From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH v2] x86/PV: don't wrongly hide/expose CPUID.OSXSAVE from/to user mode Date: Tue, 23 Aug 2016 10:48:36 +0100 Message-ID: <014a7f99-d7b3-c089-e02b-bdfeea39cf08@citrix.com> References: <57B71D6502000078001076C8@prv-mh.provo.novell.com> <3033b139-3863-d15d-af8f-0849aee9b8a0@citrix.com> <63fe807f-9ecf-efe0-bbde-a21f655a81de@citrix.com> <8f7cf833-9603-decf-6a26-116da477a1ac@citrix.com> <57BC2CD10200007800108303@prv-mh.provo.novell.com> <8241561d-4d23-6426-7b89-4d22cd8b181b@citrix.com> <57BC365802000078001083C9@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.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bc8K1-0000CT-KE for xen-devel@lists.xenproject.org; Tue, 23 Aug 2016 09:48:41 +0000 In-Reply-To: <57BC365802000078001083C9@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 T24gMjMvMDgvMTYgMTA6NDEsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDIzLjA4LjE2IGF0 IDExOjI0LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+IE9uIDIzLzA4LzE2 IDEwOjAwLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+IE9uIDIyLjA4LjE2IGF0IDE5OjMwLCA8 YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+Pj4gT24gMTkvMDgvMTYgMTk6MDcs IEFuZHJldyBDb29wZXIgd3JvdGU6Cj4+Pj4+IE9uIDE5LzA4LzE2IDE4OjA5LCBBbmRyZXcgQ29v cGVyIHdyb3RlOgo+Pj4+Pj4gT24gMTkvMDgvMTYgMTM6NTMsIEphbiBCZXVsaWNoIHdyb3RlOgo+ Pj4+Pj4+IFVzZXIgbW9kZSBjb2RlIGdlbmVyYWxseSBjYW5ub3QgYmUgZXhwZWN0ZWQgdG8gaW52 b2tlIHRoZSBQVi1lbmFibGVkCj4+Pj4+Pj4gQ1BVSUQgWGVuIHN1cHBvcnRzLCBhbmQgcHJpb3Ig dG8gdGhlIENQVUlEIGxldmVsbGluZyBjaGFuZ2VzIGZvciA0LjcKPj4+Pj4+PiAoYXMgd2VsbCBh cyBldmVuIG5vd2FkYXlzIG9uIGxldmVsbGluZyBpbmNhcGFibGUgaGFyZHdhcmUpIHN1Y2ggQ1BV SUQKPj4+Pj4+PiBpbnZvY2F0aW9ucyBhY3R1YWxseSBzYXcgdGhlIGhvc3QgQ1I0Lk9TWFNBVkUg dmFsdWUsIHdoZXJlYXMgcHJpb3IgdG8KPj4+Pj4+PiB0aGlzIHBhdGNoCj4+Pj4+Pj4gLSBvbiBJ bnRlbCBndWVzdCB1c2VyIG1vZGUgYWx3YXlzIHNhdyB0aGUgZmxhZyBjbGVhciwKPj4+Pj4+PiAt IG9uIEFNRCBndWVzdCB1c2VyIG1vZGUgc2F3IHRoZSBmbGFnIHNldCBldmVuIHdoZW4gdGhlIGd1 