From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: [PATCH for-4.9] livepatch: Declare live patching as a supported feature Date: Tue, 27 Jun 2017 10:17:38 +0100 Message-ID: References: <20170626153650.23017-1-ross.lagerwall@citrix.com> <41e01f96-bd1f-0a42-ad93-9e9c0bfd4b86@citrix.com> <17a0503e-6a26-d445-14d6-cb0bab029db8@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <17a0503e-6a26-d445-14d6-cb0bab029db8@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Andrew Cooper , Ross Lagerwall , xen-devel@lists.xen.org Cc: Lars Kurth , Stefano Stabellini , Wei Liu , George Dunlap , Ian Jackson , Julien Grall , Jan Beulich List-Id: xen-devel@lists.xenproject.org T24gMjYvMDYvMTcgMTg6MzAsIEFuZHJldyBDb29wZXIgd3JvdGU6Cj4gT24gMjYvMDYvMTcgMTg6 MDAsIEdlb3JnZSBEdW5sYXAgd3JvdGU6Cj4+IE9uIDI2LzA2LzE3IDE2OjM2LCBSb3NzIExhZ2Vy d2FsbCB3cm90ZToKPj4+IFhlbiBMaXZlIFBhdGNoaW5nIGhhcyBiZWVuIGF2YWlsYWJsZSBhcyB0 ZWNoIHByZXZpZXcgZmVhdHVyZSBzaW5jZSBYZW4KPj4+IDQuNyBhbmQgaGFzIG5vdyBoYWQgYSBj b3VwbGUgb2YgcmVsZWFzZXMgdG8gc3RhYmlsaXplLiBYZW4gTGl2ZSBwYXRjaGluZwo+Pj4gaGFz IGJlZW4gdXNlZCBieSBtdWx0aXBsZSB2ZW5kb3JzIHRvIGZpeCBzZXZlcmFsIHJlYWwtd29ybGQg c2VjdXJpdHkKPj4+IGlzc3VlcyB3aXRob3V0IGFueSBzZXZlcmUgYnVncyBlbmNvdW50ZXJlZC4g QWRkaXRpb25hbGx5LCB0aGVyZSBhcmUgbm93Cj4+PiB0ZXN0cyBpbiBPU1NUZXN0IHRoYXQgdGVz dCBsaXZlIHBhdGNoaW5nIHRvIGVuc3VyZSB0aGF0IG5vIHJlZ3Jlc3Npb25zCj4+PiBhcmUgaW50 cm9kdWNlZC4KPj4+Cj4+PiBCYXNlZCBvbiB0aGUgYW1vdW50IG9mIHRlc3RpbmcgYW5kIHVzYWdl IGl0IGhhcyBoYWQsIHdlIGFyZSByZWFkeSB0bwo+Pj4gZGVjbGFyZSBsaXZlIHBhdGNoaW5nIGFz IGEgJ1N1cHBvcnRlZCcgZmVhdHVyZS4KPj4gR3JlYXQgd3JpdGUtdXAsIFJvc3MsIHRoYW5rcy4g IEkgbW9yZSBvciBsZXNzIGFncmVlIHdpdGggZXZlcnl0aGluZwo+PiBleGNlcHQuLi4KPj4KPj4+ ICogQnVncyBpbiBsaXZlcGF0Y2gtYnVpbGQtdG9vbHMgY3JlYXRpbmcgaW5jb3JyZWN0IGxpdmUg