From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [RFC v2]Proposal to allow setting up shared memory areas between VMs from xl config file Date: Fri, 23 Jun 2017 21:18:39 +0100 Message-ID: <53253778-a432-2039-3bdf-8520300aeddc@arm.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" 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 1dOV2U-0001UA-Ez for xen-devel@lists.xenproject.org; Fri, 23 Jun 2017 20:18:46 +0000 In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Stefano Stabellini Cc: "Edgar E. Iglesias" , Wei Liu , Zhongze Liu , Ian Jackson , edgari@xilinx.com, xen-devel@lists.xenproject.org, Jarvis Roach List-Id: xen-devel@lists.xenproject.org SGkgU3RlZmFubywKCk9uIDA2LzIzLzIwMTcgMDc6MjEgUE0sIFN0ZWZhbm8gU3RhYmVsbGluaSB3 cm90ZToKPiBPbiBGcmksIDIzIEp1biAyMDE3LCBKdWxpZW4gR3JhbGwgd3JvdGU6Cj4+IEhpLAo+ Pgo+PiBPbiAyMi8wNi8xNyAyMjowNSwgU3RlZmFubyBTdGFiZWxsaW5pIHdyb3RlOgo+Pj4+IFdo ZW4gd2UgZW5jb3VudGVyIGFuIGlkIElEeCBkdXJpbmcgInhsIGNyZWF0ZSI6Cj4+Pj4KPj4+PiAg ICArIElmIGl04oCZcyBub3QgdW5kZXIgL2xvY2FsL3NoYXJlZF9tZW06Cj4+Pj4gICAgICArIElm IHRoZSBjb3JyZXNwb25kaW5nIGVudHJ5IGhhcyBhICJtYXN0ZXIiIHRhZywgY3JlYXRlIHRoZQo+ Pj4+ICAgICAgICBjb3JyZXNwb25kaW5nIGVudHJpZXMgZm9yIElEeCBpbiB4ZW5zdG9yZQo+Pj4+ ICAgICAgKyBJZiB0aGVyZSBpc24ndCBhICJtYXN0ZXIiIHRhZywgc2F5IGVycm9yLgo+Pj4+Cj4+ Pj4gICAgKyBJZiBpdOKAmXMgZm91bmQgdW5kZXIgL2xvY2FsL3NoYXJlZF9tZW06Cj4+Pj4gICAg ICArIElmIHRoZSBjb3JyZXNwb25kaW5nIGVudHJ5IGhhcyBhICJtYXN0ZXIiIHRhZywgc2F5IGVy cm9yCj4+Pj4gICAgICArIElmIHRoZXJlIGlzbid0IGEgIm1hc3RlciIgdGFnLCBtYXAgdGhlIHBh Z2VzIHRvIHRoZSBuZXdseQo+Pj4+ICAgICAgICBjcmVhdGVkIGRvbWFpbiwgYW5kIGFkZCB0aGUg Y3VycmVudCBkb21haW4gYW5kIG5lY2Vzc2FyeSBpbmZvcm1hdGlvbgo+Pj4+ICAgICAgICB1bmRl ciAvbG9jYWwvc2hhcmVkX21lbS9JRHgvc2xhdmVzLgo+Pj4KPj4+IEFzaWRlIGZyb20gdXNpbmcg ImdmbiIgaW5zdGVhZCBvZiBnbWZuIGV2ZXJ5d2hlcmUsIEkgdGhpbmsgaXQgbG9va3MKPj4+IHBy ZXR0eSBnb29kLgo+Pj4KPj4+IEkgd291bGQgbGVhdmUgb3V0IHBlcm1pc3Npb25zIGFuZCBjYWNo ZWFiaWxpdHkgYXR0cmlidXRlcyBmcm9tIHRoaXMKPj4+IHZlcnNpb24gb2YgdGhlIHdvcmsuIEkg d291bGQganVzdCBhZGQgYSBub3RlIHNheWluZyB0aGF0IG1lbW9yeSB3aWxsIGJlCj4+PiBtYXBw ZWQgYXMgUlcgcmVndWxhciBjYWNoZWFibGUgUkFNLiBPdGhlciBwZXJtaXNzaW9ucyBhbmQgY2Fj aGVhYmlsaXR5Cj4+PiB3aWxsIGJlIHBvc3NpYmxlLCBidXQgdGhleSBhcmUgbm90IGltcGxlbWVu dGVkIHlldC4KPj4KPj4gV2VsbCwgSSB0aGluayB3ZSBzaG91bGQgZGVzaWduIHRoZSBpbnRlcmZh Y2UgY29ycmVjdGx5IGZyb20gdGhlIGJlZ2lubmluZyB0bwo+PiBmYWNpbGl0YXRlIGZ1dHVyZSBl eHRlbnNpb24uCj4gCj4gV2hpY2ggaW50ZXJmYWNlIGFyZSB5b3Ugc3BlYWtpbmcgYWJvdXQ/CgpU