From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: Modules support in Xen (WAS: Re: [ARM] Native application design and discussion (I hope)) Date: Fri, 12 May 2017 12:48:24 +0100 Message-ID: References: <29f244da-2346-70a7-13f0-e5c0cbf490d7@epam.com> <1494324789.9501.7.camel@citrix.com> <1494328112.9501.9.camel@citrix.com> <6deb968f-f0bb-1537-4bd5-905ecaa925e6@citrix.com> <785dff0f-6026-d033-131a-764510788b53@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Volodymyr Babchuk Cc: Stefano Stabellini , Andrii Anisov , Ian Jackson , Dario Faggioli , Tim Deegan , Xen Devel , Julien Grall , Jan Beulich , Andrew Cooper , Wei Liu , Artem Mygaiev List-Id: xen-devel@lists.xenproject.org W3Jlb3JkZXJpbmcgc2xpZ2h0bHkgdG8gbWFrZSB0aGUgcmVzcG9uc2UgZWFzaWVyXQoKT24gVGh1 LCBNYXkgMTEsIDIwMTcgYXQgNzoxMyBQTSwgVm9sb2R5bXlyIEJhYmNodWsKPHZsYWQuYmFiY2h1 a0BnbWFpbC5jb20+IHdyb3RlOgo+PiBNYXliZSBJJ20ganVzdCBub3QgZmFtaWxpYXIgd2l0aCB0 aGluZ3MsIGJ1dCBpdCdzIGhhcmQgZm9yIG1lIHRvIGltYWdpbmUKPj4gd2h5IHlvdSdkIG5lZWQg cHJvcHJpZXRhcnkgYmxvYnMgdG8gZGlzYWJsZSBjcHVzIG9yIHNjYWxlIGZyZXF1ZW5jeS4KPj4g QXJlIHRoZXNlIHJlYWxseSBzdWNoIGNvbXBsZXggYWN0aXZpdGllcyB0aGF0IGl0J3Mgd29ydGgg aW52ZXN0aW5nCj4+IHRob3VzYW5kcyBvZiBob3VycyBvZiBkZXZlbG9wZXIgd29yayBpbnRvIGRl dmVsb3BpbmcgcHJvcHJpZXRhcnkKPj4gc29sdXRpb25zIHRoYXQgeW91IGxpY2Vuc2U/Cj4gT2th eSwgSSBkb24ndCBrbm93IG5vIHBsYXRmb3JtIHdoZXJlIHlvdSBuZWVkIHByb3ByaWV0YXJ5IGJs b2IgdG8KPiBzY2FsZSBmcmVxdWVuY3kuIEFuZCBJIGhvcGUsIEkgbmV2ZXIgd2lsbCBlbmNvdW50 ZXIgb25lLgo+IEJ1dCBJIGNhbiBpbWFnaW5lIGl0OiBzb21lIGZpcm13YXJlIGJpbmFyeSB0aGF0 IG5lZWRzIHRvIGJlIHVwbG9hZGVkCj4gaW50byBQTUlDLiBDYW4gd2Ugc3RvcmUgdGhpcyBmaXJt d2FyZSBpbiB0aGUgaHlwZXJ2aXNvcj8gSSBkb24ndCBrbm93Lgo+IEknbSBub3QgYSBsYXd5ZXIu