From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 2/2] x86/HVM: don't calculate XSTATE area sizes in software Date: Wed, 1 Jun 2016 16:35:44 +0100 Message-ID: <574F00D0.20708@citrix.com> References: <574F13FB02000078000F07D9@prv-mh.provo.novell.com> <574F161802000078000F07FD@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b88Gg-0001tN-8t for xen-devel@lists.xenproject.org; Wed, 01 Jun 2016 15:41:14 +0000 In-Reply-To: <574F161802000078000F07FD@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 , xen-devel Cc: Wei Liu List-Id: xen-devel@lists.xenproject.org T24gMDEvMDYvMTYgMTY6MDYsIEphbiBCZXVsaWNoIHdyb3RlOgo+IEBAIC0zNDQwLDQyICszNDQw LDI0IEBAIHZvaWQgaHZtX2NwdWlkKHVuc2lnbmVkIGludCBpbnB1dCwgdW5zaWcKPiAgICAgICAg ICAgICAgKmVheCA9ICplYnggPSAqZWN4ID0gKmVkeCA9IDA7Cj4gICAgICAgICAgICAgIGJyZWFr Owo+ICAgICAgICAgIH0KPiAtICAgICAgICAvKiBFQlggdmFsdWUgb2YgbWFpbiBsZWFmIDAgZGVw ZW5kcyBvbiBlbmFibGVkIHhzYXZlIGZlYXR1cmVzICovCj4gLSAgICAgICAgaWYgKCBjb3VudCA9 PSAwICYmIHYtPmFyY2gueGNyMCApIAo+IC0gICAgICAgIHsKPiAtICAgICAgICAgICAgLyogcmVz ZXQgRUJYIHRvIGRlZmF1bHQgdmFsdWUgZmlyc3QgKi8KPiAtICAgICAgICAgICAgKmVieCA9IFhT VEFURV9BUkVBX01JTl9TSVpFOyAKPiAtICAgICAgICAgICAgZm9yICggc3ViX2xlYWYgPSAyOyBz dWJfbGVhZiA8IDYzOyBzdWJfbGVhZisrICkKPiAtICAgICAgICAgICAgewo+IC0gICAgICAgICAg ICAgICAgaWYgKCAhKHYtPmFyY2gueGNyMCAmICgxVUxMIDw8IHN1Yl9sZWFmKSkgKQo+IC0gICAg ICAgICAgICAgICAgICAgIGNvbnRpbnVlOwo+IC0gICAgICAgICAgICAgICAgZG9tYWluX2NwdWlk KGQsIGlucHV0LCBzdWJfbGVhZiwgJl9lYXgsICZfZWJ4LCAmX2VjeCwgCj4gLSAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgJl9lZHgpOwo+IC0gICAgICAgICAgICAgICAgaWYgKCAoX2VheCAr IF9lYngpID4gKmVieCApCj4gLSAgICAgICAgICAgICAgICAgICAgKmVieCA9IF9lYXggKyBfZWJ4 Owo+IC0gICAgICAgICAgICB9Cj4gLSAgICAgICAgfQo+IC0KPiAtICAgICAgICBpZiAoIGNvdW50 ID09IDEgKQo+ICsgICAgICAgIHN3aXRjaCAoIGNvdW50ICkKPiAgICAgICAgICB7Cj4gKyAgICAg ICAgY2FzZSAxOgo+ICAgICAgICAgICAgICAqZWF4ICY9IGh2bV9mZWF0dXJlc2V0W0ZFQVRVUkVT RVRfRGExXTsKPiAtCj4gLSAgICAgICAgICAgIGlmICggKmVheCAmIGNwdWZlYXRfbWFzayhYODZf