From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Pau Monn? Subject: Re: [early RFC] ARM PCI Passthrough design document Date: Wed, 15 Mar 2017 17:00:50 +0000 Message-ID: <20170315170050.6lzgzdhnwagep333@dhcp-3-128.uk.xensource.com> References: <20170310002934.GA29177@localhost.localdomain> <20170310032318.sfja3vqjg5u3j4ew@MacBook-Pro-de-Roger.local> <20170310152843.GH15705@char.us.oracle.com> <20170315120728.vwnjq4aykfgtq2yv@dhcp-3-128.uk.xensource.com> <20170315124201.GE28643@localhost.localdomain> <20170315125650.h6uozbqbrxpgsech@dhcp-3-128.uk.xensource.com> <20170315151135.GA8164@vbusired-lt> <20170315163839.rd7bh2ho5wun7s67@dhcp-3-128.uk.xensource.com> <20170315165400.GA7956@vbusired-lt> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1coCIO-0003Vj-M3 for xen-devel@lists.xenproject.org; Wed, 15 Mar 2017 17:01:08 +0000 Content-Disposition: inline In-Reply-To: <20170315165400.GA7956@vbusired-lt> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Venu Busireddy Cc: "Edgar Iglesias (edgar.iglesias@xilinx.com)" , Stefano Stabellini , Wei Chen , Steve Capper , Andrew Cooper , Jiandi An , Julien Grall , Punit Agrawal , Campbell Sean , xen-devel , alistair.francis@xilinx.com, "manish.jaggi@caviumnetworks.com" , Shanker Donthineni List-Id: xen-devel@lists.xenproject.org T24gV2VkLCBNYXIgMTUsIDIwMTcgYXQgMTE6NTQ6MDdBTSAtMDUwMCwgVmVudSBCdXNpcmVkZHkg d3JvdGU6Cj4gT24gV2VkLCBNYXIgMTUsIDIwMTcgYXQgMDQ6Mzg6MzlQTSArMDAwMCwgUm9nZXIg UGF1IE1vbm4/IHdyb3RlOgo+ID4gT24gV2VkLCBNYXIgMTUsIDIwMTcgYXQgMTA6MTE6MzVBTSAt MDUwMCwgVmVudSBCdXNpcmVkZHkgd3JvdGU6Cj4gPiA+IE9uIFdlZCwgTWFyIDE1LCAyMDE3IGF0 IDEyOjU2OjUwUE0gKzAwMDAsIFJvZ2VyIFBhdSBNb25uPyB3cm90ZToKPiA+ID4gPiBPbiBXZWQs IE1hciAxNSwgMjAxNyBhdCAwODo0MjowNEFNIC0wNDAwLCBLb25yYWQgUnplc3p1dGVrIFdpbGsg d3JvdGU6Cj4gPiA+ID4gPiBPbiBXZWQsIE1hciAxNSwgMjAxNyBhdCAxMjowNzoyOFBNICswMDAw LCBSb2dlciBQYXUgTW9ubj8gd3JvdGU6Cj4gPiA+ID4gPiA+IE9uIEZyaSwgTWFyIDEwLCAyMDE3 IGF0IDEwOjI4OjQzQU0gLTA1MDAsIEtvbnJhZCBSemVzenV0ZWsgV2lsayB3cm90ZToKPiA+ID4g PiA+ID4gPiBPbiBGcmksIE1hciAxMCwgMjAxNyBhdCAxMjoyMzoxOFBNICswOTAwLCBSb2dlciBQ YXUgTW9ubj8gd3JvdGU6Cj4gPiA+ID4gPiA+ID4gPiBPbiBUaHUsIE1hciAwOSwgMjAxNyBhdCAw NzoyOTozNFBNIC0wNTAwLCBLb25yYWQgUnplc3p1dGVrIFdpbGsgd3JvdGU6Cj4gPiA+ID4gPiA+ ID4gPiA+IE9uIFRodSwgTWFyIDA5LCAyMDE3IGF0IDAxOjI2OjQ1UE0gKzAwMDAsIEp1bGllbiBH cmFsbCB3cm90ZToKPiA+ID4gPiA+ID4gPiA+ID4gPiBIaSBLb25yYWQsCj4gPiA+ID4gPiA+ID4g PiA+ID4gCj4gPiA+ID4gPiA+ID4gPiA+ID4gT24gMDkvMDMvMTcgMTE6MTcsIEtvbnJhZCBSemVz enV0ZWsgV2lsayB3cm90ZToKPiA+ID4gPiA+ID4gPiA+ID4gPiA+IE9uIFRodSwgTWFyIDA5LCAy MDE3IGF0IDExOjU5OjUxQU0gKzA5MDAsIFJvZ2VyIFBhdSBNb25uPyB3cm90ZToKPiA+ID4gPiA+ ID4gPiA+ID4gPiA+ID4gT24gV2VkLCBNYXIgMDgsIDIwMTcgYXQgMDI6MTI6MDlQTSAtMDUwMCwg S29ucmFkIFJ6ZXN6dXRlayBXaWxrIHdyb3RlOgo+ID4gPiA+ID4gPiA+ID4gPiA+ID4gPiA+IE9u IFdlZCwgTWFyIDA4LCAyMDE3IGF0IDA3OjA2OjIzUE0gKzAwMDAsIEp1bGllbiBHcmFsbCB3cm90 ZToKPiA+ID4gPiA+ID4gPiA+ID4gPiA+ID4gPiAuLiB0aGlzIGFzIGZvciBTUi1JT1YgZGV2aWNl cyB5b3UgbmVlZCB0aGUgZHJpdmVycyB0byBraWNrIHRoZSBoYXJkd2FyZQo+ID4gPiA+ID4gPiA+ ID4gPiA+ID4gPiA+IHRvIGdlbmVyYXRlIHRoZSBuZXcgYnVzIGFkZHJlc3Nlcy4gQW5kIHRob3Nl IChhbG9uZyB3aXRoIHRoZSBCQVIgcmVnaW9ucykgYXJlCj4gPiA+ID4gPiA+ID4gPiA+ID4gPiA+ ID4gbm90IHZpc2libGUgaW4gQUNQSSAodGhleSBhcmUgY29uc3RydWN0dWVkIGR5bmFtaWNhbGx5 KS4KPiA+ID4gPiA+ID4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gPiA+ID4gPiA+IFRoZXJl J3MgYWxyZWFkeSBjb2RlIGluIFhlbiBbMF0gdG8gZmluZCBvdXQgdGhlIHNpemUgb2YgdGhlIEJB UnMgb2YgU1ItSU9WCj4gPiA+ID4gPiA+ID4gPiA+ID4gPiA+IGRldmljZXMsIGJ1dCBJJ20gbm90 IHN1cmUgd2hhdCdzIHRoZSBpbnRlbmRlZCB1c2FnZSBvZiB0aGF0LCBkb2VzIGl0IG5lZWQgdG8K PiA+ID4gPiA+ID4gPiA+ID4gPiA+ID4gaGFwcGVuIF9hZnRlcl8gdGhlIGRyaXZlciBpbiBEb20w IGhhcyBkb25lIHdoYXRldmVyIG1hZ2ljIGZvciB0aGlzIHRvIHdvcms/Cj4gPiA+ID4gPiA+ID4g PiA+ID4gPiAKPiA+ID4gPiA+ID4gPiA+ID4gPiA+IFllcy4gVGhpcyBpcyBjYWxsZWQgdmlhIHRo ZSBQSFlTREVWT1BfcGNpX2RldmljZV9hZGQgaHlwZXJjYWxsIHdoZW4KPiA+ID4gPiA+ID4gPiA+ ID4gPiA+IHRoZSBkZXZpY2UgZHJpdmVyIGluIGRvbTAgaGFzIGZpbmlzaGVkICJjcmVhdGluZyIg dGhlIFZGLiBTZWUgZHJpdmVycy94ZW4vcGNpLmMKPiA+ID4gPiA+ID4gPiA+ID4gPiAKPiA+ID4g PiA+ID4gPiA+ID4gPiBXZSBhcmUgdGhpbmtpbmcgdG8gbm90IHVzZSBQSFlTREVWT1BfcGNpX2Rl dmljZV9hZGQgaHlwZXJjYWxsIGZvciBBUk0gYW5kIGRvCj4gPiA+ID4gPiA+ID4gPiA+ID4gdGhl