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Tue, 8 Jun 2021 08:55:28 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Vy3LoGl3ZLKr for ; Tue, 8 Jun 2021 08:55:27 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.17.10]) by smtp2.osuosl.org (Postfix) with ESMTPS id 05FF340109 for ; Tue, 8 Jun 2021 08:55:26 +0000 (UTC) Received: from [192.168.1.155] ([77.7.0.189]) by mrelayeu.kundenserver.de (mreue106 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MqJZl-1l3PJU3uj5-00nR3j; Tue, 08 Jun 2021 10:55:04 +0200 Subject: Re: [RFC] /dev/ioasid uAPI proposal To: Jason Wang , Jason Gunthorpe References: <20210602120111.5e5bcf93.alex.williamson@redhat.com> <20210602180925.GH1002214@nvidia.com> <20210602130053.615db578.alex.williamson@redhat.com> <20210602195404.GI1002214@nvidia.com> <20210602143734.72fb4fa4.alex.williamson@redhat.com> <6a9426d7-ed55-e006-9c4c-6b7c78142e39@redhat.com> <20210603130927.GZ1002214@nvidia.com> <65614634-1db4-7119-1a90-64ba5c6e9042@redhat.com> <20210604115805.GG1002214@nvidia.com> <895671cc-5ef8-bc1a-734c-e9e2fdf03652@redhat.com> <20210607141424.GF1002214@nvidia.com> <1cf9651a-b8ee-11f1-1f70-db3492a76400@redhat.com> From: "Enrico Weigelt, metux IT consult" Message-ID: <9a5b6675-e21a-cf62-6ea1-66c07e73e3ae@metux.net> Date: Tue, 8 Jun 2021 10:54:59 +0200 User-Agent: Mozilla/5.0 (X11; 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charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gMDguMDYuMjEgMDM6MDAsIEphc29uIFdhbmcgd3JvdGU6CgpIaSBmb2xrcywKCj4gSnVzdCB0 byBtYWtlIHN1cmUgd2UgYXJlIGluIHRoZSBzYW1lIHBhZ2UuIFdoYXQgSSBtZWFudCBpcywgaWYg dGhlIERNQSAKPiBiZWhhdmlvciBsaWtlIChuby1zbm9vcCkgaXMgZGV2aWNlIHNwZWNpZmljLiBU aGVyZSdzIG5vIG5lZWQgdG8gbWFuZGF0ZSAKPiBhIHZpcnRpbyBnZW5lcmFsIGF0dHJpYnV0ZXMu IFdlIGNhbiBkZXNjcmliZSBpdCBwZXIgZGV2aWNlLiBUaGUgZGV2aWNlcyAKPiBpbXBsZW1lbnRl ZCBpbiB0aGUgY3VycmVudCBzcGVjIGRvZXMgbm90IHVzZSBub24tY29oZXJlbnQgRE1BIGRvZXNu J3QgCj4gbWVhbiBhbnkgZnV0dXJlIGRldmljZXMgd29uJ3QgZG8gdGhhdC4gVGhlIGRyaXZlciBj b3VsZCBjaG9vc2UgdG8gdXNlIAo+IHRyYW5zcG9ydCAoZS5nIFBDSSksIHBsYXRmb3JtIChBQ1BJ KSBvciBkZXZpY2Ugc3BlY2lmaWMgKGdlbmVyYWwgdmlydGlvIAo+IGNvbW1hbmQpIHdheSB0byBk ZXRlY3QgYW5kIGZsdXNoIGNhY2hlIHdoZW4gbmVjZXNzYXJ5LgoKTWF5YmUgSSd2ZSB0b3RhbGx5 IG1pc3VuZGVyc3Rvb2QgdGhlIHdob2xlIGlzc3VlLCBidXQgd2hhdCBJJ3ZlIGxlYXJuZWQKdG8g ZmFyOgoKKiBpdCdzIGEgcGVyZm9ybWFuY2UgaW1wcm92ZW1lbnQgZm9yIGNlcnRhaW4gc2NlbmFy aW9zCiogd2hldGhlciBpdCBjYW4gYmUgdXNlZCBkZXBlbmRzIG9uIHRoZSBkZXZpY2VzIGFzIHdl bGwgYXMgdGhlCiAgIHVuZGVybHlpbmcgdHJhbnNwb3J0IChjb21iaW5hdGlvbiBvZiBib3RoKQoq IHdoZXRoZXIgaXQgc2hvdWxkIGJlIHVzZWQgKHdoZW4gcG9zc2libGUpIGNhbiBvbmx5IGJlIGRl Y2lkZWQgYnkgdGhlCiAgIGRyaXZlcgoKQ29ycmVjdCA/CgpJIHRlbmQgdG8gYmVsaWV2ZSB0aGF0 J3Mgc29tZXRoaW5nIHRoYXQgdmlydGlvIGluZnJhc3RydWN0dXJlIHNob3VsZApoYW5kbGUgaW4g YSBnZW5lcmljIHdheS4KCk1heWJlIHRoZSBkZXZpY2UgYXMgd2VsbCBhcyB0aGUgdHJhbnNwb3J0 IGNvdWxkIGFubm91bmNlIHRoZWlyCmNhcGFiaWxpdHkgKHdoaWNoIElNSE8gc2hvdWxkIGdvIHZp YSB0aGUgdmlydGlvIHByb3RvY29sKSwgYW5kIGlmIGJvdGgKYXJlIGNhcGFibGUsIHRoZSAoZ3Vl c3QncykgdmlydGlvIHN1YnN5cyB0ZWxscyB0aGUgZHJpdmVyIHdoZXRoZXIgaXQncwp1c2FibGUg Zm9yIGEgc3BlY2lmaWMgZGV2aWNlLiBQZXJoYXBzIHdlIHNob3VsZCBhbHNvIGhhdmUgYSBtZWNo YW5pc20KdG8gdGVsbCB0aGUgZGV2aWNlIHRoYXQgaXQncyBhY3R1YWxseSB1c2VkLgoKClNvcnJ5 LCBpZiBpJ20gY29tcGxldGVseSBvbiB0aGUgd3JvbmcgcGFnZSBhbmQganVzdCB0YWxraW5nIGp1 bmsgaGVyZSA6bwoKCi0tbXR4CgotLSAKLS0tCkhpbndlaXM6IHVudmVyc2NobMO8c3NlbHRlIEUt TWFpbHMga8O2bm5lbiBsZWljaHQgYWJnZWjDtnJ0IHVuZCBtYW5pcHVsaWVydAp3ZXJkZW4gISBG w7xyIGVpbmUgdmVydHJhdWxpY2hlIEtvbW11bmlrYXRpb24gc2VuZGVuIFNpZSBiaXR0ZSBpaHJl bgpHUEcvUEdQLVNjaGzDvHNzZWwgenUuCi0tLQpFbnJpY28gV2VpZ2VsdCwgbWV0dXggSVQgY29u c3VsdApGcmVlIHNvZnR3YXJlIGFuZCBMaW51eCBlbWJlZGRlZCBlbmdpbmVlcmluZwppbmZvQG1l dHV4Lm5ldCAtLSArNDktMTUxLTI3NTY1Mjg3Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBsaXN0cy5saW51eC1m b3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9s aXN0aW5mby9pb21tdQ==