From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: Re: [PATCH v9 0/7] KVM PCIe/MSI passthrough on ARM/ARM64: kernel part 3/3: vfio changes Date: Wed, 8 Jun 2016 15:06:09 -0600 Message-ID: <20160608150609.7e28d63d@ul30vt.home> References: <1462362858-2925-1-git-send-email-eric.auger@linaro.org> <573F34CA.5080308@linaro.org> <875b5791-f7c9-97ca-46de-4b1474fe65e0@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <875b5791-f7c9-97ca-46de-4b1474fe65e0-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Auger Eric Cc: julien.grall-5wv7dgnIgG8@public.gmane.org, eric.auger-qxv4g6HH51o@public.gmane.org, jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org, patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, marc.zyngier-5wv7dgnIgG8@public.gmane.org, p.fedin-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, pranav.sawargaonkar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org, christoffer.dall-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, yehuday-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org List-Id: iommu@lists.linux-foundation.org T24gV2VkLCA4IEp1biAyMDE2IDEwOjI5OjM1ICswMjAwCkF1Z2VyIEVyaWMgPGVyaWMuYXVnZXJA bGluYXJvLm9yZz4gd3JvdGU6Cgo+IERlYXIgYWxsLAo+IExlIDIwLzA1LzIwMTYgw6AgMTg6MDEs IEVyaWMgQXVnZXIgYSDDqWNyaXQgOgo+ID4gQWxleCwgUm9iaW4sCj4gPiAKPiA+IFdoaWxlIG15 IDMgcGFydCBzZXJpZXMgcHJpbWFyaWx5IGFkZHJlc3NlcyB0aGUgcHJvYmxlbWF0aWMgb2YgbWFw cGluZwo+ID4gTVNJIGRvb3JiZWxscyBpbnRvIGFybS1zbW11LCBpdCBmYWlscyBpbiA6Cj4gPiAK PiA+IDEpIGRldGVybWluaW5nIHdoZXRoZXIgdGhlIE1TSSBjb250cm9sbGVyIGlzIGRvd25zdHJl YW0gb3IgdXBzdHJlYW0gdG8KPiA+IHRoZSBJT01NVSwgIAo+ID4gCT0+IGluZGljYXRlcyB3aGV0 aGVyIHRoZSBNU0kgZG9vcmJlbGwgbXVzdCBiZSBtYXBwZWQKPiA+IAk9PiBwYXJ0aWNpcGF0ZXMg aW4gdGhlIGRlY2lzaW9uIGFib3V0IDIpICAKPiA+IAo+ID4gMikgZGV0ZXJtaW5pbmcgd2hldGhl ciBpdCBpcyBzYWZlIHRvIGFzc2lnbiBhIFBDSWUgZGV2aWNlLgo+ID4gCj4gPiBJIHRoaW5rIHdl IHNoYXJlIHRoaXMgdW5kZXJzdGFuZGluZyB3aXRoIFJvYmluLiBBbGwgYWJvdmUgb2YgY291cnNl Cj4gPiBzdGFuZHMgZm9yIEFSTS4KPiA+IAo+ID4gSSBnZXQgc3R1Y2sgd2l0aCB0aG9zZSAyIGlz c3VlcyBhbmQgSSBoYXZlIGZldyBxdWVzdGlvbnMgYWJvdXQgaW9tbXUKPiA+IGdyb3VwIHNldHVw LCBQQ0llLCBpb21tdSBkdC9BQ1BJIGRlc2NyaXB0aW9uLiBJIHdvdWxkIGJlIGdyYXRlZnVsIHRv