IFBDSSBzY2FubmluZyBpbiBYZW4uCj4gPiA+ID4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4g PiA+ID4gSWYgSSB1bmRlcnN0YW5kIGNvcnJlY3RseSB3aGF0IHlvdSBzYWlkLCBvbmx5IHRoZSBQ Q0kgZHJpdmVyIHdpbGwgYmUgYWJsZSB0bwo+ID4gPiA+ID4gPiA+ID4gPiA+IGtpY2sgU1ItSU9W IGRldmljZSBhbmQgWGVuIHdvdWxkIG5vdCBiZSBhYmxlIHRvIGRldGVjdCB0aGUgZGV2aWNlIHVu dGlsIGl0Cj4gPiA+ID4gPiA+ID4gPiA+ID4gaGFzIGJlZW4gZnVsbHkgY29uZmlndXJlZC4gU28g aXQgd291bGQgbWVhbiB0aGF0IHdlIGhhdmUgdG8ga2VlcAo+ID4gPiA+ID4gPiA+ID4gPiA+IFBI WVNERVZPUF9wY2lfZGV2aWNlX2FkZCBhcm91bmQgdG8ga25vdyB3aGVuIFhlbiBjYW4gdXNlIHRo ZSBkZXZpY2UuCj4gPiA+ID4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gPiA+ID4gQW0gSSBj b3JyZWN0Pwo+ID4gPiA+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gPiA+ID4gWWVzLiBVbmxlc3Mg dGhlIFBDSSBkcml2ZXJzIGNvbWUgdXAgd2l0aCBzb21lIG90aGVyIHdheSB0byB0ZWxsIHRoZQo+ ID4gPiA+ID4gPiA+ID4gPiBPUyB0aGF0IG9oLCBoZXksIHRoZXJlIGlzIHRoaXMgbmV3IFBDSSBk ZXZpY2Ugd2l0aCB0aGlzIEJERi4KPiA+ID4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gPiA+ IE9yIHRoZSB1bmRlcmxheWluZyBidXMgb24gQVJNIGNhbiBzZW5kIHNvbWUgJ25ldyBkZXZpY2Un IGluZm9ybWF0aW9uPwo+ID4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gPiBIbSwgaXMgdGhp cyBzb21ldGhpbmcgc3RhbmRhcmQgYmV0d2VlbiBhbGwgdGhlIFNSLUlPViBpbXBsZW1lbnRhdGlv bnMsIG9yIGVhY2gKPiA+ID4gPiA+ID4gPiA+IHZlbmRvcnMgaGF2ZSB0aGVpciBvd24gc2F1Y2U/ Cj4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gR29zaCwgYWxsIG9mIHRoZW0gaGF2ZSB0aGVp ciBvd24gc2F1Y2UuIFRoZSBvbmx5IHRoaW5nIHRoYXQgaXMgdGhlIHNhbWUKPiA+ID4gPiA+ID4g PiBpcyB0aGF0IHN1ZGRlbmx5IGJlaGluZCB0aGUgUEYgZGV2aWNlIHRoZXJlIGFyZSBQQ0kgZGV2 aWVzIHRoYXQgYXJlIHJlc3BvbmRpbmcKPiA+ID4gPiA+ID4gPiB0byAweGNmYyByZXF1ZXN0cy4g TUFnaWMhCj4gPiA+ID4gPiA+IAo+ID4gPiA+ID4gPiBJJ20gcmVhZGluZyB0aGUgUENJIFNSLUlP ViAxLjEgc3BlYywgYW5kIEkgdGhpbmsgd2UgZG9uJ3QgbmVlZCB0byB3YWl0IGZvciB0aGUKPiA+ ID4gPiA+ID4gZGV2aWNlIGRyaXZlciBpbiBEb20wIGluIG9yZGVyIHRvIGdldCB0aGUgaW5mb3Jt YXRpb24gb2YgdGhlIFZGIGRldmljZXMsIHdoYXQKPiA+ID4gPiA+ID4gWGVuIGNhcmVzIGFib3V0 IGlzIHRoZSBwb3NpdGlvbiBvZiB0aGUgQkFScyAoc28gdGhhdCB0aGV5IGNhbiBiZSBtYXBwZWQg aW50bwo+ID4gPiA+ID4gPiBEb20wIGF0IGJvb3QpLCBhbmQgdGhlIFBDSSBTQkRGIG9mIGVhY2gg