From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Wu, Feng" Subject: Re: [PATCH 2/4] x86: suppress SMAP and SMEP while running 32-bit PV guest code Date: Wed, 9 Mar 2016 13:35:29 +0000 Message-ID: References: <56D97AC102000078000D9537@prv-mh.provo.novell.com> <56D97F4802000078000D9561@prv-mh.provo.novell.com> <56DFFEE4.1020008@citrix.com> <56E01806.7020602@citrix.com> <56E018CE02000078000E430D@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.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1adeH1-0008Ky-Ad for xen-devel@lists.xenproject.org; Wed, 09 Mar 2016 13:35:35 +0000 In-Reply-To: <56E018CE02000078000E430D@prv-mh.provo.novell.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich , "andrew.cooper3@citrix.com" , "xen-devel@lists.xenproject.org" Cc: "Wu, Feng" , "keir@xen.org" List-Id: xen-devel@lists.xenproject.org Cgo+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tCj4gRnJvbTogSmFuIEJldWxpY2ggW21haWx0 bzpqYmV1bGljaEBzdXNlLmNvbV0KPiBTZW50OiBXZWRuZXNkYXksIE1hcmNoIDksIDIwMTYgODoz NyBQTQo+IFRvOiBhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tOyBXdSwgRmVuZyA8ZmVuZy53dUBp bnRlbC5jb20+OyB4ZW4tCj4gZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKPiBDYzoga2VpckB4 ZW4ub3JnCj4gU3ViamVjdDogUmU6IFtQQVRDSCAyLzRdIHg4Njogc3VwcHJlc3MgU01BUCBhbmQg U01FUCB3aGlsZSBydW5uaW5nIDMyLWJpdCBQVgo+IGd1ZXN0IGNvZGUKPiAKPiA+Pj4+IEFuZHJl dyBDb29wZXIgPGFuZHJldy5jb29wZXIzQGNpdHJpeC5jb20+IDAzLzA5LzE2IDE6MzMgUE0gPj4+ Cj4gPk9uIDA5LzAzLzE2IDEyOjI3LCBXdSwgRmVuZyB3cm90ZToKPiA+PiBPaCwgdGhhbmtzIGZv ciB0aGUgY2xhcmlmaWNhdGlvbiEgRG8geW91IGtub3cgaG93ICJBbiBOTUkgb3IgI01DIG1heQo+ IG9jY3VyCj4gPj4gYmV0d2VlbiBjbGVhcmluZyBDUjQuU01FUCBhbmQgQ1I0LlNNQVAgaW4gY29t cGF0X3Jlc3RvcmVfYWxsX2d1ZXN0IGFuZAo+ID4+IGl0IGFjdHVhbGx5IHJldHVybmluZyB0byBn dWVzdCBjb250ZXh0LCBpbiB3aGljaCBjYXNlIHRoZSBndWVzdCB3b3VsZCBydW4gd2l0aAo+ID4+ IHRoZSB0d28gZmVhdHVyZXMgZW5hYmxlZC4gIiBjYW4gaGFwcGVuPyBFc3BlY2lhbGx5IGhvdyB0 aGUgZ3Vlc3QgY2FuIHJ1bgo+ID4+IHdpdGggdGhlIHR3byBmZWF0dXJlcyBlbmFibGVkPwo+ID4K PiA+Tk1JcyBhbmQgTUNFcyBjYW4gb2NjdXIgYXQgYW55IHBvaW50LCBldmVuIGlmIGludGVycnVw dHMgYXJlIGRpc2FibGVkLgo+ID4KPiA+VGhlIGJhZCBzaXR1YXRpb24gaXMgdGhpcyBzZXF1ZW5j ZToKPiA+Cj4gPiogWGVuIGlzIHJldHVybmluZyB0byB0aGUgZ3Vlc3QgYW5kIGRpc2FibGVzIENS NC5TTUVQL1NNQVAKPiA+KiBOTUkgb2NjdXJzIHdoaWxlIHN0aWxsIGluIFhlbgo+ID4qIE5NSSBl eGl0IHBhdGggc2VlcyBpdCBpcyByZXR1cm5pbmcgdG8gWGVuIGFuZCByZS1lbmFibGVkIENSNC5T TUVQL1NNQVAKPiAKPiBXZWxsLCBhbG1vc3Q6IFJlLWVuYWJsaW5nIGhhcHBlbnMgb24gdGhlIE5N SSBlbnRyeSBwYXRoLiBUaGUgTk1JIGV4aXQKPiBwYXRoIHdvdWxkLCBzZWVpbmcgaXQncyByZXR1 cm5pbmcgdG8gWGVuIGNvbnRleHQsIHNpbXBseSBub3QgZGlzYWJsZSB0aGVtCj4gYWdhaW4uCgpU aGlua2luZyBhYm91dCB0aGlzIGFnYWluLCBpbiB0aGlzIGNhc2UsIHdoZW4gdGhlIE5NSSBoYXBw ZW5zLCB3ZSBhcmUgaW4KWGVuIGNvbnRleHQgKENQTCBpbiBjcyBpcyAwKSwgc28gdGhlIENQTCBv ZiB0aGUgc2F2ZWQgY3MgaW4gc3RhY2sgaXMgMCxyaWdodD8Kd2h5IGRvIHdlIHJlLWVuYWJsZSBD UjQuU01FUC9TTUFQIGluIHRoaXMgY2FzZT8gSSBtZWFuIGRvIHdlIG9ubHkKbmVlZCB0byBlbmFi bGUgU01FUC9TTUFQIHdoZW4gY29taW5nIGZyb20gMzJiaXQgcHYgZ3Vlc3QgKENQTCBvZiBjcyBp cyAxKSA/CgpUaGFua3MsCkZlbmcKCj4gCj4gSmFuCj4gCj4gPiogWGVuIGVuZHMgdXAgcmV0dXJu aW5nIHRvIGd1ZXN0IHdpdGggQ1I0LlNNRVAvU01BUCBlbmFibGVkLgo+ID4KPiA+fkFuZHJldwo+ IAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1k ZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cDovL2xpc3RzLnhl bi5vcmcveGVuLWRldmVsCg==