From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [RFC v3]Proposal to allow setting up shared memory areas between VMs from xl config file Date: Fri, 21 Jul 2017 11:05:09 +0100 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dYUo7-0000YI-7I for xen-devel@lists.xenproject.org; Fri, 21 Jul 2017 10:05:15 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Stefano Stabellini , Zhongze Liu Cc: "Edgar E. Iglesias" , Wei Liu , Ian Jackson , edgari@xilinx.com, xen-devel@lists.xenproject.org, Jarvis Roach List-Id: xen-devel@lists.xenproject.org SGksCgpPbiAxOS8wNy8xNyAxOTo0NywgU3RlZmFubyBTdGFiZWxsaW5pIHdyb3RlOgo+IE9uIFdl ZCwgMTkgSnVsIDIwMTcsIFpob25nemUgTGl1IHdyb3RlOgo+PiA9PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Cj4+IDEuIE1vdGl2YXRpb24gYW5kIERl c2NyaXB0aW9uCj4+ID09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT0KPj4gVmlydHVhbCBtYWNoaW5lcyB1c2UgZ3JhbnQgdGFibGUgaHlwZXJjYWxscyB0 byBzZXR1cCBhIHNoYXJlIHBhZ2UgZm9yCj4+IGludGVyLVZNcyBjb21tdW5pY2F0aW9ucy4gVGhl c2UgaHlwZXJjYWxscyBhcmUgdXNlZCBieSBhbGwgUFYKPj4gcHJvdG9jb2xzIHRvZGF5LiBIb3dl dmVyLCB2ZXJ5IHNpbXBsZSBndWVzdHMsIHN1Y2ggYXMgYmFyZW1ldGFsCj4+IGFwcGxpY2F0aW9u cywgbWlnaHQgbm90IGhhdmUgdGhlIGluZnJhc3RydWN0dXJlIHRvIGhhbmRsZSB0aGUgZ3JhbnQg dGFibGUuCj4+IFRoaXMgcHJvamVjdCBpcyBhYm91dCBzZXR0aW5nIHVwIHNldmVyYWwgc2hhcmVk IG1lbW9yeSBhcmVhcyBmb3IgaW50ZXItVk1zCj4+IGNvbW11bmljYXRpb25zIGRpcmVjdGx5IGZy b20gdGhlIFZNIGNvbmZpZyBmaWxlLgo+PiBTbyB0aGF0IHRoZSBndWVzdCBrZXJuZWwgZG9lc24n dCBoYXZlIHRvIGhhdmUgZ3JhbnQgdGFibGUgc3VwcG9ydCAoaW4gdGhlCj4+IGVtYmVkZGVkIHNw YWNlLCB0aGlzIGlzIG5vdCB1bnVzdWFsKSB0byBiZSBhYmxlIHRvIGNvbW11bmljYXRlIHdpdGgK Pj4gb3RoZXIgZ3Vlc3RzLgo+Pgo+PiA9PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09Cj4+IDIuIEltcGxlbWVudGF0aW9uIFBsYW46Cj4+ID09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KPj4KPj4gPT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KPj4gMi4xIEludHJvZHVjZSBhIG5ldyBW