From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Morse Subject: Re: xen/arm: Software Step ARMv8 - PC stuck on instruction Date: Thu, 03 Aug 2017 11:46:17 +0100 Message-ID: <5982FEF9.7080007@arm.com> References: <51641005-94fc-2b04-ae49-25e84f3cc56f@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddDf6-00037m-Nf for xen-devel@lists.xenproject.org; Thu, 03 Aug 2017 10:47:28 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Florian Jakobsmeier , Julien Grall Cc: xen-devel , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org SGkgRmxvcmlhbiwKCk9uIDAzLzA4LzE3IDExOjE2LCBGbG9yaWFuIEpha29ic21laWVyIHdyb3Rl Ogo+IFRoaXMgaXMgdGhlIGN1cnJlbnQgdmVyc2lvbjoKCkknbSBub3QgZmFtaWxpYXIgd2l0aCBY ZW4sIHNvIGZvcmdpdmUgbXkgYW5ub3RhdGlvbnM6Cgo+IGFzbWxpbmthZ2Ugdm9pZCBsZWF2ZV9o eXBlcnZpc29yX3RhaWwodm9pZCkKPj4gIHsKPj4gKyAgICAvKlRoaXMgbWV0aG9kZSB3aWxsIGJl IGNhbGxlZCBhZnRlciB0aGUgJ2d1ZXN0X2VudHJ5JyBtYWNybyBpbgo+PiAvYXJjaC9hcm02NC9l bnRyeS5TIHNldCBndWVzdCByZWdpc3RlcnMKPj4gKyAgICBDaGVjayBzaW5nbGVfc3RlcF9lbmFi bGVkIGZsYWcgaW4gZG9tYWluIHN0cnVjdCBoZXJlIGFuZCBzZXQgbmVlZGVkCj4+IHJlZ2lzdGVy cwo+PiArICAgICovCj4+ICsKPj4gKyAgICBzdHJ1Y3QgdmNwdSAqdiA9IGN1cnJlbnQ7Cj4+ICsK Pj4gKyAgICBpZiAoIHVubGlrZWx5KHYtPmRvbWFpbi0+YXJjaC5tb25pdG9yLnNpbmdsZXN0ZXBf ZW5hYmxlZCApICkKPj4gKyAgICB7Cj4+ICsgICAgICAgIGlmKCEoZ3Vlc3RfY3B1X3VzZXJfcmVn cygpLT5jcHNyICYgMGIxMDAwKSkKClRoaXMgdGVzdHMgU1BTUi5NWzRdLCB3aGljaCBpcyBzZXQg Zm9yIGV4aXRzIGZyb20gQUFSQ0gzMi4KCgo+PiArICAgICAgICB7Cj4+ICsgICAgICAgICAgICBX UklURV9TWVNSRUcoUkVBRF9TWVNSRUcoTURTQ1JfRUwxKSB8IDB4MSwgTURTQ1JfRUwxKTsKClNl dHMgTURTQ1IuRUwxLlNTIHRvIGVuYWJsZSB0aGUgc3RhdGUgbWFjaGluZS4KCgo+PiArICAgICAg ICAgICAgV1JJVEVfU1lTUkVHKFJFQURfU1lTUkVHKE1EQ1JfRUwyKSAgfCBIRENSX1RERSwgTURD Ul9FTDIpOwoKU2V0cyBUREUgdG8gdHJhcCBkZWJ1ZyBleGNlcHRpb25zIHRvIEVMMiBmcm9tIGxv d2VyIGV4Y2VwdGlvbiBsZXZlbHMuIEknbQpzdXJwcmlzZWQgdGhpcyBpc24ndCBhbHdheXMgc2V0 IGZvciBYZW4uIERvIHlvdSBhbGxvdyBndWVzdHMgdG8gdXNlIHRoZSBkZWJ1ZwpmZWF0dXJlcyBm b3IgdGhlaXIgb3duIHB1cnBvc2VzPwoKCj4+ICsgICAgICAgICAgICBndWVzdF9jcHVfdXNlcl9y ZWdzKCktPmNwc3IgPSBndWVzdF9jcHVfdXNlcl9yZWdzKCktPmNwc3IgfAo+PiAweDIwMDAwMDsK ClNldHMgU1BTUi5TUyB0byBzdXBwcmVzcyB0aGUgc3RlcCBleGNlcHRpb24gaW4gdGhlIGd1ZXN0 IHVudGlsIGl0cyBleGVjdXRlZCBhbgppbnN0cnVjdGlvbi4KCgo+PiArICAgICAgICAgICAgV1JJ VEVfU1lTUkVHKCBSRUFEX1NZU1JFRyhEQUlGKSAmIH4weDIwMCwgREFJRik7CgpIZXJlIEknbSBj b25mdXNlZC4gVGhpcyBsb29rcyBsaWtlIHlvdSBhcmUgY2xlYXJpbmcgUFNUQVRFLkQgZnJvbSB0 aGUgREFJRgpyZWdpc3RlciBmb3IgRUwyLiBUaGlzIG1lYW5zIGRlYnVnIGV4Y2VwdGlvbnMgYXJl IHVubWFza2VkIGZvciBleGNlcHRpb25zIGZyb20KWGVuIGF0IEVMMi4KCklmIHlvdSBFUkVUIHdp dGggUFNUQVRFLkQgY2xlYXIgdGhlIFNQU1IuU1MgYml0IHdpbGwgYmUgZGlzY2FyZGVkIGluc3Rl YWQuIEkKdGhpbiB0aGlzIGlzIHlvdXIgYnVnLiBUaGUgcnVsZXMgaW4gJ0QyLjEyLjQgRW50ZXJp bmcgdGhlIGFjdGl2ZS1ub3QtcGVuZGluZwpzdGF0ZScgcmVxdWlyZSAnRGVidWcgZXhjZXB0aW9u cyBhcmUgZGlzYWJsZWQgZnJvbSB0aGUgY3VycmVudCBFeGNlcHRpb24gbGV2ZWwnLgoKWW91J3Zl IHNldCBNRFNDUl9FTDEuU1MsIGlmIHlvdSBhbHNvIGhhdmUgTURTQ1JfRUwxLktERSBzZXQgeW91 IHdpbGwgc3RhcnQKc2luZ2xlLXN0ZXBwaW5nIFhlbiBvbmNlIHRoZSByZWdpc3RlciB3cml0ZXMg dGFrZSBlZmZlY3QsICh3aGljaCBtYXkgYmUgYmVmb3JlCm9yIGFmdGVyIHRoaXM6KQoKPj4gKyAg ICAgICAgICAgIGlzYigpOwoKV2hhdCBhcmUgeW91IHN5bmNocm9uaXNpbmcgaGVyZT8gKFVubGVz cyB5b3Ugd2FudCB0byBzaW5nbGUtc3RlcCBYZW4gSSBzdXNwZWN0CnlvdSBkb24ndCBuZWVkIHRo aXMgYXQgYWxsLikKCgoKRG8geW91IHN0aWxsIHNlZSB0aGUgaXNzdWUgaWYgeW91IHJlbW92ZSB0 aGUgUFNUQVRFLkQgd3JpdGU/CgoKVGhhbmtzLAoKSmFtZXMKCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1k ZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK