From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [PATCH v2 3/5] xen/livepatch/ARM32: Don't load and crash on livepatches loaded with wrong alignment. Date: Sat, 9 Sep 2017 08:05:30 -0400 Message-ID: <20170909120529.GA19614@localhost.localdomain> References: <20170726194756.20265-1-konrad@kernel.org> <20170726194756.20265-4-konrad@kernel.org> <597F36D60200007800103088@prv-mh.provo.novell.com> <20170731160437.GK9952@char.us.oracle.com> <59819945020000780010323D@prv-mh.provo.novell.com> <20170907173644.GA7717@localhost.localdomain> <59B27F3F0200007800178AC9@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.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dqeW0-0005Kf-V8 for xen-devel@lists.xenproject.org; Sat, 09 Sep 2017 12:05:37 +0000 Received: by mail-qk0-f171.google.com with SMTP id b82so11342340qkc.4 for ; Sat, 09 Sep 2017 05:05:35 -0700 (PDT) Content-Disposition: inline In-Reply-To: <59B27F3F0200007800178AC9@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.cooper3@citrix.com, julien.grall@arm.com, sstabellini@kernel.org, xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org T24gRnJpLCBTZXAgMDgsIDIwMTcgYXQgMDM6MzA6MDdBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4gPj4+IE9uIDA3LjA5LjE3IGF0IDE5OjM2LCA8a29ucmFkQGtlcm5lbC5vcmc+IHdyb3Rl Ogo+ID4gT24gV2VkLCBBdWcgMDIsIDIwMTcgYXQgMDM6MjA6MDVBTSAtMDYwMCwgSmFuIEJldWxp Y2ggd3JvdGU6Cj4gPj4gPj4+IEtvbnJhZCBSemVzenV0ZWsgV2lsayA8a29ucmFkLndpbGtAb3Jh Y2xlLmNvbT4gMDcvMzEvMTcgNjowNCBQTSA+Pj4KPiA+PiA+T24gTW9uLCBKdWwgMzEsIDIwMTcg YXQgMDc6NTU6MzRBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3JvdGU6Cj4gPj4gPj4gPj4+IEtvbnJh ZCBSemVzenV0ZWsgV2lsayA8a29ucmFkQGtlcm5lbC5vcmc+IDA3LzI2LzE3IDk6NTAgUE0gPj4+ Cj4gPj4gPj4gPi0tLSBhL2RvY3MvbWlzYy9saXZlcGF0Y2gubWFya2Rvd24KPiA+PiA+PiA+Kysr IGIvZG9jcy9taXNjL2xpdmVwYXRjaC5tYXJrZG93bgo+ID4+ID4+ID5AQCAtMjc5LDYgKzI3OSwx MCBAQCBJdCBtYXkgYWxzbyBoYXZlIHNvbWUgYXJjaGl0ZWN0dXJlLXNwZWNpZmljIHNlY3Rpb25z LiAKPiA+IEZvciBleGFtcGxlOgo+ID4+ID4+ID4qIEV4Y2VwdGlvbiB0YWJsZXMuCj4gPj4gPj4g PiogUmVsb2NhdGlvbnMgZm9yIGVhY2ggb2YgdGhlc2Ugc2VjdGlvbnMuCj4gPj4gPj4gID4KPiA+ PiA+PiA+K05vdGUgdGhhdCBvbiBBUk0gMzIgdGhlIHNlY3Rpb25zIFNIT1VMRCBiZSBmb3VyIGJ5 dGUgYWxpZ25lZC4gT3RoZXJ3aXNlCj4gPj4gPj4gPit3ZSByaXNrIGhpdHRpbmcgRGF0YSBBYm9y dCBleGNlcHRpb24gYXMgdW4tYWxpZ25lZCBtYW5pcHVsYXRpb24gb2YgZGF0YSBpcwo+ID4+ID4+ ID4rcHJvaGliaXRlZCBvbiBBUk0gMzIuCj4gPj4gPj4gCj4gPj4gPj4gVGhpcyAoYW5kIGhlbmNl IHRoZSByZXN0IG9mIHRoZSBwYXRjaCkgaXMgbm90IGluIGxpbmUgd2l0aCB0aGUgb3V0Y29tZSBv ZiAKPiA+IHRoZQo+ID4+ID4+IGVhcmxpZXIgZGlzY3Vzc2lvbiB3ZSBoYWQuIE5vdGhpbmcgaXMg d3Jvbmcgd2l0aCBhIHNlY3Rpb24gaGF2aW5nIHNtYWxsZXIKPiA+PiA+PiBhbGlnbm1lbnQsIGFz IGxvbmcgYXMgdGhlcmUgYXJlIG5vIDMyLWJpdCAob3Igd2lkZXIsIGJ1dCBJIGRvbid0IHRoaW5r IHRoZXJlCj4gPj4gPj4gYXJlIGFueSBzdWNoKSByZWxvY2F0aW9ucyBhZ2FpbnN0IHN1Y2ggYSBz ZWN0aW9uLiBBbmQgZXZlbiBpZiB0aGVyZSB3ZXJlLCBJCj4gPj4gPj4gdGhpbmsgaXQgc2hvdWxk IHJhdGhlciBiZSB0aGUgY29kZSBkb2luZyB0aGUgcmVsb2NhdGlvbnMgbmVlZGluZyB0byBjb3Bl LCAKPiA+IGFzCj4gPj4gPj4gSSBkb24ndCB0aGluayB0aGUgQVJNIEVMRiBBQkkgaW1wb3NlcyBh bnkgc3VjaCByZXN0cmljdGlvbi4KPiA+PiA+Cj4gPj4gPlRoZSBpZGVhIGJlaGluZCB0aGlzIHBh dGNoIGlzIHRvIGdpdmUgYWR2YW5jZSB3YXJuaW5ncy4gQWtpbiB0byB3aGF0Cj4gPj4gPjJmZjIy OTY0M2I3MzllMmZkMGNkMDUzNmVlOWZjYTUwNmNmYTkyZjgKPiA+PiA+Inhlbi9saXZlcGF0Y2g6 IERvbid0IGNyYXNoIG9uIGVuY291bnRlcmluZyBTVE5fVU5ERUYgcmVsb2NhdGlvbnMiIGRpZC4K PiA+PiA+Cj4gPj4gPlRoZSBvdGhlciBwYXRjaGVzIGluIHRoaXMgc2VyaWVzIGZpeCB0aGUgYWxp Z25tZW50IGlzc3Vlcy4KPiA+PiA+Cj4gPj4gPlRoZSBBUk0gRUxGIEFCSSAKPiA+IChodHRwOi8v aW5mb2NlbnRlci5hcm0uY29tL2hlbHAvdG9waWMvY29tLmFybS5kb2MuaWhpMDA0NGYvSUhJMDA0 NEZfYWFlbGYucGRmIAo+ID4gKQo+ID4+ID4KPiA+PiA+c2F5czoKPiA+PiA+Cj4gPj4gPjQuMy41 IFNlY3Rpb24gQWxpZ25tZW50Cj4gPj4gPlRoZXJlIGlzIG5vIG1pbmltdW0gYWxpZ25tZW50IHJl cXVpcmVkIGZvciBhIHNlY3Rpb24uIEhvd2V2ZXIsIHNlY3Rpb25zIAo+ID4gY29udGFpbmluZyB0 aHVtYiBjb2RlIG11c3QgYmUgYXQgbGVhc3QKPiA+PiA+MTYtYml0IGFsaWduZWQgYW5kIHNlY3Rp b25zIGNvbnRhaW5pbmcgQVJNIGNvZGUgbXVzdCBiZSBhdCBsZWFzdCAzMi1iaXQgCj4gPiBhbGln bmVkLgo+ID4+ID5QbGF0Zm9ybSBzdGFuZGFyZHMgbWF5IHNldCBhIGxpbWl0IG9uIHRoZSBtYXhp bXVtIGFsaWdubWVudCB0aGF0IHRoZXkgY2FuIAo+ID4gZ3VhcmFudGVlIChub3JtYWxseSB0aGUg cGFnZSBzaXplKS4KPiA+PiAKPiA+PiBOb3RlIHRoZSAidGh1bWIgY29kZSIgYW5kICJBUk0gY29k ZSIgaW4gaGVyZSAtIGlpcmMgeW91J3JlIGNoZWNraW5nIF9hbGxfCj4gPj4gc2VjdGlvbnMsIG5v dCBqdXN0IG9uZXMgY29udGFpbmluZyBjb2RlLgo+ID4gCj4gPiBJIGNhbiBmaXggdGhlIGNvZGUg dG8gb25seSBkbyB0aGUgY2hlY2sgZm9yICdYJyBvbmVzOgo+ID4gCj4gPiAgIFsgMl0gLnRleHQg ICAgICAgICAgICAgUFJPR0JJVFMgICAgICAgICAwMDAwMDAwMDAwMDAwMDAwICAwMDAwMDA3MAo+ ID4gICAgICAgIDAwMDAwMDAwMDAwMDAwY2EgIDAwMDAwMDAwMDAwMDAwMDAgIEFYICAgICAgIDAg ICAgIDAgICAgIDE2Cj4gPiAgIFsgNF0gLmFsdGluc3RyX3JlcGxhY2UgUFJPR0JJVFMgICAgICAg ICAwMDAwMDAwMDAwMDAwMDAwICAwMDAwMDEzYwo+ID4gICAgICAgIDAwMDAwMDAwMDAwMDAwMGIg IDAwMDAwMDAwMDAwMDAwMDAgIEFYICAgICAgIDAgICAgIDAgICAgIDQKPiA+ICAgWyA1XSAuZml4 dXAgICAgICAgICAgICBQUk9HQklUUyAgICAgICAgIDAwMDAwMDAwMDAwMDAwMDAgIDAwMDAwMTQ3 Cj4gPiAgICAgICAgMDAwMDAwMDAwMDAwMDAwZCAgMDAwMDAwMDAwMDAwMDAwMCAgQVggICAgICAg MCAgICAgMCAgICAgMQo+ID4gCj4gPiAKPiA+IEFuZCBhbHNvIGhhdmUgdGhlIGNoZWNrIGluIHRo ZSByZWxvY2F0aW9uIC0gd2hpY2ggcmlnaHQgbm93IGFyZQo+ID4gMzItYml0OiBSX0FSTV9BQlMz MiwgUl9BUk1fUkVMMzIsIFJfQVJNX01PVldfQUJTX05DLCBSX0FSTV9NT1ZUX0FCUywKPiA+IFJf QVJNX0NBTEwsIFJfQVJNX0pVTVAyNCBzbyB3aWxsIGxlYXZlIHRoZSBjb2RlIGFzIGluCj4gPiBh cmNoX2xpdmVwYXRjaF9wZXJmb3JtLgo+IAo+IFJlbG9jYXRpb25zIGFwcGxpY2FibGUgdG8gY29k ZSBvbmx5IF9tYXlfIGJlIGFjY2VwdGFibGUgdG8gaGF2ZQo+IHN1Y2ggYW4gYWxpZ25tZW50IGNo ZWNrIChidXQgSSBjb3VsZCBzZWUgY2FzZXMgd2hlcmUgZXZlbiB0aGF0Cj4gbWlnaHQgYmUgdG9v IGFnZ3Jlc3NpdmUpLCBidXQgYWZhaWsgUl9BUk1fQUJTMzIgaXNuJ3QgYSBjb2RlCj4gb25seSBv bmUgKG91dCBvZiB0aGUgc2V0IGxpc3RlZCBhYm92ZSksIHNvIEkgZG91YnQgdGhpcyBzaG91bGQg aGF2ZQo+IGFuIGFsaWdubWVudCBjaGVjay4KPiAKPiA+IEJ1dCBuZWl0aGVyIG9uZSBvZiB0aG9z ZSBpcyBnb2luZyB0byBoZWxwIGluIGNhdGNoaW5nIGxpdmVwYXRjaGVzCj4gPiB0aGF0IGhhdmUg dGhlIHdyb25nIGFsaWdubWVudCB3aXRob3V0IHJlbG9jYXRpb25zIGFuZCBub3QgZXhlY3V0YWJs ZS4KPiA+IEZvciBleGFtcGxlIC5saXZlcGF0Y2guZGVwZW5kcwo+IAo+IFdoYXQgZG9lcyAid3Jv bmcgYWxpZ25tZW50IiBtZWFuIHdoZW4gdGhlcmUncyBubyBjb2RlIGludm9sdmVkPwoKQW55dGhp bmcgd2hpY2ggd2UgdHJ5IHRvIGFjY2VzcyBhcyBhIHN0cnVjdHVyZSwgb3IgdW5zaWduZWQgaW50 LAp0aGF0IGlzIG5vdCBhbGlnbmVkIHRvIGZvdXIgYnl0ZXMuCgpGb3IgZXhhbXBsZSBhY2Nlc3Np bmcgLmxpdmVwYXRjaC5kZXBlbmRzIGZyb20gbWVtb3J5IGFuZCBibG93aW5nCnVwIChoeXBlcnZp c29yIGNyYXNoZXMpIGIvYyBpdCBkb2VzIG5vdCBzdGFydCBhdCBhbiBmb3VyIGJ5dGUgYWxpZ25l ZApsb2NhdGlvbi4KCj4gSSB0aGluayB3aGF0IHlvdSB3YW50IHRvIGRldGVjdCBzaW1wbHkgY2Fu J3QgYmUgZGV0ZWN0ZWQgcmVsaWFibHksCj4gd2l0aG91dCByaXNraW5nIGZhbHNlIHBvc2l0aXZl cy4KPiAKPiBKYW4KPiAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0 cHM6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=