RkVBVFVSRV9YU0FWRVMpICkKPiArICAgICAgICAgICAgaWYgKCAhKCplYXggJiBjcHVmZWF0X21h c2soWDg2X0ZFQVRVUkVfWFNBVkVTKSkgKQo+ICAgICAgICAgICAgICB7Cj4gLSAgICAgICAgICAg ICAgICB1aW50NjRfdCB4ZmVhdHVyZXMgPSB2LT5hcmNoLnhjcjAgfCB2LT5hcmNoLmh2bV92Y3B1 Lm1zcl94c3M7Cj4gLQo+IC0gICAgICAgICAgICAgICAgKmVieCA9IFhTVEFURV9BUkVBX01JTl9T SVpFOwo+IC0gICAgICAgICAgICAgICAgaWYgKCB4ZmVhdHVyZXMgJiB+WFNUQVRFX0ZQX1NTRSAp Cj4gLSAgICAgICAgICAgICAgICAgICAgZm9yICggc3ViX2xlYWYgPSAyOyBzdWJfbGVhZiA8IDYz OyBzdWJfbGVhZisrICkKPiAtICAgICAgICAgICAgICAgICAgICAgICAgaWYgKCB4ZmVhdHVyZXMg JiAoMVVMTCA8PCBzdWJfbGVhZikgKQo+IC0gICAgICAgICAgICAgICAgICAgICAgICB7Cj4gLSAg ICAgICAgICAgICAgICAgICAgICAgICAgICBpZiAoIHRlc3RfYml0KHN1Yl9sZWFmLCAmeHN0YXRl X2FsaWduKSApCj4gLSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgKmVieCA9IFJPVU5E VVAoKmVieCwgNjQpOwo+IC0gICAgICAgICAgICAgICAgICAgICAgICAgICAgKmVieCArPSB4c3Rh dGVfc2l6ZXNbc3ViX2xlYWZdOwo+IC0gICAgICAgICAgICAgICAgICAgICAgICB9Cj4gLSAgICAg ICAgICAgIH0KPiAtICAgICAgICAgICAgZWxzZQo+ICAgICAgICAgICAgICAgICAgKmVieCA9ICpl Y3ggPSAqZWR4ID0gMDsKPiArICAgICAgICAgICAgICAgIGJyZWFrOwo+ICsgICAgICAgICAgICB9 Cj4gKyAgICAgICAgICAgIC8qIGZhbGwgdGhyb3VnaCAqLwo+ICsgICAgICAgIGNhc2UgMDoKPiAr ICAgICAgICAgICAgLyoKPiArICAgICAgICAgICAgICogQWx3YXlzIHJlYWQgQ1BVSUQuMHhEW0VD WD0wLzFdLkVCWCBmcm9tIGhhcmR3YXJlLCByYXRoZXIgdGhhbgo+ICsgICAgICAgICAgICAgKiBk b21haW4gcG9saWN5LiAgSXQgdmFyaWVzIHdpdGggZW5hYmxlZCB4c3RhdGUsIGFuZCB0aGUgY29y cmVjdAo+ICsgICAgICAgICAgICAgKiB4Y3IwL3hzcyBhcmUgaW4gY29udGV4dC4KPiArICAgICAg ICAgICAgICovCj4gKyAgICAgICAgICAgIGNwdWlkX2NvdW50KGlucHV0LCBjb3VudCwgJmR1bW15 LCBlYngsICZkdW1teSwgJmR1bW15KTsKPiArICAgICAgICAgICAgYnJlYWs7CgpJdCB3b3VsZCBi ZSBoZWxwZnVsIGZvciBteSBQS1UgYnVnZml4IGlmIHlvdSBjb3VsZCBhdm9pZCBjb2xsYXBzaW5n IHRoaXMKaW50byBhIGZhbGx0aG91Z2gsIGFzIHRoZSBmYWxsdGhvdWdoIHdvdWxkIG5lZWQgdG8g YmUgdW5kb25lLiAKT3RoZXJ3aXNlLCBSZXZpZXdlZC1ieTogQW5kcmV3IENvb3BlciA8YW5kcmV3 LmNvb3BlcjNAY2l0cml4LmNvbT4KCn5BbmRyZXcKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxp c3RzLnhlbi5vcmcKaHR0cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==