IHlvdQo+ID4gaWYgeW91IGNvdWxkIGFuc3dlciBwYXJ0IG9mIHRob3NlIHF1ZXN0aW9ucyBhbmQg YWR2aXNlIGFib3V0IHRoZQo+ID4gc3RyYXRlZ3kgdG8gZml4IHRob3NlLiAgCj4gCj4gZ2VudGxl IHJlbWluZGVyIGFib3V0IHRoZSBxdWVzdGlvbnMgYmVsb3c7IGhvcGUgSSBkaWQgbm90IG1pc3Mg YW55IHJlcGx5Lgo+IElmIGFueWJvZHkgaGFzIHNvbWUgdGltZSB0byBzcGVudCBvbiB0aGlzIHRv cGljLi4uCj4gCj4gPiAKPiA+IEJlc3QgUmVnYXJkcwo+ID4gCj4gPiBFcmljCj4gPiAKPiA+IFFV RVNUSU9OUzoKPiA+IAo+ID4gMSkgUm9iaW4sIHlvdSBwb2ludGVkIHNvbWUgaG9zdCBjb250cm9s bGVycyB3aGljaCBhbHNvIGFyZSBNU0kKPiA+IGNvbnRyb2xsZXJzCj4gPiAoaHR0cDovL3RocmVh ZC5nbWFuZS5vcmcvZ21hbmUubGludXgua2VybmVsLnBjaS80NzE3NC9mb2N1cz00NzI2OCkuIElu Cj4gPiB0aGF0IGNhc2UgTVNJcyBuZXZlciByZWFjaCB0aGUgSU9NTVUuIEkgZmFpbGVkIGluIGZp bmRpbmcgYW55dGhpbmcgYWJvdXQKPiA+IE1TSXMgaW4gUENJZSBBQ1Mgc3BlYy4gV2hhdCBzaG91 bGQgYmUgdGhlIGlvbW11IGdyb3VwcyBpbiB0aGF0Cj4gPiBzaXR1YXRpb24uIElzbid0IHRoZSB1 cHN0cmVhbWVkIGNvZGUgYWJsZSB0byBzZWUgc29tZSBETUEgdHJhbnNmZXJzIGFyZQo+ID4gbm90 IHByb3Blcmx5IGlzb2xhdGVkIGFuZCBhbGlhcyBkZXZpY2VzIGluIHRoZSBzYW1lIGdyb3VwPyBB Y2NvcmRpbmcgdG8KPiA+IHlvdXIgc2VjdXJpdHkgd2FybmluZywgQWxleCwgSSB3b3VsZCB0aGlu ayB0aGUgY29kZSBkb2VzIG5vdCByZWNvZ25pemUKPiA+IGl0LCBjYW4geW91IGNvbmZpcm0gcGxl YXNlPyAgCj4gbXkgY3VycmVudCB1bmRlcnN0YW5kaW5nIGlzIGVuZCBwb2ludHMgd291bGQgYmUg aW4gc2VwYXJhdGUgZ3JvdXBzIChhc3N1bWluZwo+IEFDUyBzdXBwb3J0KSBhbHRob3VnaCBNU0kg Y29udHJvbGxlciBmcmFtZSBpcyBub3QgcHJvcGVybHkgcHJvdGVjdGVkLgoKV2UgZG9uJ3QgY3Vy cmVudGx5IGNvbnNpZGVyIE1TSSBkaWZmZXJlbnRseSBmcm9tIG90aGVyIERNQSBhbmQgd2UgZG9u J3QKY3VycmVudGx5IGhhdmUgYW55IHNvcnQgb2YgY29uY2VwdCBvZiBhIGRldmljZSB3aXRoaW4g dGhlIGludGVybWVkaWF0ZQpmYWJyaWMgYXMgYmVpbmcgYSBETUEgdGFyZ2V0LiAgV2UgZXhwZWN0 IGZhYnJpYyBkZXZpY2VzIHRvIG9ubHkgYmUKdHJhbnNhY3Rpb24gcm91dGVycy4gIFdlIHVzZSBB Q1MgdG8gZGV0ZXJtaW5lIHdoZXRoZXIgdGhlcmUncyBhbnkKcG9zc2liaWxpdHkgb2YgRE1BIGJl aW5nIHJlZGlyZWN0ZWQgYmVmb3JlIGl0IHJlYWNoZXMgdGhlIElPTU1VLCBidXQgaXQKc2VlbXMg dGhhdCBhIERNQSBiZWluZyBjb25zdW1lZCBieSBhbiBpbnRlcnJ1cHQgY29udHJvbGxlciBiZWZv cmUgaXQKcmVhY2hlcyB0aGUgSU9NTVUgd291bGQgYmUgYW5vdGhlciBjYXVzZSBmb3IgYW4gaXNv bGF0aW9uIGJyZWFjaC4KIAo+ID4gMikgY2FuIG90aGVyIFBDSWUgY29tcG9uZW50cyBiZSBNU0kg Y29udHJvbGxlcnM/CgpJJ20gbm90IGV2ZW4gZW50aXJlbHkgc3VyZSB3aGF0IHRoaXMgbWVhbnMu ICBXb3VsZCBhIERNQSB3cml0ZSBmcm9tIGFuCmVuZHBvaW50IHRhcmdldCB0aGUgTU1JTyBzcGFj ZSBvZiBhbiBpbnRlcm1lZGlhdGUsIGZhYnJpYyBkZXZpY2U/CiAKPiA+IDMpIEFtIEkgb2JsaWdl ZCB0byBjb25zaWRlciBhcmJpdHJhcnkgdG9wb2xvZ2llcyB3aGVyZSBhbiBNU0kgY29udHJvbGxl cgo+ID4gc3RhbmRzIGJldHdlZW4gdGhlIFBDSWUgaG9zdCBhbmQgdGhlIGlvbW11PyBpbiB0aGUg UENJZSBzcGFjZSBvcgo+ID4gcGxhdGZvcm0gc3BhY2U/IElmIHRoaXMgb25seSByZWxhdGVzIHRv IFBDSWUgY291bGRuJyBJIGNoZWNrIGlmIGFuIE1TSQo+ID4gY29udHJvbGxlciBleGlzdHMgaW4g dGhlIFBDSWUgdHJlZT8gIAo+IEluIG15IGxhc3Qgc2VyaWVzLCBJIGNvbnNpZGVyIHRoZSBhc3Np Z25tZW50IG9mIHBsYXRmb3JtIGRldmljZSB1bnNhZmUgYXMKPiBzb29uIGFzIHRoZXJlIGlzIGEg R0lDdjJtLiBUaGlzIGlzIGEgY2hhbmdlIGluIHRoZSB1c2VyIGV4cGVyaWVuY2UgY29tcGFyZWQg dG8KPiB3aGF0IHdlIGhhdmUgYmVmb3JlLgoKSWYgdGhlIE1TSSBjb250cm9sbGVyIGlzIGRvd25z dHJlYW0gb2Ygb3VyIERNQSB0cmFuc2xhdGlvbiwgaXQgZG9lc24ndApzZWVtIGxpa2Ugd2UgaGF2 ZSBtdWNoIGNob2ljZSBidXQgdG8gbWFyayBpdCB1bnNhZmUuICBUaGUgZW5kcG9pbnQgaXMKZnVs bHkgYWJsZSB0byBhdHRlbXB0IHRvIGV4cGxvaXQgaXQuCiAKPiA+IDQpIFJvYmluIHN1Z2dlc3Rl ZCBpbiBhIHByaXZhdGUgdGhyZWFkIHRvIGVudW1lcmF0ZSB0aHJvdWdoIGEgbGlzdCBvZgo+ID4g InJlZ2lzdGVyZWQiIGRvb3JiZWxscyBhbmQgaWYgYW55IGJlbG9uZ3MgdG8gYW4gdW5zYWZlIE1T SSBjb250cm9sbGVyLAo+ID4gY29uc2lkZXIgdGhlIGFzc2lnbm1lbnQgaXMgdW5zYWZlLiBUaGlz IHdvdWxkIGJlIGEgZmlyc3Qgc3RlcCBiZWZvcmUKPiA+IGRvaW5nIHNvbWV0aGluZyBtb3JlIGNv bXBsZXguIEFsZXgsIHdvdWxkIHRoYXQgYmUgYWNjZXB0YWJsZSB0byB5b3UgZm9yCj4gPiBpc3N1 ZSAjMj8gIAo+IEkgaW1wbGVtZW50ZWQgdGhpcyB0ZWNobmlxdWUgaW4gbXkgbGFzdCBzZXJpZXMg d2FpdGluZyBmb3IgbW9yZSBkaXNjdXNzaW9uCj4gb24gNCwgNS4KClNlZW1zIHN1ZmZpY2llbnQu ICBJIGRvbid0IG1pbmQgdGFraW5nIGEgYnJvYWQgc3dpbmcgdmVyc3VzIGFsbCB0aGUKZXh0cmEg Y29tcGxleGl0eSBvZiBkZWZpbmluZyB3aGljaCBkZXZpY2VzIGFyZSBzYWZlIHZzIHVuc2FmZS4K IAo+ID4gNSkgQWJvdXQgaXNzdWUgIzE6IGRvbid0IHdlIG1pc3MgdG9vbHMgaW4gZHQvQUNQSSB0 byBkZXNjcmliZSB0aGUKPiA+IGxvY2F0aW9uIG9mIHRoZSBpb21tdSBvbiBBUk0/IFRoaXMgaXMg bm90IG5lZWRlZCBvbiB4ODYgYmVjYXVzZQo+ID4gaXJxX3JlbWFwcGluZyBhbmQgSU9NTVUgYXJl IGF0IHRoZSBzYW1lIHBsYWNlIGJ1dCBteSB1bmRlcnN0YW5kaW5nIGlzCj4gPiB0aGF0IGl0IGlz IG9uIEFSTSB3aGVyZQo+ID4gLSB0aGVyZSBpcyBubyBjb25uZWN0aW9uIGJldHdlZW4gdGhlIE1T SSBjb250cm9sbGVyIC0gd2hpY2ggaW1wbGVtZW50cwo+ID4gaXJxIHJlbWFwcGluZyAtIGFuZCB0 aGUgaW9tbXUKPiA+IC0gTVNJIGFyZSBjb252ZXllZCBvbiB0aGUgc2FtZSBhZGRyZXNzIHNwYWNl IGFzIHN0YW5kYXJkIG1lbW9yeQo+ID4gdHJhbnNhY3Rpb25zLgoKSXQgc2VlbXMgcHJldHR5IGR1 YmlvdXMgdG8gbWUgdG8gaGF2ZSBmaXhlZCBhZGRyZXNzLCB1bnByb3RlY3RlZCBNU0kKY29udHJv bGxlcnMgc2l0dGluZyBpbiB0aGUgRE1BIHNwYWNlIG9mIGEgZGV2aWNlIGJlZm9yZSBJT01NVQp0 cmFuc2xhdGlvbi4gIFNlZW1zIGxpa2UgeW91IG5vdCBvbmx5IG5lZWQgdG8gbWFyayBpbnRlcnJ1 cHRzIGFzCnVuc2FmZSwgYnV0IGV4Y2x1ZGUgdGhlIGFkZHJlc3Mgc3BhY2Ugb2YgdGhlIE1TSSBj b250cm9sbGVyIGZyb20gdGhlCmF2YWlsYWJsZSBJT1ZBIHNwYWNlIHRvIHRoZSB1c2VyLgogCj4g PiA2KSAgY2FuJ3Qgd2UgbGl2ZSB3aXRoIGlvbW11L01TSSBjb250cm9sbGVyIHJlc3BlY3RpdmUg bG9jYXRpb24gdW5jZXJ0YWludHk/Cj4gPiAKPiA+IC0gaW4gbXkgY3VycmVudCBzZXJpZXMsIHdp dGggdGhlIGFib3ZlIFhpbGlueCBNU0kgY29udHJvbGxlciwgSSB3b3VsZAo+ID4gc2VlIHRoZXJl IGlzIGFuIGFybS1zbW11IHJlcXVpcmluZyBtYXBwaW5nIGJlaGluZCB0aGUgUENJIGhvc3QsIHdv dWxkCj4gPiBxdWVyeSB0aGUgY2hhcmFjdGVyaXN0aWNzIG9mIHRoZSBNU0kgZG9vcmJlbGwgKG5v dCBpbXBsZW1lbnRlZCBieSB0aGF0Cj4gPiBjb250cm9sbGVyKSwgc28gbm8gbWFwcGluZyB3b3Vs ZCBiZSBkb25lLiBTbyBpdCB3b3VsZCB3b3JrIEkgdGhpbmsuCj4gPiAtIEhvd2V2ZXIgaW4gY2Fz ZSB3ZSBoYXZlIHRoaXMgdG9wb2xvZ3k6IFBDSWUgaG9zdCAtPiBNU0kgY29udHJvbGxlcgo+ID4g Z2VuZXJhbGx5IHVzZWQgYmVoaW5kIGFuIElPTU1VIChzbyByZWdpc3RlcmluZyBhIGRvb3JiZWxs KSAtPiBJT01NVSwKPiA+IHRoaXMgd291bGRuJ3Qgd29yayBzaW5jZSB0aGUgZG9vcmJlbGwgd291 bGQgYmUgbWFwcGVkLiAgCgpJJ20gYSBsaXR0bGUgY29uZnVzZWQgd2hpY2ggZGlyZWN0aW9uICJi ZWhpbmQiIGlzIGhlcmUsIGJ1dCBpdCBzZWVtcwpsaWtlIGFueSB0aW1lIHRoZSBNU0kgY29udHJv bGxlciBsaXZlcyBpbiB0aGUgRE1BIGFkZHJlc3Mgc3BhY2Ugb2YgdGhlCmVuZHBvaW50LCBib3Ro IGludGVyZmVyaW5nIHdpdGggdGhlIGF2YWlsYWJsZSBJT1ZBIHNwYWNlIHRvIHRoZSB1c2VyCmFu ZCBwb3RlbnRpYWxseSBhbiBhdHRhY2sgdmVjdG9yIGZvciB0aGUgdXNlciwgd2UgbmVlZCB0byBj YWxsIGl0IG91dAphcyB1bnNhZmUuICBNYXliZSBzb21lIG9mIHRoZW0gYXJlIGZvciBleGNsdXNp dmUgdXNlIG9mIHRoZSBkZXZpY2UgYW5kCnRoZSBhdHRhY2sgdmVjdG9yIGlzIHJlbGF0aXZlbHkg Y29udGFpbmVkLCBidXQgdGhleSBzdGlsbCBhZmZlY3QgdGhlCklPVkEgc3BhY2Ugb2YgdGhlIHVz ZXIuICBTdWNoIGEgY29uZmlndXJhdGlvbiBtaWdodCBiZSBzYWZlLCBidXQgYXMgSQpzYWlkIEkn bSBub3Qgb3Bwb3NlZCB0byBiZWluZyBwcmV0dHkgbGliZXJhbCBpbiBhcHBseWluZyB0aGUgdW5z YWZlCnJlcXVpcmVtZW50IGlmIHRoZSBwbGF0Zm9ybSBoYXMgZG9uZSBzb21ldGhpbmcgdW5mcmll bmRseS4gIFRoYW5rcywKCkFsZXgKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRp b24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2lvbW11