgY2FzZSBhYm92ZS4KCkkgaGFkIGNvbnNpZGVyZWQgbWFraW5nIGEg Y3B1aWQtaW5kZXguaCBmb3IgbGVhZiBuYW1lcywgYnV0IG1vc3QgbGVhdmVzCmFyZSBtb3JlIGNv bW1vbmx5IHJlZmVycmVkIHRvIGJ5IG51bWJlciB0aGFuIG5hbWUsIHNvIEkgYW0gcmVhbGx5IG5v dApzdXJlIGlmIHRoYXQgd291bGQgYmUgaGVscGZ1bCBvciBoaW5kZXJpbmcgaW4gdGhlIGxvbmcg cnVuLgoKPiB3aGljaCByYWlzZXMgdGhlIHF1ZXN0aW9uIHdoZXRoZXIgc3dpdGNoKCkgcmVhbGx5 IGlzIHRoZSBiZXN0IHdheSB0byBkZWFsIHdpdGggdGhpbmdzIGhlcmUuCgpXaGF0IGVsc2Ugd291 bGQgeW91IHN1Z2dlc3Q/ICBPbmUgd2F5IG9yIGFub3RoZXIgKGJldHRlciBzaG93biBpbiB0aGUK Y29udGV4dCBvZiB0aGUgZm9sbG93aW5nIHBhdGNoKSwgd2UgbmVlZCBvbmUgYmxvY2sgcGVyIHVu aW9ue30gdG8gYXBwbHkKbWF4X2xlYWYgY2FsY3VsYXRpb25zIGFuZCByZWFkIHRoZSBiYXNlIGRh dGEgZnJvbSBwLT4kRk9PLnJhd1skSURYXS4KCj4KPj4gLS0tIGEveGVuL2FyY2gveDg2L2h2bS9o dm0uYwo+PiArKysgYi94ZW4vYXJjaC94ODYvaHZtL2h2bS5jCj4+IEBAIC0zMzA1LDI3ICszMzA1 LDYgQEAgdm9pZCBodm1fY3B1aWQodW5zaWduZWQgaW50IGlucHV0LCB1bnNpZ25lZCBpbnQgKmVh eCwgdW5zaWduZWQgaW50ICplYngsCj4+ICAgICAgaWYgKCAhZWR4ICkKPj4gICAgICAgICAgZWR4 ID0gJmR1bW15Owo+PiAgCj4+IC0gICAgaWYgKCBpbnB1dCAmIDB4N2ZmZmZmZmYgKQo+PiAtICAg IHsKPj4gLSAgICAgICAgLyoKPj4gLSAgICAgICAgICogUmVxdWVzdHMgb3V0c2lkZSB0aGUgc3Vw cG9ydGVkIGxlYWYgcmFuZ2VzIHJldHVybiB6ZXJvIG9uIEFNRAo+PiAtICAgICAgICAgKiBhbmQg dGhlIGhpZ2hlc3QgYmFzaWMgbGVhZiBvdXRwdXQgb24gSW50ZWwuIFVuaWZvcm1seSBmb2xsb3cK Pj4gLSAgICAgICAgICogdGhlIEFNRCBtb2RlbCBhcyB0aGUgbW9yZSBzYW5lIG9uZS4KPj4gLSAg ICAgICAgICovCj4gSSB0aGluayB0aGlzIGNvbW1lbnQgd291bGQgYmV0dGVyIGJlIG1vdmVkIGlu c3RlYWQgb2YgZGVsZXRlZC4KCldoZXJlIHdvdWxkIHlvdSBsaWtlIGl0PyAgSXQgZG9lc24ndCBo YXZlIGFuIGVhc3kgbG9naWNhbCBwbGFjZSB0byBsaXZlCmluIGd1ZXN0X2NwdWlkKCkuICBUaGUg YmVzdCBJIGNhbiB0aGluayBvZiBpcyBwcm9iYWJseSBhcyBhbiBleHRlbnNpb24Kb2YgdGhlICJG aXJzdCBQYXNzIiBjb21tZW50LgoKfkFuZHJldwoKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlz dHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==