ZXN0IGtlcm5lbAo+Pj4+Pj4+ICAgZGlkbid0IGVuYWJsZSB1c2Ugb2YgWFNBVkUvWFJTVE9SLgo+ Pj4+Pj4+IEZvbGQgaW4gdGhlIGd1ZXN0IHZpZXcgb2YgQ1I0Lk9TWFNBVkUgd2hlbiBzZXR0aW5n IHRoZSBsZXZlbGxpbmcgTVNScywKPj4+Pj4+PiBqdXN0IGxpa2Ugd2UgZG8gaW4gb3RoZXIgQ1BV SUQgaGFuZGxpbmcuCj4+Pj4+Pj4KPj4+Pj4+PiBUbyBtYWtlIGd1ZXN0IENSNCBjaGFuZ2VzIGlt bWVkaWF0ZWx5IHZpc2libGUgdmlhIENQVUlELCBhbHNvIGludm9rZQo+Pj4+Pj4+IGN0eHRfc3dp dGNoX2xldmVsbGluZygpIGZyb20gdGhlIENSNCB3cml0ZSBwYXRoLgo+Pj4+IEkgd2FzIGp1c3Qg cHV0dGluZyB0b2dldGhlciBhIHBhdGNoIHNlcmllcyB0byBtYWtlIHRoZXNlIGNoYW5nZXMgaW4g YQo+Pj4+IG1vcmUgY29uc2lzdGVudCBtYW5vciwgYW5kIGhhdmUgZm91bmQgYSBzcGFubmVyIGlu IHRoZSB3b3Jrcy4KPj4+Pgo+Pj4+IEhpZGluZyBYZW4ncyB2aWV3IG9mIE9TWFNBVkUgZnJvbSBh IGd1ZXN0cyBuYXRpdmUgY3B1aWQgd2lsbCBicmVhawo+Pj4+IExpbnV4LCBiZWNhdXNlIG9mIHRo ZSBwaWxlIG9mIGhhY2tzIG1ha2luZyB1cCB0aGUgY3VycmVudCBQViBYU0FWRSBzdXBwb3J0Lgo+ Pj4gTm8sIGJlY2F1c2UgUFYgTGludXggZG9lc24ndCB1c2UgbmF0aXZlIENQVUlELiBXZSBjbGVh cmx5IHNob3VsZAo+Pj4gbm90IGhpZGUgT1NYU0FWRSBpbiB0aGUgUFYgdmFyaWFudCAoYW5kIHlv dXIgZWFybGllciBzZXJpZXMgZGlkIHRha2UKPj4+IGdyZWF0IGNhcmUgdG8gYXZvaWQgdGhhdCku Cj4+IFdoZXJlPyBUaGVyZSBpcyBubyBkaXN0aW5jdGlvbiBmb3IgT1NYU0FWRS4KPj4KPj4gVGhl IG9ubHkgcGxhY2UgaW4gcHZfY3B1aWQoKSB3aGljaCBkaXN0aW5ndWlzaGVzIG5hdGl2ZSB2cyBl bXVsYXRlZAo+PiBjcHVpZCBpcyB0aGUgWDg2X0ZFQVRVUkVfTU9OSVRPUiBoYW5kbGluZy4KPj4K Pj4gV2UgZGlzdGluZ3Vpc2gga2VybmVsIGFuZCB1c2Vyc3BhY2UgcXVpdGUgYSBsb3QsIHNvIHRo ZSBjb21wYXRpYmlsaXR5Cj4+IGJyZWFrYWdlcyBhcmUgb25seSB2aXNpYmxlIHRvIHRoZSBrZXJu ZWwuCj4gVGhhdCdzIGFjdHVhbGx5IHRoZSBwYXJ0IEkgbWVhbnQuCgpJIGFtIHNvcnJ5LCBidXQg SSBub3cgaGF2ZSBubyBpZGVhIHdoYXQgeW91IGFyZSByZWZlcnJpbmcgdG8uICBXZSBjYW4ndApy ZWFzb25hYmx5IGRvIGEga2VybmVsL3VzZXJzcGFjZSBzcGxpdCB3aXRoIG1hc2tpbmcsIGJlY2F1 c2Ugd291bGQKYmVjb21lIHN1YnN0YW50aWFsbHkgaGlnaGVyIG92ZXJoZWFkLCBhbmQgWGVuIGlz bid0IG5lY2Vzc2FyaWx5IGludm9sdmVkCmluIHRoZSBjb250ZXh0IHN3aXRjaCBiYWNrIHRvIHVz ZXJzcGFjZS4KCn5BbmRyZXcKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcK aHR0cHM6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=