From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH] x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS if forced to zero Date: Tue, 25 Apr 2017 21:17:13 +0100 Message-ID: <4dcc2a92-5d58-67df-1bd4-8f36cbaa16b4__26299.2211421535$1493151496$gmane$org@citrix.com> References: <20170425180014.7533-1-jgross@suse.com> <20170425182443.3ab75tkfosol2yk4@pd.tnic> <20170425191809.uvdt4jimnbvqbyf2@pd.tnic> 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.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d36tg-0004H5-K1 for xen-devel@lists.xenproject.org; Tue, 25 Apr 2017 20:17:16 +0000 In-Reply-To: <20170425191809.uvdt4jimnbvqbyf2@pd.tnic> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Borislav Petkov , Juergen Gross Cc: x86@kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com, xen-devel@lists.xenproject.org, boris.ostrovsky@oracle.com, tglx@linutronix.de List-Id: xen-devel@lists.xenproject.org T24gMjUvMDQvMTcgMjA6MTgsIEJvcmlzbGF2IFBldGtvdiB3cm90ZToKPiBPbiBUdWUsIEFwciAy NSwgMjAxNyBhdCAwODozNDozNFBNICswMjAwLCBKdWVyZ2VuIEdyb3NzIHdyb3RlOgo+PiBBbmQg d2hhdCBoYXBwZW5zIHdoZW4gdGhlcmUgaXMgYSBzY2hlZHVsaW5nIGV2ZW50IHJpZ2h0IGhlcmU/ Cj4+IF9fc3dpdGNoX3RvKCkgd2lsbCBzZWUgWDg2X0JVR19TWVNSRVRfU1NfQVRUUlMgc2V0IGFu ZCB0YWtlIGEgd3JvbmcKPj4gcGF0aC4KPiBTbyB0aGUgd2hvbGUgdGhpbmcgd2UncmUgZG9pbmcg cmlnaHQgbm93IGlzIHdyb25nOiBzZXQgYml0IGFuZCB0aGVuCj4gY2xlYXIgYml0Lgo+Cj4gV2Ug c2hvdWxkIG5vdCBzZXQgdGhlIGJpdCBhdCBhbGwgYW5kIHRoZXJlIHdvbid0IGJlIGFueSB3aW5k b3cgdG8gZ2V0IGl0Cj4gd3JvbmcuCj4KPiBTbyBjYW4gd2UgZG8gc29tZXRoaW5nIGxpa2UgdGhp cyBpbnN0ZWFkOgo+Cj4gCWlmICghY3B1X2hhcyhjLCBYODZfRkVBVFVSRV9YRU5QVikpCj4gCQlz ZXRfY3B1X2J1ZyhjLCBYODZfQlVHX1NZU1JFVF9TU19BVFRSUyk7Cj4KPiBvciBpcyBYRU5QViB0 aGUgd3JvbmcgdGhpbmcgdG8gdGVzdD8KPgoKWDg2X0JVR19TWVNSRVRfU1NfQVRUUlMgb25seSBh Y3R1YWxseSBjYXVzZXMgYSBwcm9ibGVtIGlmIHlvdSBlbnRlciB0aGUKa2VybmVsIHZpYSBhbiBJ RFQgdmVjdG9yIChmb3JjaW5nICVzcyB0byBOVUxMKSwgdGhlbiBleGl0aW5nIHRoZSBrZXJuZWwK dmlhIHRoZSBvcHRpbWlzdGljIHN5c3JldCBwYXRoLCB3aGljaCBvbiBBTUQgbG9hZHMgdGhlICVz cyBzZWxlY3RvciwgYnV0CmFwcGFyZW50bHkgZG9lc24ndCB1cGRhdGUgdGhlIHNlZ21lbnQgY2Fj aGUgKGFuZCAlc3MuZHBsIGluIHBhcnRpY3VsYXIpLgoKVGhlIHByb2JsZW0gKGZvciBhbGwgcmlu Zy1kZXByaXZpbGVnZWQgdmlydHVhaWxzYXRpb247IG5vdCBqdXN0IFhlbiBQViksCmlzIHRoYXQK CnNhdmVzZWdtZW50KHNzLCBzc19zZWwpOwppZiAoc3Nfc2VsICE9IF9fS0VSTkVMX0RTKQogICAg bG9hZHNlZ21lbnQoc3MsIF9fS0VSTkVMX0RTKTsKCnRyaWVzIHRvIGxvYWQgJXNzIHdpdGggYW4g UlBMIG9mIDAsIGFuZCB0aGluZ3MgYmxvdyB1cC4KCn5BbmRyZXcKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVu LWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cHM6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=