UEYvVkYsIHNvIHRoYXQgWGVuIGNhbiB0cmFwIGFjY2Vzc2VzIHRvCj4gPiA+ID4gPiA+IGl0Lgo+ ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gQUZBSUNUIGJvdGggb2YgdGhpcyBjYW4gYmUgb2J0YWlu ZWQgd2l0aG91dCBhbnkgZHJpdmVyLXNwZWNpZmljIGNvZGUsIHNpbmNlCj4gPiA+ID4gPiA+IGl0 J3MgYWxsIGNvbnRhaW5lZCBpbiB0aGUgUENJIFNSLUlPViBzcGVjIChidXQgbWF5YmUgSSdtIG1p c3Npbmcgc29tZXRoaW5nKS4KPiA+ID4gPiA+IAo+ID4gPiA+ID4gQ0MtaW5nIFZlbnUsCj4gPiA+ ID4gPiAKPiA+ID4gPiA+IFJvZ2VyLCBjb3VsZCB5b3UgcG9pbnQgb3V0IHdoaWNoIG9mIHRoZSBj aGFwdGVycyBoYXMgdGhpcz8KPiA+ID4gPiAKPiA+ID4gPiBUaGlzIHdvdWxkIGJlIGNoYXB0ZXIg MiAoIkluaXRpYWxpemF0aW9uIGFuZCBSZXNvdXJjZSBBbGxvY2F0aW9uIiksIGFuZCB0aGVuCj4g PiA+ID4gdGhlcmUncyBhICJJTVBMRU1FTlRBVElPTiBOT1RFIiB0aGF0IHNob3dzIGhvdyB0aGUg UEYvVkYgYXJlIG1hdGNoZWQgdG8KPiA+ID4gPiBmdW5jdGlvbiBudW1iZXJzIGluIHBhZ2UgNDUg KEkgaGF2ZSB0aGUgZm9sbG93aW5nIGNvcHksIHdoaWNoIGlzIHRoZSBsYXRlc3QKPiA+ID4gPiBy ZXZpc2lvbjogIlNpbmdsZSBSb290IEkvTyBWaXJ0dWFsaXphdGlvbiBhbmQgU2hhcmluZyBTcGVj aWZpY2F0aW9uIFJldmlzaW9uCj4gPiA+ID4gMS4xIiBmcm9tIEphbnVhcnkgMjAgMjAxMCBbMF0p Lgo+ID4gPiA+IAo+ID4gPiA+IFRoZSBkb2N1bWVudCBpcyBxdWl0ZSBjb21wbGV4LCBidXQgaXQg aXMgYSBzdGFuZGFyZCB0aGF0IGFsbCBTUi1JT1YgZGV2aWNlcwo+ID4gPiA+IHNob3VsZCBmb2xs b3cgc28gQUZBSUNUIFhlbiBzaG91bGQgYmUgYWJsZSB0byBnZXQgYWxsIHRoZSBpbmZvcm1hdGlv biB0aGF0IGl0Cj4gPiA+ID4gbmVlZHMgZnJvbSB0aGUgUENJIGNvbmZpZyBzcGFjZSBpbiBvcmRl ciB0byBkZXRlY3QgdGhlIFBGL1ZGIEJBUnMgYW5kIHRoZSBCREYKPiA+ID4gPiBkZXZpY2UgYWRk cmVzc2VzLgo+ID4gPiA+IAo+ID4gPiA+IFJvZ2VyLgo+ID4gPiA+IAo+ID4gPiA+IFswXSBodHRw czovL21lbWJlcnMucGNpc2lnLmNvbS93Zy9QQ0ktU0lHL2RvY3VtZW50L2Rvd25sb2FkLzgyMzgK PiA+ID4gCj4gPiA+IEkgZG8gbm90IGhhdmUgYWNjZXNzIHRvIHRoaXMgZG9jdW1lbnQsIHNvIEkg aGF2ZSB0byByZWx5IG9uIFJldiAxLjAKPiA+ID4gZG9jdW1lbnQsIGJ1dCBJIGRvbid0IHRoaW5r IHRoaXMgYXNwZWN0IG9mIHRoZSBzcGVjIGNoYW5nZWQgbXVjaC4KPiA+ID4gCj4gPiA+IEluIGFu eSBjYXNlLCBJIGFtIGFmcmFpZCBJIGFtIG5vdCBzZWVpbmcgdGhlIG92ZXJhbGwgcGljdHVyZSwg YnV0IEkKPiA+ID4gd291bGQgbGlrZSB0byBjb21tZW50IG9uIHRoZSBsYXN0IHBhcnQgb2YgdGhp cyBkaXNjdXNzaW9uLiBJbmRlZWQsIHRoZQo+ID4gPiBjb25maWd1cmF0aW9uIHNwYWNlIChpbmNs dWRpbmcgdGhlIFNSLUlPViBleHRlbmRlZCBjYXBhYmlsaXR5KSBjb250YWlucwo+ID4gPiBhbGwg