CgpPbiB4ODYsIHdlIGRvIG1pY3JvY29kZSB1cGRhdGVzLCB3aGljaCBhcmUgKGFzIEkgdW5kZXJz dGFuZCBpdCkgYmluYXJ5CmJsb2JzIHRoYXQgZ2V0IHBhc3NlZCB0aHJvdWdoIHRoZSBoeXBlcnZp c29yIHRvIHRoZSBjcHVzLiAgVGhpcyBibG9iCmlzbid0IGV4ZWN1dGVkIGJ5IFhlbiwgc28gaXQg ZG9lc24ndCBzZWVtIGxpa2UgeW91IHdvdWxkIGJlIGFibGUgdG8KYXJndWUgdGhhdCBwYXNzaW5n IGEgYmluYXJ5IGJsb2IgdGhyb3VnaCB0aGUgaHlwZXJ2aXNvciBjcmVhdGVzIGEKZGVyaXZhdGl2 ZSAvIGNvbWJpbmVkIHdvcmsuICBJbiB0aGF0IGNhc2UgdGhlIGJsb2JzIGFyZSBzdG9yZWQgYXMK ZmlsZXMgb24gZGlzayBhbmQgcGFzc2VkIHRvIFhlbiBhdCBib290IHRpbWUgKHZpYSBncnViKSwg bm90IGNvbXBpbGVkCmludG8gdGhlIFhlbiBiaW5hcnkuICBXaGV0aGVyIGNvbXBpbGluZyBzdWNo IHRoaW5ncyBpbnRvIHRoZSBiaW5hcnkKY29uc3RpdHV0ZXMgYSAiZGVyaXZlZCB3b3JrIiBpcyBz b21ldGhpbmcgeW91J2QgcHJvYmFibHkgYmV0dGVyIGFzayBhCmxhd3llci4gOi0pCgpJZiBjb25m aWd1cmluZyB0aGUgYm9vdGxvYWRlciB0byBwYXNzIGV4dHJhIGZpbGVzIHRvIFhlbiBpc24ndApz dWl0YWJsZSBvbiBBUk0gZm9yIHNvbWUgcmVhc29uIHdlIGNhbiBwcm9iYWJseSBjb21lIHVwIHdp dGggc29tZQpvdGhlciB3YXkgb2YgcGFja2FnaW5nIHRoaW5ncyB0b2dldGhlciB3aGljaCBob25v cnMgdGhlIEdQTCBzdWl0YWJseS4KCj4+Pj4gLi4uc29tZSBbdGhpbmdzIGNhbid0IGJlIGluY2x1 ZGVkIGluIGh5cGVydmlzb3JdIGJlY2F1c2Ugb2YgY29kZQo+Pj4+IHNpemUgb3IgY29tcGxleGl0 eS4KPj4KPj4gU29ycnksIGp1c3QgdG8gYmUgY2xlYXI6IGJlbG93IHlvdSBtZW50aW9uZWQgbW9k dWxlcyBhcyBhIHNvbHV0aW9uLCBhbmQKPj4gZ2l2ZW4gdGhlIGNvbnRleHQgdGhpcyB3b3VsZCBi ZSBpbmNsdWRlZC4gIFNvIGNhbiB5b3UgZXhwYW5kIG9uIHdoYXQgeW91Cj4+IG1lYW4gdGhhdCB0 aGVyZSBhcmUgdGhpbmdzIHRoYXQgMSkgY2FuJ3QgYmUgaW5jbHVkZWQgaW4gdGhlIGh5cGVydmlz b3IKPj4gYmVjYXVzZSBvZiBjb2RlIHNpemUgb3IgY29tcGxleGl0eSwgYnV0IGZvciB3aGljaCAy KSBsb2FkYWJsZSBtb2R1bGVzCj4+IHdvdWxkIGJlIGEgc3VpdGFibGUgc29sdXRpb24/Cj4gV2Vs bC4uLiBEZXZpY2UgZHJpdmVzPyBFbXVsYXRvcnM/IEZvciBleGFtcGxlLCBpZiBJIHdpbGwgd3Jp