aGUgaW50ZXJmYWNlIHdpdGggdGhlIHVzZXIsIGkuZSBsaWJ4bCBhbmQgeGwuIFRoZSBoeXBlcmNh bGwgY2FuIGJlIAphZGRlZCBsYXRlciBpZiBuZWNlc3NhcnkgYXMgdGhpcyBjb3VsZCBiZSBhIERP TUNUTCBzbyBub3QgcGFydCBvZiBhIApzdGFibGUgQUJJLgoKPiAKPiBJIGRvbid0IHRoaW5rIHdl IHNob3VsZCBhdHRlbXAgdG8gd3JpdGUgaG93IHRoZSBoeXBlcmNhbGwgaW50ZXJmYWNlCj4gbWln aHQgbG9vayBsaWtlIGluIHRoZSBmdXR1cmUgdG8gc3VwcG9ydCBzZXR0aW5nIHBlcm1pc3Npb25z IGFuZAo+IGNhY2hlYWJpbGl0eSBhdHRyaWJ1dGVzLgo+IAo+IAo+PiBBbHNvLCB5b3UgbmVlZCB0 byBjbGFyaWZ5IHdoYXQgeW91IG1lYW4gYnkgInJlZ3VsYXIgY2FjaGVhYmxlIFJBTSIuIEFyZSB0 aGV5Cj4+IHdyaXRlLXRocm91Z2gsIHdyaXRlLWJhY2suLi4/IEJ1dCwgb24gQVJNLCB0aGlzIHdv dWxkIG9ubHkgYmUgdGhlIGNhY2hpbmcKPj4gYXR0cmlidXRlIGluIHN0YWdlLTIgcGFnZSB0YWJs ZS4gVGhlIGZpbmFsIGNhY2hpbmcsIG1lbW9yeSB0eXBlLCBzaGFyZWFiaWxpdHkKPj4gd291bGQg YmUgYSBjb21iaW5hdGlvbiBvZiBzdGFnZS0yIGFuZCBzdGFnZS0xIGF0dHJpYnV0ZXMuCj4gCj4g VGhlIHZlcnkgc2FtZSB0aGF0IGlzIHVzZWQgdG9kYXkgZm9yIHRoZSByYW0gb2YgdmlydHVhbCBt YWNoaW5lcywgZG8gd2UKPiBuZWVkIHRvIHNheSBhbnkgbW9yZSB0aGFuIHRoYXQ/IChGb3IgQVJN LCBwMm1fcmFtX3J3IGFuZCBNQVRUUl9NRU0sCj4gTFBBRV9TSF9JTk5FUi4gRm9yIHN0YWdlMSwg d2Ugc2hvdWxkIHJlZmVyIHRvCj4geGVuL2luY2x1ZGUvcHVibGljL2FyY2gtYXJtLmguKQoKICAq IEFsbCBtZW1vcnkgd2hpY2ggaXMgc2hhcmVkIHdpdGggb3RoZXIgZW50aXRpZXMgaW4gdGhlIHN5 c3RlbQogICogKGluY2x1ZGluZyB0aGUgaHlwZXJ2aXNvciBhbmQgb3RoZXIgZ3Vlc3RzKSBtdXN0 IHJlc2lkZSBpbiBtZW1vcnkKICAqIHdoaWNoIGlzIG1hcHBlZCBhcyBOb3JtYWwgSW5uZXItY2Fj aGVhYmxlLiBUaGlzIGFwcGxpZXMgdG86CiAgKiAgLSBoeXBlcmNhbGwgYXJndW1lbnRzIHBhc3Nl ZCB2aWEgYSBwb2ludGVyIHRvIGd1ZXN0IG1lbW9yeS4KICAqICAtIG1lbW9yeSBzaGFyZWQgdmlh IHRoZSBncmFudCB0YWJsZSBtZWNoYW5pc20gKGluY2x1ZGluZyBQViBJL08KICAqICAgIHJpbmdz IGV0YykuCiAgKiAgLSBtZW1vcnkgc2hhcmVkIHdpdGggdGhlIGh5cGVydmlzb3IgKHN0cnVjdCBz aGFyZWRfaW5mbywgc3RydWN0CiAgKgogICogQW55IElubmVyIGNhY2hlIGFsbG9jYXRpb24gc3Ry YXRlZ3kgKFdyaXRlLUJhY2ssIFdyaXRlLVRocm91Z2ggZXRjKQogICogaXMgYWNjZXB0YWJsZS4g VGhlcmUgaXMgbm8gcmVzdHJpY3Rpb24gb24gdGhlIE91dGVyLWNhY2hlYWJpbGl0eS4KClRoaXMg ZG9lcyBub3QgaW5jbHVkZSBtZW1vcnkgc2hhcmVkIGJldHdlZW4gZ3Vlc3QgdmlhIG90aGVyIG1l dGhvZCB0aGFuIApncmFudC10YWJsZS4gU28gdGhlIGRvY3VtZW50YXRpb24gc2hvdWxkIGJlIGF0 IGxlYXN0IHVwZGF0ZWQuCgpCdXQgQUZBSUNULCB0aGlzIGRvZXMgbm90IHNheSBhbnl0aGluZyBh Ym91dCB0aGUgc2hhcmVhYmlsaXR5IG9mIHRoZSAKcmVnaW9uLiBJdCBvbmx5IHNwZWFrcyBhYm91 dCBvdXRlci1jYWNoZSBhbmQgaW5uZXItY2FjaGUuCgpDaGVlcnMsCgotLSAKSnVsaWVuIEdyYWxs CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2 ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVu Lm9yZy94ZW4tZGV2ZWwK