From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH V4 05/18] iommu/ioasid: Redefine IOASID set and allocation APIs Date: Wed, 28 Apr 2021 17:46:06 -0300 Message-ID: <20210428204606.GX1370958@nvidia.com> References: <20210421175203.GN1370958@nvidia.com> <20210421133312.15307c44@redhat.com> <20210421230301.GP1370958@nvidia.com> <20210422121020.GT1370958@nvidia.com> <20210423114944.GF1370958@nvidia.com> <20210426123817.GQ1370958@nvidia.com> Mime-Version: 1.0 Content-Transfer-Encoding: base64 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/fKpv9xAO7yDUmDQhi8eE8dYVFyldocMXHvUmN6E/Mc=; b=dWUZedCa9MtKeKcKPCiXEQkNS/LHsw1r8ZBTtkRhU33wV7yZYwpbROnaCgmdP27dVqgl5iepVrK7QmRjaB5aNz7Z53OktyBK4rkztkyhMosn5VgNBRzOfWSVg/u+j0YxDC4/1yT+3caWKAPeH+THRSp35+2511/Z3r45gAjvZqbZgi5qfAu5ei2Yz4zzZ18ueJBSkZf7zOYAtHjCD0lGBxENRpGIvTMsOPNdwXnvjAvBlc51A+KC/TbZVWPwXjNY3X/xGBXBk+BTCLOF6OZ7+qQEDvXRqY5+KQkz18P4yE6UAMILhyQlPtxc2+XT5ns0K5n/VXWPlwB/S+fR9O6BDA== Content-Disposition: inline In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Sender: "iommu" Content-Type: text/plain; charset="windows-1252" To: "Tian, Kevin" Cc: Jean-Philippe Brucker , Li Zefan , "Jiang, Dave" , "Raj, Ashok" , Jonathan Corbet , Jean-Philippe Brucker , LKML , "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" , Alex Williamson , Johannes Weiner , Tejun Heo , "cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "Wu, Hao" , David Woodhouse T24gV2VkLCBBcHIgMjgsIDIwMjEgYXQgMDY6MzQ6MTFBTSArMDAwMCwgVGlhbiwgS2V2aW4gd3Jv dGU6Cgo+ID4gSWYgL2Rldi9pb2FzaWQgaXMgc2luZ2xlIEhXIHBhZ2UgdGFibGUgb25seSB0aGVu IEkgd291bGQgZm9jdXMgb24gdGhhdAo+ID4gaW1wbGVtZW50YXRpb24gYW5kIGxlYXZlIGl0IHRv IHVzZXJzcGFjZSB0byBzcGFuIGRpZmZlcmVudAo+ID4gL2Rldi9pb2FzaWRzIGlmIG5lZWRlZC4K PiA+IAo+ID4gPiBPSywgbm93IEkgc2VlIHdoZXJlIHRoZSBkaXNjb25uZWN0aW9uIGNvbWVzIGZy b20uIEluIG15IGNvbnRleHQgaW9hc2lkCj4gPiA+IGlzIHRoZSBpZGVudGlmaWVyIHRoYXQgaXMg YWN0dWFsbHkgdXNlZCBpbiB0aGUgd2lyZSwgYnV0IHNlZW1zIHlvdSB0cmVhdCBpdCBhcwo+ID4g PiBhIHN3LWRlZmluZWQgbmFtZXNwYWNlIHB1cmVseSBmb3IgcmVwcmVzZW50aW5nIHBhZ2UgdGFi bGVzLiBXZSBzaG91bGQKPiA+ID4gY2xlYXIgdGhpcyBjb25jZXB0IGZpcnN0IGJlZm9yZSBmdXJ0 aGVyIGRpc2N1c3Npbmcgb3RoZXIgZGV0YWlscy4g8J+Yigo+ID4gCj4gPiBUaGVyZSBpcyBubyBn ZW5lcmFsIEhXIHJlcXVpcmVtZW50IHRoYXQgZXZlcnkgSU8gcGFnZSB0YWJsZSBiZQo+ID4gcmVm ZXJyZWQgdG8gYnkgdGhlIHNhbWUgUEFTSUQgYW5kIHRoaXMgQVBJIHdvdWxkIGhhdmUgdG8gc3Vw