cGF0Y2ggdGhhdAo+Pj4gICByZXN1bHRzIGluIGFuIGluc2VjdXJlIGhvc3Q6Cj4+PiAgICAgSWYg bGl2ZXBhdGNoLWJ1aWxkLXRvb2xzIGNyZWF0ZXMgYW4gaW5jb3JyZWN0IGxpdmUgcGF0Y2ggdGhh dAo+Pj4gICAgIHJlc3VsdHMgaW4gYW4gaW5zZWN1cmUgaG9zdCwgdGhpcyBzaGFsbCBub3QgYmUg Y29uc2lkZXJlZCBhIHNlY3VyaXR5Cj4+PiAgICAgaXNzdWUuIFRoZXJlIGFyZSB0b28gbWFueSBP U2VzIGFuZCB0b29sY2hhaW5zIHRvIGNvbnNpZGVyIHN1cHBvcnRpbmcKPj4+ICAgICB0aGlzLiBB IGxpdmUgcGF0Y2ggc2hvdWxkIGJlIGNoZWNrZWQgdG8gdmVyaWZ5IHRoYXQgaXQgaXMgdmFsaWQK Pj4+ICAgICBiZWZvcmUgbG9hZGluZy4KPj4gSSdtIG5vdCBzdXJlIEkgZm9sbG93IHRoZSBhcmd1 bWVudCBoZXJlLiAgU3VwcG9zZSBpbiBvbmUgbW9udGhzJyB0aW1lIGl0Cj4+IGlzIGRpc2NvdmVy ZWQgdGhhdCBsaXZlcGF0Y2gtYnVpbGQtdG9vbHMsIHVuZGVyIHNvbWUgY2lyY3Vtc3RhbmNlcywK Pj4gY3JlYXRlcyBwYXRjaGVzIHRoYXQgb3BlbiB1cCBhIHNpZGUgdnVsbmVyYWJpbGl0eS4gIERv IHlvdSByZWFsbHkgdGhpbmsKPj4gd2Ugc2hvdWxkIGp1c3QgcG9zdCBhIGZpeCB0byB0aGUgbWFp bGluZyBsaXN0LCB3aXRob3V0IGFsZXJ0aW5nIGFueWJvZHkKPj4gd2hvIG1heSBiZSBhZmZlY3Rl ZCBieSBpdD8KPiAKPiBUaGVyZSBhcmUgYSBtaWxsaW9uIHdheXMgdGhpcyBjb3VsZCBoYXBwZW4s IHN0YXJ0aW5nIGZyb20gdGhlIHNpbXBsZQo+IGNhc2VzIG9mIGFjY2lkZW50YWxseSBidWlsZGlu ZyB0aGUgbGl2ZXBhdGNoIGZyb20gYSBub24tY2xlYW4gd29ya2luZwo+IHRyZWUsIG9yIGFjY2lk ZW50YWxseSB1c2luZyBhIGNvbXBpbGVyIG90aGVyIHRoYW4gdGhlIG9uZSB1c2VkIHRvIGJ1aWxk Cj4gdGhlIHJ1bm5pbmcgaHlwZXJ2aXNvci4KPiAKPiBXZSBhYnNvbHV0ZWx5IGNhbm5vdCBiZSBp biB0aGUgcG9zaXRpb24gb2YgaXNzdWluZyBYU0FzIGZvciBzaXR1YXRpb25zCj4gbGlrZSB0aGlz LCBiZWNhdXNlIHRoZXJlIGFyZSB0b28gbWFueSB3YXlzIHdoZXJlIGl0IGRlZmluaXRlbHkgd2ls bCBnbwo+IHdyb25nLCBhbmQgd2UnZCBlbmQgdXAgaXNzdWluZyBYU0FzIHNheWluZyAicmVtZW1i ZXIgdG8gY2xlYW4geW91cgo+IHdvcmtpbmcgdHJlZSBiZWZvcmUgYnVpbGRpbmcgYSBsaXZlcGF0 Y2giLiAgVGhpcyBpcyBvZiBjb3Vyc2UgYWJzdXJkLgoKWW91ciBhcmd1bWVudCBpcyB0aGF0IGJl Y2F1c2Ugd2UgZG8gbm90IGlzc3VlIFhTQXMgZm9yICp1c2VyIG1pc3Rha2VzKiwKdGhhdCB0aGVy