dGhlIGluZm9ybWF0aW9uLCBidXQgb25seSB0aGUgaW5mb3JtYXRpb24gbmVjZXNzYXJ5IGZvciB0 aGUgT1MgdG8KPiA+ID4gImVudW1lcmF0ZSIgdGhlIGRldmljZSAoUEYgYXMgd2VsbCBhcyBWRnMp LiBUaGUgYnVzIGFuZCBkZXZpY2UgbnVtYmVyCj4gPiA+IChTQkRGKSBhc3NpZ25tZW50LCBhbmQg cHJvZ3JhbW1pbmcgb2YgdGhlIEJBUnMsIGFyZSBhbGwgZG9uZSBkdXJpbmcgdGhhdAo+ID4gPiBl bnVtZXJhdGlvbi4gSW4gdGhpcyBkaXNjdXNzaW9uLCB3aGljaCBlbnRpdHkgaXMgZG9pbmcgdGhl IGVudW1lcmF0aW9uPwo+ID4gPiBYZW4sIG9yIERvbTA/Cj4gPiAKPiA+IFhlbiBuZWVkcyB0byBs ZXQgRG9tMCBtYW5hZ2UgdGhlIGRldmljZSwgYnV0IGF0IHRoZSBzYW1lIHRpbWUgaXQgbmVlZHMg dG8KPiA+IGNvcnJlY3RseSBtYXAgdGhlIGRldmljZSBCQVJzIGludG8gRG9tMCBwaHlzbWFwLiBJ IHRoaW5rIHRoZSBlYXNpZXN0IHNvbHV0aW9uCj4gPiBpcyB0byBsZXQgRG9tMCBtYW5hZ2UgdGhl IGRldmljZSwgYW5kIFhlbiBzaG91bGQgc2V0dXAgYSB0cmFwIHRvIGRldGVjdCBEb20wCj4gPiBz ZXR0aW5nIHRoZSBWRiBFbmFibGUgYml0IChiaXQgMCBpbiBTUi1JT1YgQ29udHJvbCAoMDhoKSks IGF0IHdoaWNoIHBvaW50IFhlbgo+ID4gd2lsbCBzaXplIHRoZSBWRiBCQVJzIChhbmQgbWFwIHRo ZW0gaW50byBEb20wKSBhbmQgYWxzbyBlbnVtZXJhdGUgdGhlIFZGCj4gPiBkZXZpY2VzLgo+IAo+ IFRoZXJlIHdhcyBhIHNlY29uZCBwYXJ0IGluIG15IGVhcmxpZXIgZW1haWwuIENvcGllZCBiZWxv dzoKPiAKPiAiSWYgWGVuIHdhaXRzIHVudGlsIERvbTAgZW51bWVyYXRlZCB0aGUgZGV2aWNlLCB0 aGVuIHRoZSBCQVIgcG9zaXRpb25zCj4gYXJlIGFscmVhZHkgd2l0aGluIHRoZSBEb20wJ3MgbWVt b3J5IHNwYWNlISBObyBmdXJ0aGVyIG1hcHBpbmcgaXMgbmVlZGVkLAo+IHJpZ2h0PyIKPiAKPiBB cyBJIGFza2VkLCBpZiBEb20wIGVudW1lcmF0ZXMgdGhlIGRldmljZSBhbmQgcHJvZ3JhbXMgdGhl IEJBUnMsIHRoZSBCQVIKPiByZWdpb25zIGFyZSBhbHJlYWR5IGluIERvbTAncyBwaHlzaWNhbCBt ZW1vcnkhIFdoYXQgZnVydGhlciBtYXBwaW5nIGlzCj4gbmVlZGVkPyBXaGF0IGFtIEkgbWlzc2lu Zz8KCk5vLCB0aGF0J3Mgbm90IHRydWUuIFhlbiBpcyB0aGUgb25lIHRoYXQgcGVyZm9ybXMgdGhl IG1hcHBpbmcgaW50byBEb20wIHBoeXNtYXAKb24gUFZIIChhbmQgQVJNKSwgc28gdW5sZXNzIFhl biBoYXMgbWFwcGVkIHRob3NlIEJBUnMgaW50byBEb20wLCBEb20wIGRvZXNuJ3QKaGF2ZSBhY2Nl c3MgdG8gdGhlIEJBUnMgYXQgYWxsLiBIZW5jZSBJIHRoaW5rIFhlbiBzaG91bGQgZGV0ZWN0IERv bTAgc2V0dGluZwp0aGUgVkYgRW5hYmxlIGJpdCwgcHJvcGVybHkgc2l6ZSB0aGUgVkYgQkFScyBh bmQgbWFwIHRoZW0gaW50byBEb20wLgoKUm9nZXIuCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBs aXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK