From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH 05/13] xen/arm: Add command line option to control SSBD mitigation Date: Fri, 25 May 2018 20:56:20 +0100 Message-ID: <4205e1a0-d373-f3b4-9838-70ff261d2abe@arm.com> References: <20180522174254.27551-1-julien.grall@arm.com> <20180522174254.27551-6-julien.grall@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fNcKH-0007bS-QJ for xen-devel@lists.xenproject.org; Tue, 29 May 2018 10:58:01 +0000 In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Stefano Stabellini Cc: xen-devel@lists.xenproject.org, andre.przywara@arm.com List-Id: xen-devel@lists.xenproject.org SGkgU3RlZmFubywKCk9uIDA1LzI0LzIwMTggMDE6NDggQU0sIFN0ZWZhbm8gU3RhYmVsbGluaSB3 cm90ZToKPiBPbiBXZWQsIDIzIE1heSAyMDE4LCBTdGVmYW5vIFN0YWJlbGxpbmkgd3JvdGU6Cj4+ IE9uIFR1ZSwgMjIgTWF5IDIwMTgsIEp1bGllbiBHcmFsbCB3cm90ZToKPj4+ICsKPj4+ICsgICAg ZGVmYXVsdDoKPj4+ICsgICAgICAgIEFTU0VSVF9VTlJFQUNIQUJMRSgpOwo+Pj4gKyAgICAgICAg cmV0dXJuIGZhbHNlOwo+Pj4gKyAgICB9Cj4+PiArCj4+PiArICAgIHN3aXRjaCAoIHNzYmRfc3Rh dGUgKQo+Pj4gKyAgICB7Cj4+PiArICAgIGNhc2UgQVJNX1NTQkRfRk9SQ0VfRElTQUJMRToKPj4+ ICsgICAgewo+Pj4gKyAgICAgICAgc3RhdGljIGJvb2wgb25jZSA9IHRydWU7Cj4+PiArCj4+PiAr ICAgICAgICBpZiAoIG9uY2UgKQo+Pj4gKyAgICAgICAgICAgIHByaW50aygiJXMgZGlzYWJsZWQg ZnJvbSBjb21tYW5kLWxpbmVcbiIsIGVudHJ5LT5kZXNjKTsKPj4+ICsgICAgICAgIG9uY2UgPSBm YWxzZTsKPj4+ICsKPj4+ICsgICAgICAgIGFybV9zbWNjY18xXzFfc21jKEFSTV9TTUNDQ19BUkNI X1dPUktBUk9VTkRfMl9GSUQsIDAsIE5VTEwpOwo+Pj4gKyAgICAgICAgcmVxdWlyZWQgPSBmYWxz ZTsKPj4+ICsKPj4+ICsgICAgICAgIGJyZWFrOwo+Pj4gKyAgICB9Cj4+PiArCj4+PiArICAgIGNh c2UgQVJNX1NTQkRfUlVOVElNRToKPj4+ICsgICAgICAgIGlmICggcmVxdWlyZWQgKQo+Pj4gKyAg ICAgICAgewo+Pj4gKyAgICAgICAgICAgIHRoaXNfY3B1KHNzYmRfY2FsbGJhY2tfcmVxdWlyZWQp ID0gMTsKPj4KPj4gV2UgaGF2ZSB0aGUgQVJNX1NTQkQgYml0LCB0aGUgc3NiZF9zdGF0ZSB2YXJp YWJsZSBhbmQKPj4gc3NiZF9jYWxsYmFja19yZXF1aXJlZC4gQm90aCBBUk1fU1NCRCBhbmQgc3Ni ZF9zdGF0ZSBhcmUgc2hhcmVkIGFjcm9zcwo+PiBjb3JlcyB3aGlsZSBzc2JkX2NhbGxiYWNrX3Jl cXVpcmVkIGlzIHBlci1jcHUuIERvZXMKPj4gc3NiZF9jYWxsYmFja19yZXF1aXJlZCByZWFsbHkg bmVlZCB0byBiZSBwZXItY3B1PyBEbyB3ZSBuZWVkIGJvdGgKPj4gdmFyaWFibGVzPyBGb3IgaW5z dGFuY2UsIHdlIGNvdWxkIGp1c3QgcmV0dXJuIHNzYmRfc3RhdGUgPT0KPj4gQVJNX1NTQkRfUlVO VElNRSBpbnN0ZWFkIG9mIHRoaXNfY3B1KHNzYmRfY2FsbGJhY2tfcmVxdWlyZWQpPwo+IAo+IEFm dGVyIHJlYWRpbmcgdGhlIHdob2xlIHNlcmllcywgSSB0aGluayBzc2JkX3N0YXRlIHNob3VsZCBi ZSBhIHBlcl9jcHUKPiB2YXJpYWJsZS4gcGFyc2Vfc3BlY19jdHJsIGluaXRpYWxpemVzIHNzYmRf c3RhdGUgdG8gdGhlIHNhbWUgdmFsdWUgb24KPiBhbGwgY3B1cy4gaGFzX3NzYmRfbWl0aWdhdGlv biBtb2RpZmllcyBzc2JkX3N0YXRlIG9ubHkgb24gdGhlIENQVXMgaXQgaXMKPiBydW5uaW5nIG9u LiBXZSBnZXQgcmlkIG9mIHNzYmRfY2FsbGJhY2tfcmVxdWlyZWQuIFRoZSBhc3NlbWJseSBmYXN0 IHBhc3QKPiByZWFkcyBzc2JkX3N0YXRlIGluc3RlYWQgb2Ygc3NiZF9jYWxsYmFja19yZXF1aXJl ZC4KPiAKPiBXaGF0IGRvIHlvdSB0aGluaz8KCldlIG5lZWQgdG8ga2VlcCB0aGUgZ2xvYmFsIHNz YmRfc3RhdGUgYXJvdW5kIGZvciB0aGUgdnNtYyBjb2RlIGFzIHdlIApuZWVkIHRvIHRlbGwgdGhl IGd1ZXN0IHdoYXQgaXMgdGhlIHN5c3RlbS13aWRlIGRlY2lzaW9uLgoKVGhpcyBpcyBiZWNhdXNl IGEgdkNQVSBtYXkgbW92ZSBmcm9tIGEgYWZmZWN0ZWQgQ1BVIHRvIGEgbm9uLWFmZmVjdGVkIApv bmUuIFNvIHdlIG5lZWQgdG8gaW5mb3JtIHRoZSBzYW1lIG9uIGV2ZXJ5IHZDUFUgKGkuZSBtaXRp Z2F0ZWQsIApkeW5hbWljLi4uKS4KCkNoZWVycywKCi0tIApKdWxpZW4gR3JhbGwKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5n IGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJv amVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=