From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [RFC] Support of non-indirect grant backend on 64KB guest Date: Thu, 20 Aug 2015 09:16:43 -0700 Message-ID: <55D5FD6B.1010604@citrix.com> References: <55D2D0C4.3070700@citrix.com> <55D2DA15.6070105@citrix.com> <55D37D31.9010401@citrix.com> <55D44338.8030108@citrix.com> <55D498B4.2030804@citrix.com> <55D49E1B.4010405@citrix.com> <55D5906C.7070907@citrix.com> <55D5A15C.80206@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <55D5A15C.80206@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: David Vrabel , =?UTF-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= , Stefano Stabellini Cc: Ian Campbell , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org CgpPbiAyMC8wOC8yMDE1IDAyOjQzLCBEYXZpZCBWcmFiZWwgd3JvdGU6Cj4gT24gMjAvMDgvMTUg MDk6MzEsIFJvZ2VyIFBhdSBNb25uw6kgd3JvdGU6Cj4+IEVsIDIwLzA4LzE1IGEgbGVzIDEuNDQs IFN0ZWZhbm8gU3RhYmVsbGluaSBoYSBlc2NyaXQ6Cj4+PiBPbiBXZWQsIDE5IEF1ZyAyMDE1LCBS b2dlciBQYXUgTW9ubsOpIHdyb3RlOgo+Pj4+IE15IG9waW5pb24gaXMgdGhhdCB3ZSBoYXZlIGFs cmVhZHkgbWVyZ2VkIHF1aXRlIGEgbG90IG9mIHRoaXMgbWVzcyBpbgo+Pj4+IG9yZGVyIHRvIHN1 cHBvcnQgZ3Vlc3RzIHdpdGggZGlmZmVyZW50IHBhZ2Ugc2l6ZXMuIEFuZCBpbiB0aGlzIGNhc2Us IHRoZQo+Pj4+IGFkZGl0aW9uIG9mIGNvZGUgY2FuIGJlIGRvbmUgdG8gYSB1c2Vyc3BhY2UgY29t cG9uZW50LCB3aGljaCBpcyBtdWNoCj4+Pj4gbGVzcyByaXNreSB0aGFuIGFkZGluZyBpdCB0byBi bGtmcm9udCwgYWxzbyB0YWtpbmcgaW50byBhY2NvdW50IHRoYXQKPj4+PiBpdCdzIGEgZ2VuZXJh bCBpbXByb3ZlbWVudCBmb3IgUWRpc2sgdGhhdCBvdGhlciBhcmNoZXMgY2FuIGFsc28gbGV2ZXJh Z2UuCj4+Pj4KPj4+PiBTbyBpbiBvbmUgaGFuZCB5b3UgYXJlIGFkZGluZyBjb2RlIHRvIGEga2Vy bmVsIGNvbXBvbmVudCwgdGhhdCBtYWtlcyB0aGUKPj4+PiBjb2RlIG11Y2ggbW9yZSBtZXNzeSBh bmQgY2FuIG9ubHkgYmUgbGV2ZXJhZ2VkIGJ5IEFSTS4gT24gdGhlIG90aGVyCj4+Pj4gaGFuZCwg eW91IGNhbiBhZGQgY29kZSBhIHVzZXItc3BhY2UgYmFja2VuZCwgYW5kIHRoYXQgY29kZSBpcyBh bHNvCj4+Pj4gYmVuZWZpY2lhbCBmb3Igb3RoZXIgYXJjaGVzLiBJTUhPLCB0aGUgZGVjaXNpb24g aXMgcXVpdGUgY2xlYXIuCj4+Pgo+Pj4gNjRLIHBhZ2VzIG5vdCB3b3JraW5nIGlzIGVudGlyZWx5 IGEgTGludXggcHJvYmxlbSwgbm90IGEgWGVuIHByb2JsZW0uCj4+PiBYZW4gdXNlcyA0SyBwYWdl cyBhcyB1c3VhbCBhbmQgZXhwb3J0cyB0aGUgc2FtZSA0SyBiYXNlZCBoeXBlcmNhbGwKPj4+IGlu dGVyZmFjZSBhcyB1c3VhbC4gVGhhdCBuZWVkcyB0byB3b3JrLCBubyBtYXR0ZXIgd2hhdCB0aGUg Z3Vlc3QgZGVjaWRlcwo+Pj4gdG8gcHV0IGluIGl0cyBvd24gcGFnZXRhYmxlcy4KPj4+Cj4+PiBJ IHJlbWluZCBldmVyeWJvZHkgdGhhdCBYZW4gaW50ZXJmYWNlcyBvbiBBUk0gYW5kIEFSTTY0IGFy ZSBmdWxseQo+Pj4gbWFpbnRhaW5lZCBmb3IgYmFja3dhcmQgY29tcGF0aWJpbGl0eS4gWGVuIGlz IG5vdCBmb3JjaW5nIExpbnV4IHRvIHVzZQo+Pj4gNjRLIHBhZ2VzLCB0aGF0J3MgZW50aXJlbHkg