TSBjb25maWcgb3B0aW9uIGluIHhsOgo+PiA9PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PQo+Pgo+PiAyLjEuMSBEZXNpZ24gR29hbHMKPj4gfn5+fn5+fn5+fn5+fn5+fn5+fn5+ fn5+fn5+Cj4+Cj4+IFRoZSBzaGFyZWQgYXJlYXMgc2hvdWxkIGJlIHNoYXJlYWJsZSBhbW9uZyBz ZXZlcmFsICg+PTIpIFZNcywgc28gZXZlcnkgc2hhcmVkCj4+IHBoeXNpY2FsIG1lbW9yeSBhcmVh IGlzIGFzc2lnbmVkIHRvIGEgc2V0IG9mIFZNcy4gVGhlcmVmb3JlLCBhIOKAnHRva2Vu4oCdIG9y Cj4+IOKAnGlkZW50aWZpZXLigJ0gc2hvdWxkIGJlIHVzZWQgaGVyZSB0byB1bmlxdWVseSBpZGVu dGlmeSBhIGJhY2tpbmcgbWVtb3J5IGFyZWEuCj4+IEEgc3RyaW5nIG5vIGxvbmdlciB0aGFuIDEy OCBieXRlcyBpcyB1c2VkIGhlcmUgdG8gc2VydmUgdGhlIHB1cnBvc2UuCj4+Cj4+IFRoZSBiYWNr aW5nIGFyZWEgd291bGQgYmUgdGFrZW4gZnJvbSBvbmUgZG9tYWluLCB3aGljaCB3ZSB3aWxsIHJl Z2FyZAo+PiBhcyB0aGUgIm1hc3RlciBkb21haW4iLCBhbmQgdGhpcyBkb21haW4gc2hvdWxkIGJl IGNyZWF0ZWQgcHJpb3IgdG8gYW55Cj4+IG90aGVyICJzbGF2ZSBkb21haW4icy4gQWdhaW4sIHdl IGhhdmUgdG8gdXNlIHNvbWUga2luZCBvZiB0YWcgdG8gdGVsbCB3aG8KPj4gaXMgdGhlICJtYXN0 ZXIgZG9tYWluIi4KPj4KPj4gQW5kIHRoZSBhYmlsaXR5IHRvIHNwZWNpZnkgdGhlIHBlcm1pc3Np b25zIGFuZCBjYWNoZWFiaWxpdHkgKGFuZCBzaGFyZWFiaWxpdHkKPj4gZm9yIGFybSBIVk0ncykg b2YgdGhlIHBhZ2VzIHRvIGJlIHNoYXJlZCBzaG91bGQgYmUgYWxzbyBnaXZlbiB0byB0aGUgdXNl ci4KPj4KPj4gMi4yLjIgU3ludGF4IGFuZCBCZWhhdmlvcgo+PiB+fn5+fn5+fn5+fn5+fn5+fn5+ fn5+fn5+fn5+fgo+PiBUaGUgZm9sbG93aW5nIGV4YW1wbGUgaWxsdXN0cmF0ZXMgdGhlIHN5bnRh eCBvZiB0aGUgcHJvcG9zZWQgY29uZmlnIGVudHJ5Ogo+Pgo+PiBJbiB4bCBjb25maWcgZmlsZSBv ZiB2bTE6Cj4+Cj4+ICAgIHN0YXRpY19zaG0gPSBbICdpZD1JRDEsIGJlZ2luPTB4MTAwMDAwLCBl bmQ9MHgyMDAwMDAsIHJvbGU9bWFzdGVyLAo+PiAgICAgICAgICAgICAgICAgICAgYXJtX3NoYXJl YXR0cj1pbm5lciwgYXJtX2lubmVyX2NhY2hlYXR0cj13YiwKPj4gICAgICAgICAgICAgICAgICAg IGFybV9vdXRlcl9jYWNoZWF0dHI9d2IsIHg4Nl9jYWNoZWF0dHI9d2IsIHByb3Q9cm8nLAo+Pgo+ PiAgICAgICAgICAgICAgICAgICAgJ2lkPUlEMiwgYmVnaW49MHgzMDAwMDAsIGVuZD0weDQwMDAw MCwgcm9sZT1tYXN0ZXIsCj4+ICAgICAgICAgICAgICAgICAgICBhcm1fc2hhcmVhdHRyPWlubmVy LCBhcm1faW5uZXJfY2FjaGVhdHRyPXdiLAo+PiAgICAgICAgICAgICAgICAgICAgYXJtX291dGVy