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[82.27.106.168]) by smtp.gmail.com with ESMTPSA id v124-20020a1cac82000000b0037c3d08e0e7sm1502463wme.29.2022.03.22.03.06.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Mar 2022 03:06:39 -0700 (PDT) Date: Tue, 22 Mar 2022 10:06:14 +0000 From: Jean-Philippe Brucker To: "Tian, Kevin" Subject: Re: [PATCH RFC 10/11] iommu: Make IOPF handling framework generic Message-ID: References: <20220320064030.2936936-1-baolu.lu@linux.intel.com> <20220320064030.2936936-11-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Cc: "Raj, Ashok" , Robin Murphy , "linux-kernel@vger.kernel.org" , Christoph Hellwig , Jean-Philippe Brucker , "iommu@lists.linux-foundation.org" , "Pan, Jacob jun" , Jason Gunthorpe , Will Deacon X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gVHVlLCBNYXIgMjIsIDIwMjIgYXQgMDE6MDA6MDhBTSArMDAwMCwgVGlhbiwgS2V2aW4gd3Jv dGU6Cj4gPiBGcm9tOiBKZWFuLVBoaWxpcHBlIEJydWNrZXIgPGplYW4tcGhpbGlwcGVAbGluYXJv Lm9yZz4KPiA+IFNlbnQ6IE1vbmRheSwgTWFyY2ggMjEsIDIwMjIgNzo0MiBQTQo+ID4gCj4gPiBI aSBLZXZpbiwKPiA+IAo+ID4gT24gTW9uLCBNYXIgMjEsIDIwMjIgYXQgMDg6MDk6MzZBTSArMDAw MCwgVGlhbiwgS2V2aW4gd3JvdGU6Cj4gPiA+ID4gRnJvbTogTHUgQmFvbHUgPGJhb2x1Lmx1QGxp bnV4LmludGVsLmNvbT4KPiA+ID4gPiBTZW50OiBTdW5kYXksIE1hcmNoIDIwLCAyMDIyIDI6NDAg UE0KPiA+ID4gPgo+ID4gPiA+IFRoZSBleGlzdGluZyBJT1BGIGhhbmRsaW5nIGZyYW1ld29yayBv bmx5IGhhbmRsZXMgdGhlIEkvTyBwYWdlIGZhdWx0cyBmb3IKPiA+ID4gPiBTVkEuIEdpbnZlbiB0 aGF0IHdlIGFyZSBhYmxlIHRvIGxpbmsgaW9tbXUgZG9tYWluIHdpdGggZWFjaCBJL08gcGFnZQo+ ID4gZmF1bHQsCj4gPiA+ID4gd2UgY2FuIG5vdyBtYWtlIHRoZSBJL08gcGFnZSBmYXVsdCBoYW5k bGluZyBmcmFtZXdvcmsgbW9yZSBnZW5lcmFsCj4gPiBmb3IKPiA+ID4gPiBtb3JlIHR5cGVzIG9m IHBhZ2UgZmF1bHRzLgo+ID4gPgo+ID4gPiAibWFrZSAuLi4gZ2VuZXJpYyIgaW4gc3ViamVjdCBs aW5lIGlzIGtpbmQgb2YgY29uZnVzaW5nLiBSZWFkaW5nIHRoaXMgcGF0Y2ggSQo+ID4gPiB0aGlu ayB5b3UgcmVhbGx5IG1lYW50IGNoYW5naW5nIGZyb20gcGVyLWRldmljZSBmYXVsdCBoYW5kbGlu ZyB0byBwZXItCj4gPiBkb21haW4KPiA+ID4gZmF1bHQgaGFuZGxpbmcuIFRoaXMgaXMgbW9yZSBh Y2N1cmF0ZSBpbiBjb25jZXB0IHNpbmNlIHRoZSBmYXVsdCBpcyBjYXVzZWQgYnkKPiA+ID4gdGhl IGRvbWFpbiBwYWdlIHRhYmxlLiDwn5iKCj4gPiAKPiA+IEkgdGVuZCB0byBkaXNhZ3JlZSB3aXRo