dGUgYnVuY2gKPiBvZiBnb29kIGFuZCBuZWF0IEdQTCBkcml2ZXJzIGZvciBzb21lIFNvQyBhbmQg SSdsbCBwcm9taXNlIHRvIG1haW50YWluCj4gdGhlbSwgd2lsbCB5b3UgaW5jbHVkZSB0aGVtIGlu dG8gdXBzdHJlYW0/Cj4gT3IgSSB3aWxsIHdyaXRlIGVtdWxhdG9yIGZvciBzb21lIGFyY2FuZSBk ZXZpY2UsIHdpbGwgaXQgYmUgbWVyZ2VkCj4gaW50byB1cHN0cmVhbT8KPiBSZWFsIGNhc2U6IEkg d2lsbCB3cml0ZSBPUC1URUUgbWVkaWF0b3IgZm9yIG9uZSBjbGllbnQgYW5kIEdvb2dsZQo+IFRy dXN0eSBtZWRpYXRvciBmb3Igb3RoZXIgY2xpZW50LiBFdmVyeSB3aWxsIGhhdmUsIHNheSwgMiww MDAgbGluZXMgb2YKPiBjb2RlLiBBcmUgdGhlcmUgY2hhbmdlcywgdGhhdCB0aGV5IGJvdGggd2ls bCBiZSBtZXJnZWQgaW50bwo+IGh5cGVydmlzb3I/Cgpbc25pcF0KCj4gQW55d2F5cywgSSBoYXZl IHRha2VuIHlvdXIgcG9pbnQuIE5vIHByb3ByaWV0YXJ5IGNvZGUgaW4gbW9kdWxlcy4gV2hhdAo+ IGFib3V0IG90aGVyIHBhcnRzIG9mIGRpc2N1c3Npb24/IEFyZSB5b3UgYWdhaW5zdCBsb2FkYWJs ZSBtb2R1bGVzIGluCj4gYW55IGZhc2hpb24/IFdoYXQgYWJvdXQgbmF0aXZlIGFwcHM/CgpUaGVy ZSBhcmUgc2V2ZXJhbCBkaWZmZXJlbnQgcXVlc3Rpb25zIHdlJ3JlIGdldHRpbmcgc2xpZ2h0bHkg bWl4ZWQgdXAgaGVyZToKMS4gU2hvdWxkIHNvbWUgYml0IG9mIGZ1bmN0aW9uYWxpdHkgKGxpa2Ug YSBURUUgbWVkaWF0b3Igb3IgZGV2aWNlCmVtdWxhdGlvbikgbGl2ZSBpbiB0aGUgeGVuLmdpdCB0 cmVlPwoyLiBTaG91bGQgdGhhdCBmdW5jdGlvbmFsaXR5IHJ1biBpbiB0aGUgaHlwZXJ2aXNvciBh ZGRyZXNzIHNwYWNlPwozLiBTaG91bGQgdGhhdCBmdW5jdGlvbmFsaXR5IGJlIGxvYWRlZCB2aWEg YSBsb2FkYWJsZSBtb2R1bGU/CjQuIFdoYXQgcGxhY2UgdG8gcHJvcHJpZXRhcnkgY29tcG9uZW50 cyBoYXZlIGluIGEgWGVuIHN5c3RlbT8KCkxldCBtZSBhZGRyZXNzICM0IGZpcnN0LiAgVGhlcmUg YXJlIGxvdHMgb2YgZXhhbXBsZXMgb2YgcHJvcHJpZXRhcnkKKmNvbXBvbmVudHMqIG9mIFhlbiBz eXN0ZW1zLiAgWGVuQ2xpZW50IHVzZWQgdG8gaGF2ZSBhIHByb3ByaWV0YXJ5CmRldmljZSBtb2Rl bCAoYSBwcm9jZXNzIHJ1bm5pbmcgaW4gZG9tMCkgZm9yIGhlbHBpbmcgdmlydHVhbGl6ZQpncmFw