ZWZvcmUgd2Ugc2hvdWxkIG5vdCBpc3N1ZSBYU0FzIGZvciAqYnVncyBpbiB0aGUgdG9vbCouCgpU aGF0IGlzIG9mIGNvdXJzZSBhYnN1cmQuICBXZSBkbyBub3QgaXNzdWUgWFNBcyBmb3IgdXNlciBt aXN0YWtlcyBpbgpidWlsZGluZyB0aGUgaHlwZXJ2aXNvciBlaXRoZXIgKGZvciBpbnN0YW5jZSwg c3dpdGNoaW5nIGdjYyB2ZXJzaW9ucwp3aXRob3V0IGNsZWFuaW5nIHRoZSBoeXBlcnZpc29yIHRy ZWUpLCBhbmQgeWV0IHdlIHN0aWxsIGlzc3VlIFhTQXMgZm9yCmJ1Z3MgaW4gdGhlIGh5cGVydmlz b3IgaXRzZWxmLgoKPiBJTU8sIFRoZSBvbmx5IHZpYWJsZSBvcHRpb24gaXMgdG8gZXhjbHVkZSBs aXZlcGF0Y2gtYnVpbGQtdG9vbHMgZW50aXJlbHkKPiBmcm9tIHNlY3VyaXR5IHNjb3BlLiAgSXQg aXMgYWxyZWFkeSB0aGUgY2FzZSB0aGF0IHBlb3BsZSBwcm9kdWNpbmcKPiBsaXZlcGF0Y2hlcyBu ZWVkIHRvIGNoZWNrIHRoZSByZXN1bHRpbmcgbGl2ZXBhdGNoIGJpbmFyeSBmb3Igc2FuaXR5LCBh bmQKPiB0ZXN0IGl0IHN1aXRhYmx5IGluIGEgZGV2ZWxvcG1lbnQgZW52aXJvbm1lbnQgYmVmb3Jl IHVzZSBpbiBwcm9kdWN0aW9uLgoKTG9vaywgaXQgc291bmRzIGxpa2UgcmlnaHQgbm93IHlvdSBh cmUgZ29pbmcgdGhyb3VnaCBhbGwgdGhlIGxpdmVwYXRjaGVzCndpdGggYSBmaW5lLXRvb3RoIGNv bWIgKmJlY2F1c2UqIHRoZSB0b29scyBhcmUgKG9yIHJlY2VudGx5IGhhdmUgYmVlbikKdW5yZWxp YWJsZS4gIEJ1dCBhdCBzb21lIHBvaW50IGluIHRoZSBmdXR1cmUsIHRoZSBwYXRjaCBnZW5lcmF0 aW9uCm1lY2hhbmlzbSB3aWxsIGJlY29tZSBtb3JlIHJlbGlhYmxlLiAgQWZ0ZXIgMjAgWFNBcyBv dmVyIHNpeCBtb250aHMgaW4Kd2hpY2ggdGhlIGxpdmVwYXRjaCB0b29sIGNyZWF0ZWQgdGhlIGNv cnJlY3QgcGF0Y2gsIHlvdSB3aWxsIGJlY29tZSBtb3JlCmNvbXBsYWNlbnQuICBZb3Ugd29uJ3Qg bG9vayBhcyBjbG9zZWx5OyBpdCdzIGh1bWFuIG5hdHVyZS4KCllvdSBzZWVtIHRvIGJlIHNpbXBs eSByZWZ1c2luZyB0byB1c2UgeW91ciBpbWFnaW5hdGlvbi4gIFN0ZXAgYmFjay4KSW1hZ2luZSB5 b3Vyc2VsZiBpbiBvbmUgeWVhci4gIFlvdSBjb21lIHRvIHRoZSBvZmZpY2UgYW5kIGZpbmQgYW4g ZS1tYWlsCm9uIHNlY3VyaXR5QCB3aGljaCBzYXlzLCAiTGl2ZXBhdGNoIHRvb2xzIG9wZW4gYSBz ZWN1cml0eSBob2xlIHdoZW4KY29tcGlsaW5nIHdpdGggZ2NjIHgueXkiLiAgWW91IHJlYWxpemUg