IHRoYXQgbGFzdCBwYXJ0LiBUaGUgZmF1bHQgaXMgY2F1c2VkIGJ5IGEgc3BlY2lmaWMKPiA+IGRl dmljZSBhY2Nlc3Npbmcgc2hhcmVkIHBhZ2UgdGFibGVzLiBXZSBzaG91bGQga2VlcCB0aGF0IGRl dmljZQo+ID4gaW5mb3JtYXRpb24gdGhyb3VnaG91dCB0aGUgZmF1bHQgaGFuZGxpbmcsIHNvIHRo YXQgd2UgY2FuIHJlcG9ydCBpdCB0byB0aGUKPiA+IGRyaXZlciB3aGVuIHRoaW5ncyBnbyB3cm9u Zy4gQSBwcm9jZXNzIGNhbiBoYXZlIG11bHRpcGxlIHRocmVhZHMgYm91bmQgdG8KPiA+IGRpZmZl cmVudCBkZXZpY2VzLCB0aGV5IHNoYXJlIHRoZSBzYW1lIG1tIHNvIGlmIHRoZSBkcml2ZXIgd2Fu dGVkIHRvCj4gPiBzaWduYWwgYSBtaXNiZWhhdmluZyB0aHJlYWQsIHNpbWlsYXJseSB0byBhIFNF R1Ygb24gdGhlIENQVSBzaWRlLCBpdCB3b3VsZAo+ID4gbmVlZCB0aGUgZGV2aWNlIGluZm9ybWF0 aW9uIHRvIHByZWNpc2VseSByZXBvcnQgaXQgdG8gdXNlcnNwYWNlLgo+ID4gCj4gCj4gaW9tbXUg ZHJpdmVyIGNhbiBpbmNsdWRlIHRoZSBkZXZpY2UgaW5mb3JtYXRpb24gaW4gdGhlIGZhdWx0IGRh dGEuIEJ1dAo+IGluIGNvbmNlcHQgdGhlIElPUEYgc2hvdWxkIGJlIHJlcG9ydGVkIHBlciBkb21h aW4uCgpTbyBJIGRvbid0IHJlbWVtYmVyIHdoZXJlIHdlIGxlZnQgb2ZmIG9uIHRoYXQgdG9waWMs IHdoYXQgYWJvdXQgZmF1bHQKaW5qZWN0aW9uIGludG8gZ3Vlc3RzPyAgSW4gdGhhdCBjYXNlIGRl dmljZSBpbmZvIGlzIG1vcmUgdGhhbiBqdXN0CmRpYWdub3N0aWMsIGZhdWx0IGluamVjdGlvbiBj YW4ndCB3b3JrIHdpdGhvdXQgaXQuIEkgdGhpbmsgd2UgdGFsa2VkIGFib3V0CnBhc3NpbmcgYSBk ZXZpY2UgY29va2llIHRvIHVzZXJzcGFjZSwganVzdCB3YW50IHRvIG1ha2Ugc3VyZS4KCj4gYW5k IEkgYWdyZWUgd2l0aCBKYXNvbiB0aGF0IGF0IG1vc3Qgd2UgY2FuIHNlbmQgU0VHViB0byB0aGUg ZW50aXJlIHRocmVhZAo+IGdyb3VwIHNpbmNlIHRoZXJlIGlzIG5vIHdheSB0byBhc3NvY2lhdGUg YSBETUEgYmFjayB0byBhIHRocmVhZCB3aGljaCAKPiBpbml0aWF0ZXMgdGhlIERNQS4KClRoZSBw b2ludCBpcyBwcm92aWRpbmcgdGhlIG1vc3QgYWNjdXJhdGUgaW5mb3JtYXRpb24gdG8gdGhlIGRl dmljZSBkcml2ZXIKZm9yIGRpYWdub3N0aWNzIGFuZCBkZWJ1Z2dpbmcuIEEgcHJvY2VzcyBvcGVu cyBtdWx0aXBsZSBxdWV1ZXMgdG8KZGlmZmVyZW50IGRldmljZXMsIHRoZW4gaWYgb25lIG9mIHRo ZSBxdWV1ZXMgaXNzdWVzIGludmFsaWQgRE1BLCB0aGUKZHJpdmVyIHdvbid0IGV2ZW4ga25vdyB3 aGljaCBxdWV1ZSBpcyBicm9rZW4gaWYgeW91IG9ubHkgcmVwb3J0IHRoZSB0YXJnZXQKbW0gYW5k IG5vdCB0aGUgc291cmNlIGRldi4gSSBkb24ndCB0aGluayB3ZSBnYWluIGFueXRoaW5nIGZyb20g ZGlzY2FyZGluZwp0aGUgZGV2aWNlIGluZm9ybWF0aW9uIGZyb20gdGhlIGZhdWx0IHBhdGguCgpU aGFua3MsCkplYW4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0 dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11