YSBMaW51eCBkZWNpc2lvbi4gVGhlIGlzc3VlIGhhcyBub3RoaW5nIHRvIGRvCj4+PiB3aXRoIFhl bi4KPj4+Cj4+PiBUaGUgYnVnIGhlcmUgaXMgdGhhdCBMaW51eCBoYXMgYnJva2VuIDY0SyBwYWdl cyBzdXBwb3J0IGFuZCB0aGF0IHNob3VsZAo+Pj4gYmUgZml4ZWQuIEkgZG9uJ3QgdGhpbmsgaXMg cmVhc29uYWJsZSB0byBtYWtlIGNoYW5nZXMgdG8gdGhlIFhlbiBBQklzCj4+PiBqdXN0IHRvIGFj Y29tbW9kYXRlIHRoZSBicm9rZW5uZXNzIG9mIG9uZSBndWVzdCBrZXJuZWwgaW4gYSBwYXJ0aWN1 bGFyCj4+PiBjb25maWd1cmF0aW9uLgo+Pgo+PiBJcyBpdCBhIGNoYW5nZSB0byB0aGUgQUJJIHRv IG1hbmRhdGUgaW5kaXJlY3QtZGVzY3JpcHRvcnMgc3VwcG9ydCBpbgo+PiBvcmRlciB0byBydW4g YXJtNjQgd2l0aCA2NEtCIGd1ZXN0cz8KPgo+IE5vIChnaXZlbiB0aGF0IHRoZXJlIGlzIG5vIGd1 ZXN0IHVzaW5nIDY0IEtpQiBndWVzdCBwYWdlcyB0aGF0IHdvcmtzIHlldCkuCgpJIG5lZWQgdG8g Y29ycmVjdCB5b3UgaGVyZSwgdGhlcmUgaXMgbm8gTGludXggZ3Vlc3RzIHVzaW5nIDY0S0IgcGFn ZSAKZ3JhbnVsYXJpdHkuIEl0J3MgcG9zc2libGUgdG8gY29tZSB1cCB3aXRoIGEgZ3Vlc3RzIHVz aW5nIDY0S0IgYW5kIAp3b3JraW5nIHdpdGggbm9uLWluZGlyZWN0IGdyYW50LgoKSXQncyBub3Qg ZWFzaWx5IHBvc3NpYmxlIHRvIGRvIGl0IGluIExpbnV4IGJlY2F1c2UgdGhlIGJsb2NrIGZyYW1l d29yayAKaXMgYWx3YXlzIHBhc3NpbmcgYSBMaW51eCBwYWdlIHNpemUgKGkuZSA0S0Igb3IgNjRL QikuIFNvIHdlIGFyZSAKZXhwb3NpbmcgYnJva2VuIExpbnV4IFBWIGRyaXZlcnMvaW50ZXJmYWNl IHRvIHRoZSBiYWNrZW5kLgoKPj4gSU1ITywgaXQgaXMgbm90LCBhbmQgbm9uZSBvZiB0aGUgcHJv cG9zZWQgc29sdXRpb25zIChlaXRoZXIgY2hhbmdlCj4+IGJsa2Zyb250IG9yIFFkaXNrKSBpbmNs dWRlIGFueSBjaGFuZ2UgdG8gdGhlIFhlbiBBQkkuIEluIHRoaXMgY2FzZSBteQo+PiBwcmVmZXJl bmNlIHdvdWxkIGJlIHRvIHBlcmZvcm0gdGhlIGNoYW5nZSBpbiB0aGUgYmFja2VuZCBmb3IgdGhl IHJlYXNvbnMKPj4gZGV0YWlsZWQgYWJvdmUuCj4+Cj4+IEFueXdheSwgSSdtIG5vdCBnb2luZyB0 byBibG9jayBzdWNoIGEgY2hhbmdlLCBJIGp1c3QgdGhpbmsgdGhlcmUgYXJlCj4+IHRlY2huaWNh bGx5IGJldHRlciB3YXlzIHRvIHNvbHZlIHRoaXMgaXNzdWUuCj4KPiBJJ20gYWxyZWFkeSB1bmhh cHB5IGFib3V0IHRoZSBjb21wbGV4aXR5IG9mIHRoZSBzdG9wLWdhcCBzdXBwb3J0IGZvciA2NAo+ IEtpQiBndWVzdCBwYWdlcyBpbiBMaW51eCBhbmQgaWYgdGhlcmUncyBhIHdheSB0byBnZXQgaXQg d29ya2luZyBieQo+IGFkZGluZyBhIHVzZWZ1bCBtaXNzaW5nIGZlYXR1cmUgdG8gcWVtdSdzIGRp c2sgYmFja2VuZCB0aGVuIHRoYXQgaXMgd2hhdAo+IHNob3VsZCBiZSBkb25lLgoKSSdkIGxpa2Ug dG8gcmVtaW5kIHlvdSB0aGF0IGFzc3VtaW5nIHRoYXQgTGludXggYW5kIFhlbiB3YXMgdXNpbmcg dGhlIApzYW1lIHBhZ2Ugc2l6ZSB3YXMgd3JvbmcuIFRoZXJlIGlzIG5vdGhpbmcgaW4gdGhlIFhl biBpbnRlcmZhY2UgCnJlcXVpcmluZyBhIHN1Y2ggdGhpbmdzLiBTbyB3ZSBvdWdodCB0byBkbyBp dCBhdCBzb21lIHBvaW50IGdpdmVuIHRoYXQgCkFSTSBpcyBub3QgdGhlIG9ubHkgYXJjaGl0ZWN0 dXJlIHN1cHBvcnRpbmcgMiBkaWZmZXJlbnQgcGFnZSBzaXplLgoKUmVnYXJkcywKCi0tIApKdWxp ZW4gR3JhbGwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Clhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cDovL2xp c3RzLnhlbi5vcmcveGVuLWRldmVsCg==