dGhhdCBYZW5WZXJzb24gJHtMQVRFU1QtMn0gdXNlcwpnY2MgeC55eSwgc28geW91IHRha2UgYSBj bG9zZXIgbG9vayBhdCB0aGF0IGxpdmVwYXRjaCwgb25seSB0byBkaXNjb3Zlcgp0aGF0IHRoZSBs aXZlcGF0Y2hlcyBnZW5lcmF0ZWQgYWN0dWFsbHkgZG8gY29udGFpbiB0aGUgYnVnLCBidXQgeW91 Cm1pc3NlZCBpdCBiZWNhdXNlICR7TEFURVNULVswLDFdfSB3ZXJlIHBlcmZlY3RseSBmaW5lIChz aW5jZSB0aGV5IHVzZWQKbmV3ZXIgdmVyc2lvbnMgb2YgZ2NjKSwgdGhlIGRpZmZlcmVuY2Ugd2Fz IHN1YnRsZSwgYW5kIGl0IHBhc3NlZCBhbGwgdGhlCmZ1bmN0aW9uYWwgdGVzdHMuCgpOb3cgYWxs IG9mIHRoZSBjdXN0b21lcnMgdGhhdCBoYXZlIGFwcGxpZWQgdGhvc2UgcGF0Y2hlcyBhcmUgdnVs bmVyYWJsZS4KCkRvIHlvdToKCjEuIFRlbGwgdGhlIHJlcG9ydGVyIHRvIHBvc3QgaXQgcHVibGlj bHkgdG8geGVuLWRldmVsIGltbWVkaWF0ZWx5LCBzaW5jZQpsaXZlcGF0Y2ggdG9vbHMgYXJlIG5v dCBzZWN1cml0eSBzdXBwb3J0ZWQgLS0gdGh1cyAiemVyby1kYXkiLWluZyBhbGwKeW91ciBjdXN0 b21lcnMgKGFzIHdlbGwgYXMgYW55b25lIGVsc2Ugd2hvIGhhcHBlbnMgdG8gaGF2ZSB1c2VkIHgu eXkgdG8KYnVpbGQgYSBoeXBlcnZpc29yKT8KCjIuIFNlY3JldGx5IHRha2UgYWR2YW50YWdlIG9m IENpdHJpeCcgcHJpdmlsZWdlZCBwb3NpdGlvbiBvbiB0aGUKc2VjdXJpdHkgbGlzdCwgYW5kIHRy eSB0byBnZXQgYW4gdXBkYXRlIG91dCB0byB5b3VyIGN1c3RvbWVycyBiZWZvcmUgaXQKZ2V0cyBh bm5vdW5jZWQgKGJ1dCBhbGxvd2luZyBldmVyeW9uZSAqZWxzZSogdXNpbmcgZ2NjIHgueXkgdG8K ZXhwZXJpZW5jZSBhIHplcm8tZGF5KT8KCjMuIElzc3VlIGFuIFhTQSBzbyB0aGF0IGV2ZXJ5b25l IGhhcyB0aGUgb3Bwb3J0dW5pdHkgdG8gZml4IHRoaW5ncyB1cApiZWZvcmUgbWFraW5nIGEgcHVi bGljIGFubm91bmNlbWVudCwgYW5kIHNvIHRoYXQgYW55b25lIG5vdCBvbiB0aGUKZW1iYXJnbyBs aXN0IGdldHMgYW4gYWxlcnQsIHNvIHRoZXkga25vdyB0byBlaXRoZXIgdXBkYXRlIHRoZWlyIG93 bgpsaXZlcGF0Y2hlcywgb3IgbG9vayBmb3IgdXBkYXRlcyBmcm9tIHRoZWlyIHNvZnR3YXJlIHBy b3ZpZGVyPwoKSSB0aGluayAjMyBpcyB0aGUgb25seSBwb3NzaWJsZSBjaG9pY2UuCgogLUdlb3Jn ZQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRl dmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhl bi5vcmcveGVuLWRldmVsCg==