aGljcyBjYXJkczsgYSBudW1iZXIgb2YgY29tcGFuaWVzIGhhdmUgcHJvcHJpZXRhcnkgZHJpdmVy cyBmb3IKbWVtb3J5IHNoYXJpbmcgb3IgVk0gaW50cm9zcGVjdGlvbi4gIEJ1dCBhbGwgb2YgdGhv c2UgYXJlIG91dHNpZGUgb2YKdGhlIFhlbiBhZGRyZXNzIHNwYWNlLCBpbnRlcmFjdGluZyB3aXRo IFhlbiB2aWEgaHlwZXJjYWxscy4gIEFzIGxvbmcKYXMgIm5hdGl2ZSBhcHBzIiAoSSB0aGluayB3 ZSBwcm9iYWJseSBuZWVkIGEgYmV0dGVyIG5hbWUgaGVyZSkgYXJlCmFuYWxvZ291cyB0byBhIGRl dmljZW1vZGVsIHN0dWJkb21haW4gLS0gaW4gYSBzZXBhcmF0ZSBhZGRyZXNzIHNwYWNlCmFuZCBh Y3RpbmcgdGhyb3VnaCBhIHdlbGwtZGVmaW5lZCBoeXBlcmNhbCBpbnRlcmZhY2UgLS0gSSBkb24n dCBoYXZlCmFueSBvYmplY3Rpb24gdG8gaGF2aW5nIHByb3ByaWV0YXJ5IG9uZXMuCgpSZWdhcmRp bmcgIzEtMiwgbGV0IG1lIGZpcnN0IHNheSB0aGF0IGhvdyBzcGVjaWZpYyBpdCBpcyB0byBhCnBh cnRpY3VsYXIgcGxhdGZvcm0gb3IgdXNlIGNhc2UgaXNuJ3QgYWN0dWFsbHkgaW1wb3J0YW50IHRv IGFueSBvZgp0aGVzZSBxdWVzdGlvbnMuICBUaGUgY29uc2lkZXJhdGlvbnMgYXJlIHBhcnRseSB0 ZWNobmljYWwsIGFuZCBwYXJ0bHkKcHJhY3RpY2FsIC0tIGhvdyBtdWNoIGJlbmVmaXQgZG9lcyBp dCBnaXZlIHRvIHRoZSBwcm9qZWN0IGFzIGEgd2hvbGUKdnMgdGhlIGNvc3Q/CgpGb3IgYSBsb25n IHRpbWUgdGhlcmUgd2VyZSBvbmx5IHR3byBmdW5jdGlvbmFsIHNjaGVkdWxlcnMgaW4gWGVuIC0t CnRoZSBDcmVkaXQgc2NoZWR1bGVyIChub3cgY2FsbGVkICJjcmVkaXQxIiB0byBkaXN0aW5ndWlz aCBpdCBmcm9tCiJjcmVkaXQyIiksIGFuZCB0aGUgQVJJTkM2NTMgc2NoZWR1bGVyLCB3aGljaCBp cyBhIHJlYWwtdGltZSBzY2hlZHVsZXIKdGFyZ2V0ZWQgYXQgYSB2ZXJ5IHNwZWNpZmljIHVzZSBj YXNlIGFuZCBpbmR1c3RyeS4gIEFzIGZhciBhcyBJIGtub3cKdGhlcmUgaXMgb25seSBvbmUgdXNl ci4gIEJ1dCBpdCB3YXMgY2hlY2tlZCBpbnRvIHRoZSBYZW4gdHJlZSBiZWNhdXNlCml0IHdvdWxk IG9idmlvdXNseSBiZSB1c2VmdWwgdG8gdGhlbSAoYmVuZWZpdCkgYW5kIGFsbW9zdCBubyBpbXBh Y3Qgb24KYW55b25lIGVsc2UgKGNvc3QpOyBhbmQgaXQgcmFuIGluc2lkZSB0aGUgaHlwZXJ2aXNv ciBiZWNhdXNlIHRoYXQncwp0aGUgb25seSBwbGFjZSB0byBydW4gYSBzY2hlZHVsZXIuCgpTbyBn aXZlbiB5b3VyIGV4YW1wbGVzLCBJIHNlZSBubyByZWFzb24gbm90IHRvIGhhdmUgc2V2ZXJhbApp bXBsZW1lbnRhdGlvbnMgb2YgZGlmZmVyZW50IG1lZGlhdG9ycyBvciBlbXVsYXRlZCBkZXZpY2Vz IGluIHRyZWUsIG9yCmluIGEgWGVuUHJvamVjdC1tYW5hZ2VkIGdpdCByZXBvIChsaWtlIG1pbmkt b3MuZ2l0KS4gIEkgZG9uJ3Qga25vdyB0aGUKcGFydGljdWxhcnMgYWJvdXQgbWVkaWF0b3JzIG9y IHRoZSBkZXZpY2VzIHlvdSBoYXZlIGluIG1pbmQsIGJ1dCBpZgp5b3UgY2FuIHNob3cgdGVjaG5p Y2FsIHJlYXNvbnMgd2h5IHRoZXkgbmVlZCB0byBiZSBydW4gaW4gdGhlCmh5cGVydmlzb3IgcmF0 aGVyIHRoYW4gc29tZXdoZXJlIGVsc2UgKGZvciBwZXJmb3JtYW5jZSBvciBzZWN1cml0eQpzYWtl LCBmb3IgaW5zdGFuY2UpLCB0aGVyZSdzIG5vIHJlYXNvbiBpbiBwcmluY2lwbGUgbm90IHRvIGFk ZCB0aGVtIHRvCnRoZSBoeXBlcnZpc29yIGNvZGU7IGFuZCBpZiB0aGV5J3JlIGluIHRoZSBoeXBl cnZpc29yLCB0aGVuIHRoZXkKc2hvdWxkIGJlIGluIHhlbi5naXQuCgpSZWdhcmRpbmcgbW9kdWxl cyAoIzMpOiBUaGUgcHJvYmxlbSB0aGF0IGxvYWRhYmxlIG1vZHVsZXMgd2VyZQpwcmltYXJpbHkg aW50cm9kdWNlZCB0byBzb2x2ZSBpbiBMaW51eCB3YXNuJ3QgIkhvdyB0byBkZWFsIHdpdGgKcHJv cHJpZXRhcnkgZHJpdmVycyIsIG9yIGV2ZW4gImhvdyB0byBkZWFsIHdpdGggb3V0LW9mLXRyZWUg ZHJpdmVycyIuClRoZSBwcm9ibGVtIHdhcywgIkhvdyB0byB3ZSBhbGxvdyBzb2Z0d2FyZSBwcm92 aWRlcnMgdG8gMSkgaGF2ZSBhCnNpbmdsZSBrZXJuZWwgYmluYXJ5LCB3aGljaCAyKSBoYXMgZHJp dmVycyBmb3IgYWxsIHRoZSBkaWZmZXJlbnQKc3lzdGVtcyBvbiB3aGljaCBpdCBuZWVkcyB0byBy dW4sIGJ1dCAzKSBub3QgdGFrZSBhIG1hc3NpdmUgYW1vdW50IG9mCm1lbW9yeSBvciBzcGFjZSBv biBzeXN0ZW1zLCBnaXZlbiB0aGF0IGFueSBnaXZlbiBzeXN0ZW0gd2lsbCBub3QgbmVlZAp0aGUg dmFzdCBtYWpvcml0eSBvZiBkcml2ZXJzPyIKClN1cHBvc2UgaHlwb3RoZXRpY2FsbHkgdGhhdCB3 ZSBkZWNpZGVkIHRoYXQgdGhlIG1lZGlhdG9ycyB5b3UgZGVzY3JpYmUKbmVlZCB0byBydW4gaW4g dGhlIGh5cGVydmlzb3IuICBBcyBsb25nIGFzIEtjb25maWcgaXMgc3VmZmljaWVudCBmb3IKcGVv cGxlIHRvIGVuYWJsZSBvciBkaXNhYmxlIHdoYXQgdGhleSBuZWVkIHRvIG1ha2UgYSBmdW5jdGlv