X2NhY2hlYXR0cj13YiwgeDg2X2NhY2hlYXR0cj13YiwgcHJvdD1ydycgXQo+Cj4gUHJvYmFibHkg bm90IGEgZ29vZCBpZGVhIHRvIG1peCB4ODYgYW5kIGFybSBhdHRyaWJ1dGVzIGluIHRoZSBleGFt cGxlIDotKQo+IEp1c3QgbWFrZSBhIGNvdXBsZSBvZiBleGFtcGxlcyBpbnN0ZWFkLgo+Cj4KPj4g SW4geGwgY29uZmlnIGZpbGUgb2Ygdm0yOgo+Pgo+PiAgICAgc3RhdGljX3NobSA9IFsgJ2lkPUlE MSwgYmVnaW49MHg1MDAwMDAsIGVuZD0weDYwMDAwMCwgcm9sZT1zbGF2ZSwgcHJvdD1ybycgXQo+ Pgo+PiBJbiB4bCBjb25maWcgZmlsZSBvZiB2bTM6Cj4+Cj4+ICAgICBzdGF0aWNfc2htID0gWyAn aWQ9SUQyLCBiZWdpbj0weDcwMDAwMCwgZW5kPTB4ODAwMDAwLCByb2xlPXNsYXZlLCBwcm90PXJv JyBdCj4+Cj4+IHdoZXJlOgo+PiAgIEBpZCAgICAgICAgICAgICAgICAgICBjYW4gYmUgYW55IHN0 cmluZyB0aGF0IG1hdGNoZXMgdGhlIHJlZ2V4cCAiW14gXHRcbixdKyIKPj4gICAgICAgICAgICAg ICAgICAgICAgICAgYW5kIG5vIGxvZ25lciB0aGFuIDEyOCBjaGFyYWN0ZXJzCj4+ICAgQGJlZ2lu L2VuZCAgICAgICAgICAgIGNhbiBiZSBkZWNpbWFscyBvciBoZXhpZGVtaWNhbHMgb2YgdGhlIGZv cm0gIjB4MjAwMDAiLgo+PiAgIEByb2xlICAgICAgICAgICAgICAgICBjYW4gb25seSBiZSAnbWFz dGVyJyBvciAnc2xhdmUnCj4+ICAgQHByb3QgICAgICAgICAgICAgICAgIGNhbiBiZSAnbicsICdy JywgJ3JvJywgJ3cnLCAnd28nLCAneCcsICd4bycsICdydycsICdyeCcsCj4+ICAgICAgICAgICAg ICAgICAgICAgICAgICd3eCcgb3IgJ3J3eCcuIERlZmF1bHQgaXMgJ3J3Jy4KPj4gICBAYXJtX3No YXJlYXR0ciAgICAgICAgY2FuIGJlICdpbm5lcicgb3VyICdvdXR0ZXInLCB0aGlzIHdpbGwgYmUg aWdub3JlZCBhbmQKPj4gICAgICAgICAgICAgICAgICAgICAgICAgYSB3YXJuaW5nIHdpbGwgYmUg cHJpbnRlZCBvdXQgdG8gdGhlIHNjcmVlbiBpZiBpdAo+PiAgICAgICAgICAgICAgICAgICAgICAg ICBpcyBzcGVjaWZpZWQgaW4gYW4geDg2IEhWTSBjb25maWcgZmlsZS4KPj4gICAgICAgICAgICAg ICAgICAgICAgICAgRGVmYXVsdCBpcyAnaW5uZXInCj4+ICAgQGFybV9vdXRlcl9jYWNoZWF0dHIg IGNhbiBiZSAndWMnLCAnd3QnLCAnd2InLCAnYnVmZmVyYWJsZScgb3IgJ3dhJywgdGhpcyB3aWxs Cj4+ICAgICAgICAgICAgICAgICAgICAgICAgIGJlIGlnbm9yZWQgYW5kIGEgd2FybmluZyB3aWxs IGJlIHByaW50ZWQgb3V0IHRvIHRoZQo+PiAgICAgICAgICAgICAgICAgICAgICAgICBzY3JlZW4g aWYgaXQgaXMgc3BlY2lmaWVkIGluIGFuIHg4NiBIVk0gY29uZmlnIGZpbGUuCj4+ICAgICAgICAg