From mboxrd@z Thu Jan 1 00:00:00 1970 From: He Chen Subject: Re: [PATCH V2] xen: support enabling SMEP/SMAP for HVM only Date: Fri, 12 Aug 2016 18:03:20 +0800 Message-ID: <20160812100320.GA31791@HE> References: <1470907073-17801-1-git-send-email-he.chen@linux.intel.com> <57AC963E0200007800105182@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <57AC963E0200007800105182@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: Andrew Cooper , Wu Feng , Wang Yong , Nakajima Jun , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gVGh1LCBBdWcgMTEsIDIwMTYgYXQgMDc6MTQ6MDZBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4gPj4+IE9uIDExLjA4LjE2IGF0IDExOjE3LCA8aGUuY2hlbkBsaW51eC5pbnRlbC5jb20+ IHdyb3RlOgo+ID4gQEAgLTE0MDQsMTIgKzE0MzgsMjAgQEAgdm9pZCBfX2luaXQgbm9yZXR1cm4g X19zdGFydF94ZW4odW5zaWduZWQgbG9uZyBtYmlfcCkKPiA+ICAgICAgaWYgKCAhb3B0X3NtZXAg KQo+ID4gICAgICAgICAgc2V0dXBfY2xlYXJfY3B1X2NhcChYODZfRkVBVFVSRV9TTUVQKTsKPiA+ ICAgICAgaWYgKCBjcHVfaGFzX3NtZXAgKQo+ID4gKyAgICB7Cj4gPiAgICAgICAgICBzZXRfaW5f Y3I0KFg4Nl9DUjRfU01FUCk7Cj4gPiArICAgICAgICBpZiAoIHNtZXBfaHZtX29ubHkgKQo+ID4g KyAgICAgICAgICAgIHdyaXRlX2NyNChyZWFkX2NyNCgpICYgflg4Nl9DUjRfU01FUCk7Cj4gPiAr ICAgIH0KPiAKPiBTbyB0aGF0J2xsIGNsZWFyIENSNC5TTUVQIHJpZ2h0IGhlcmUsIGJ1dCB3b24n dCBoZWxwIHdpdGggQ1I0IGxvYWRzCj4gZnJvbSBtbXVfY3I0X2ZlYXR1cmVzIChhcyBlLmcuIGhh cHBlbnMgaW5kaXJlY3RseSBkdXJpbmcgVk0gZXhpdHMsCj4gc2luY2UgdGhlIEhPU1RfQ1I0IGZp ZWxkIGdldHMgc2V0IGZyb20gdGhpcyB2YXJpYWJsZSkuCj4gCj4gRGlkIHlvdSBpbiBmYWN0IHRl c3QgeW91ciBjaGFuZ2UsIGluY2x1ZGluZyB2YWxpZGF0aW9uIG9mIHRoZSBmZWF0dXJlcwo+IGNv cnJlY3RseSByZW1haW5pbmcgb2ZmIG92ZXIgdGhlIGxpZmV0aW1lIG9mIHRoZSBzeXN0ZW0/Cj4g Cj4gRnVydGhlciwgY29uc2lkZXJpbmcgdGhhdCB5b3UgZG9uJ3QgY2xlYXIgdGhlIHR3byBmbGFn cyBmcm9tIFhlbidzCj4gaW50ZXJuYWwgZmVhdHVyZSBiaXRtYXAsIGFuZCB0YWtlbiB0b2dldGhl ciB3aXRoIHRoZSBpbnRlcm5hbCBmZWF0dXJlCj4gYml0bWFwIGRyaXZpbmcgYWx0ZXJuYXRpdmUg aW5zdHJ1Y3Rpb24gcGF0Y2hpbmcsIEknZCBhc3N1bWUgcG9pbnRsZXNzCj4gKGFuZCBwZXJmb3Jt YW5jZSB3aXNlIHBlcmhhcHMgaGFybWZ1bCkgcGF0Y2hpbmcgdG8gbm93IHRha2UgcGxhY2UuCj4g CkxldCBtZSBzZWUgd2hldGhlciBJIHVuZGVyc3RhbmQgdGhpcyBjb3JyZWN0bHkuLi4KClJlZ2Fy ZGluZyBhbHRlcm5hdGl2ZSBpbnN0cnVjdGlvbiBwYXRjaGluZywgaWYgZW5hYmxpbmcgU01BUCBm b3IgSFZNIGJ1dApkaXNhYmxpbmcgaXQgZm9yIFhlbiwgU01BUCBiaXQgbXVzdCBiZSBzZXQgaW4g eDg2X2NhcGFiaWxpdHkgZmVhdHVyZQpiaXRtYXAgYW5kIGNsZWFyZWQgaW4gbW11X2NyNF9mZWF0 dXJlcywgd2hpY2ggbWVhbnMgaW5zdHJ1Y3Rpb24gcGF0Y2hpbmcKd291bGQgdGFrZSBwbGFjZSBh bmQgYSAjVUQgbWF5IG9jY3VyIChzaW5jZSBTTUFQIGlzIGRpc2FibGUgaW4gWGVuLCBidXQKU1RB Qy9DTEFDIGFyZSBwYXRjaGVkIGFuZCBjYWxsZWQpLgoKQSBsaXR0bGUgZGlydHkgc29sdXRpb24g SSBjYW4gdGhpbmsgb2Ygbm93IGlzIHRvIHRlbXBlcmFyaWx5IGNsZWFyIFNNQVAKYml0IGluIHg4 Nl9jYXBhYmlsaXR5IGJlZm9yZSBwYXRjaGluZyBpbnN0cnVjdGlvbiBhbmQgdGhlbiBzZXQgaXQg YmFjawp3aGVuIGluc3RydWN0aW9uIHBhdGNoaW5nIGZpbmlzaCwgbGlrZToKCmBgYAppZiAoIG9w dF9zbWFwID09IFNNQVBfSFZNX09OTFkgKQogICAgc2V0dXBfY2xlYXJfY3B1X2NhcChYODZfRkVB VFVSRV9TTUFQKTsKCmFsdGVybmF0aXZlX2luc3RydWN0aW9ucygpOwoKaWYgKCBvcHRfc21hcCA9 PSBTTUFQX0hWTV9PTkxZICkKICAgIF9fc2V0X2JpdChYODZfRkVBVFVSRV9TTUFQLCBib290X2Nw dV9kYXRhLng4Nl9jYXBhYmlsaXR5KTsKYGBgCgpBcHByZWNpYXRlIGl0IGlmIHlvdSBoYXZlIGEg YmV0dGVyIHNvbHV0aW9uLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpo dHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==