bmFsIGFuZAplZmZpY2llbnQgc3lzdGVtLCB0aGVuIHRoZXJlJ3Mgbm8gbmVlZCB0byBpbnRyb2R1 Y2UgbW9kdWxlcy4gIElmIHdlCnJlYWNoZWQgYSBwb2ludCB3aGVyZSBwZW9wbGUgd2FudGVkIGEg c2luZ2xlIGJpbmFyeSB0aGF0IGNvdWxkIGRvCmVpdGhlciBvciBPUC1URUUgbWVkaWF0b3Igb3Ig dGhlIEdvb2dsZSBtZWRpYXRvciwgb3IgYm90aCwgb3IgbmVpdGhlciwKYnV0IGRpZG4ndCB0byBp bmNsdWRlIGFsbCBvZiB0aGVtIGluIHRoZSBjb3JlIGJpbmFyeSAocGVyaGFwcyBiZWNhdXNlCm9m IG1lbW9yeSBjb25zdHJhaW50cyksIHRoZW4gbG9hZGFibGUgbW9kdWxlcyB3b3VsZCBiZSBhIGdv b2Qgc29sdXRpb24KdG8gY29uc2lkZXIuICBCdXQgZWl0aGVyIHdheSwgaWYgd2UgZGVjaWRlZCB0 aGV5IHNob3VsZCBydW4gaW4gdGhlCmh5cGVydmlzb3IsIHRoZW4gYWxsIHRoaW5ncyBiZWluZyBl cXVhbCBpdCB3b3VsZCBzdGlsbCBiZSBiZXR0ZXIgdG8KaGF2ZSBib3RoIGltcGxlbWVudGF0aW9u cyBpbi10cmVlLgoKVGhlcmUgYXJlIGEgY291cGxlIG9mIHJlYXNvbnMgZm9yIHRoZSBwdXNoLWJh Y2sgb24gbG9hZGFibGUgbW9kdWxlcy4KVGhlIGZpcnN0IGlzIHRoZSBleHRyYSBjb21wbGljYXRp b24gYW5kIGluZnJhc3RydWN0dXJlIGl0IGFkZHMuICBCdXQKdGhlIHNlY29uZCBpcyB0aGF0IHBl b3BsZSBoYXZlIGEgc3Ryb25nIHRlbXB0YXRpb24gdG8gdXNlIHRoZW0gZm9yCm91dC1vZi10cmVl IGFuZCBwcm9wcmlldGFyeSBjb2RlLCBib3RoIG9mIHdoaWNoIHdlJ2QgbGlrZSB0byBhdm9pZCBp Zgpwb3NzaWJsZS4gIElmIHRoZXJlIGNvbWVzIGEgcG9pbnQgaW4gdGltZSB3aGVyZSBsb2FkYWJs ZSBtb2R1bGVzIGFyZQp0aGUgb25seSByZWFzb25hYmxlIHNvbHV0aW9uIHRvIHRoZSBwcm9ibGVt LCBJIHdpbGwgc3VwcG9ydCBoYXZpbmcKdGhlbTsgYnV0IHVudGlsIHRoYXQgdGltZSBJIHdpbGwg bG9vayBmb3Igb3RoZXIgc29sdXRpb25zIGlmIEkgY2FuLgoKRG9lcyB0aGF0IG1ha2Ugc2Vuc2U/ CgpCVFcgSSd2ZSBiZWVuIHNheWluZyAiSSIgdGhyb3VnaG91dCB0aGlzIHJlc3BvbnNlOyBob3Bl ZnVsbHkgdGhhdAptYWtlcyBpdCBjbGVhciB0aGF0IEknbSBtYWlubHkgc3BlYWtpbmcgZm9yIG15 c2VsZiBoZXJlLgoKIC1HZW9yZ2UKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5v cmcKaHR0cHM6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=