ICAgICAgICAgICAgICAgIERlZmF1bHQgaXMgJ2lubmVyJwo+PiAgIEBhcm1faW5uZXJfY2FjaGVh dHRyICBjYW4gYmUgJ3VjJywgJ3d0JywgJ3diJywgJ2J1ZmZlcmFibGUnIG9yICd3YScuIERlZmF1 bHQKPj4gICAgICAgICAgICAgICAgICAgICAgICAgaXMgJ3diJy4KPgo+IEkgZG9uJ3QgdGhpbmsg d2UgbmVlZCBib3RoIEBhcm1fb3V0ZXJfY2FjaGVhdHRyIGFuZAo+IEBhcm1faW5uZXJfY2FjaGVh dHRyOiBhIHNpbmdsZSBAYXJtX2NhY2hlYXR0ciBzaG91bGQgc3VmZmljZS4KCkluIHRoYXQgY2Fz ZSwgeW91IGRvbid0IHdhbnQgdG8gcHJvdmlkZSBzaGFyZWF0dHIgYXMgdGhleSBhcmUgYm90aCB0 aWdodCAKdG9nZXRoZXIuIEZvciBpbnN0YW5jZSB3aGF0IHlvdSBjYWxsIGJ1ZmZlcmFibGUgaXMg bm9uLWNhY2hlYWJsZSBtZW1vcnkgCmFuZCB0aGUgcmVzdWx0YW50IHNob3VsZCBhbHdheXMgYmUg b3V0ZXIgc2hhcmVhYmxlLgoKPgo+IEFsc28sIHdlIG5lZWQgdG8gZXhwbGFpbiB3aGF0IGVhY2gg b2YgdGhlc2UgdmFsdWVzIG1lYW4uIEluc3RlYWQsIEkKPiB3b3VsZCBvbmx5IHNheSB0aGF0IHRv ZGF5IHdlIG9ubHkgc3VwcG9ydCB3cml0ZS1iYWNrOgo+Cj4gQGFybV9jYWNoZWF0dHIgIE9ubHkg J3diJyAod3JpdGUtYmFjaykgaXMgc3VwcG9ydGVkIHRvZGF5Lgo+Cj4gSW4gdGhlIGNvZGUgSSB3 b3VsZCBjaGVjayB0aGF0IGFybV9jYWNoZWF0dHIgaXMgZWl0aGVyIG1pc3NpbmcsIG9yIHNldAo+ IHRvICd3YicuIFRocm93IGFuIGVycm9yIGluIGFsbCBvdGhlciBjYXNlcy4KPgo+Cj4+ICAgQHg4 Nl9jYWNoZWF0dHIgICAgICAgIGNhbiBiZSAndWMnLCAnd2MnLCAnd3QnLCAnd3AnLCAnd2InIG9y ICdzdWMnLiBEZWZhdWx0Cj4+ICAgICAgICAgICAgICAgICAgICAgICAgIGlzICd3YicuCj4KPiBB bHNvIGhlcmUsIEkgd291bGQgd3JpdGU6Cj4KPiBAeDg2X2NhY2hlYXR0ciAgT25seSAnd2InICh3 cml0ZS1iYWNrKSBpcyBzdXBwb3J0ZWQgdG9kYXkuCj4KPiBMaWtlIHlvdSB3cm90ZSBsYXRlciwg YmVnaW4gYW5kIGVuZCBhZGRyZXNzZXMgbmVlZCB0byBiZSBtdWx0aXBsZSBvZiA0Sy4KClRoaXMg aXMgbm90IHRydWUuIFRoZSBhZGRyZXNzZXMgc2hvdWxkIGJlIGEgbXVsdGlwbGUgb2YgdGhlIGh5 cGVydmlzb3IgCnBhZ2UgZ3JhbnVsYXJpdHkuCgpJIHdpbGwgbm90IGJlIHBvc3NpYmxlIHRvIG1h cCBhIDRLIGNodW5rIGluIHN0YWdlLTIgd2hlbiB0aGUgaHlwZXJ2aXNvciAKaXMgdXNpbmcgMTZL IG9yIDY0SyBwYWdlIGdyYW51bGFyaXR5LgoKQ2hlZXJzLAoKLS0gCkp1bGllbiBHcmFsbAoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1h aWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcv eGVuLWRldmVsCg==