cG9ydAo+IAo+IFllcywgYnV0IHdoYXQgaXMgdGhlIHZhbHVlIG9mIGFsbG93aW5nIG11bHRpcGxl IFBBU0lEcyByZWZlcnJpbmcgdG8gdGhlCj4gdGhlIHNhbWUgSS9PIHBhZ2UgdGFibGUgKGV4Y2Vw dCB0aGUgbmVzdGluZyBwZ3RhYmxlIGNhc2UpPyBEb2Vzbid0IGl0IAo+IGxlYWQgdG8gcG9vciBp b3RsYiBlZmZpY2llbmN5IGlzc3VlIHNpbWlsYXIgdG8gbXVsdGlwbGUgaW9tbXUgZG9tYWlucyAK PiByZWZlcnJpbmcgdG8gdGhlIHNhbWUgcGFnZSB0YWJsZT8KCkkgdGhpbmsgaW90bGIgZWZmaWNp ZW5jeSBpcyB1cCB0byB0aGUgcGxhdGZvcm0uCgpUaGUgZ2VuZXJhbCB1c2UgY2FzZSBpcyB0byBt YWtlIGFuIElPQVNJRCBmb3Igc29tZXRoaW5nIGxpa2UgdGhlIEdQQQphbmQgdXNlIGl0IGNvbmN1 cnJlbnRseSB3aXRoIHRocmVlIHNheSB0aHJlZSBkZXZpY2VzOgogLSBWRklPIChub3QgUEFTSUQp CiAtIFZEUEEgKFBBU0lEIGNhcGFibGUgSFcpCiAtICdGdXR1cmUgVkRQQSBzdG9yYWdlJyAoUEFT SUQgY2FwYWJsZSBIVykKClRoZSB1QVBJIGZvciB0aGlzIHNob3VsZCBiZSB2ZXJ5IGdlbmVyYWwg YW5kIHRoZSBrZXJuZWwgc2hvdWxkIGRlY2lkZQp0aGUgb3B0aW1hbCB3YXkgdG8gY29uZmlndXJl IHRoZSBIVy4gTWF5YmUgaXQgaXMgb25lIHBhZ2UgdGFibGUgYW5kCm9uZSBQQVNJRCwgb3IgbWF5 YmUgaXQgaXMgc29tZXRoaW5nIGVsc2UuCgpBbGxvd2luZyB0aGUga2VybmVsIHRvIGNob29zZSB0 aGUgUEFTSUQgb25jZSBpdCBrbm93cyB0aGUgUklEIGlzIHRoZQpoaWdoZXN0IGdlbmVyYWxpdHku Cgo+ID4gbm9uLVBBU0lEIElPIHBhZ2UgdGFibGVzIGFzIHdlbGwuIFNvIEknZCBrZWVwIHRoZSB0 d28gdGhpbmdzCj4gPiBzZXBhcmF0ZWQgaW4gdGhlIHVBUEkgLSBldmVuIHRob3VnaCB0aGUga2Vy bmVsIHRvZGF5IGhhcyBhIGdsb2JhbAo+ID4gUEFTSUQgcG9vbC4KPiAKPiBmb3Igbm9uLVBBU0lE IHVzYWdlcyB0aGUgYWxsb2NhdGVkIFBBU0lEIHdpbGwgYmUgd2FzdGVkIGlmIHdlIGRvbid0Cj4g c2VwYXJhdGUgaW9hc2lkIGZyb20gcGFzaWQuIEJ1dCBpdCBtYXkgYmUgd29ydGh3aGlsZSBnaXZl biAxbSBhdmFpbGFibGUgCj4gcGFzaWRzIGFuZCB0aGUgc2ltcGxpZmljYXRpb24gaW4gdGhlIHVB UEkgd2hpY2ggb25seSBuZWVkcyB0byBjYXJlIGFib3V0IAo+IG9uZSBpZCBzcGFjZSB0aGVuLgoK SSdkIHByZWZlciB0aGlzIGJlIGEgcGxhdGZvcm0gY2hvaWNlIGFuZCBub3QgZm9yY2VkIGluIHRo ZSB1QVBJLApiZWNhdXNlIHdlIGNhbiBuZXZlciBnbyBiYWNrIG9uIGl0IGlmIHdlIHNlZSB0aGF0 IHllcyB3ZSBuZWVkIHRvCm9wdGltaXplIGhlcmUuIEkgdW5kZXJzdGFuZCBtYW55IHBsYXRmb3Jt cyBoYXZlIGRpZmZlcmVudCBhdmFpbGFibGUKUEFTSUQgc3BhY2VzIGFscmVhZHkuCgo+ID4gU2lt cGxlIHRoaW5ncyBsaWtlIERQREsgY2FuIHVzZSAjMiBhbmQgcG90ZW50aWFsbHkgaGF2ZSBiZXR0 ZXIgUEFTSUQKPiA+IGxpbWl0cy4gaHlwZXJ2aXNvcnMgd2lsbCBtb3N0IGxpa2VseSBoYXZlIHRv IHVzZSAjMSwgYnV0IGl0IGRlcGVuZHMgb24KPiA+IGhvdyB0aGVpciB2SU9NTVUgaW50ZXJmYWNl IHdvcmtzLgo+IAo+IENhbiB5b3UgZWxhYm9yYXRlIHdoeSBEUERLIHdhbnRzIHRvIHVzZSAjMiBp LmUuIG5vdCB1c2luZyBhIGdsb2JhbAo+IFBBU0lEPwoKSXQgZ2l2ZXMgdGhlIGtlcm5lbCBhbiBv cHRpb24gdG8gbWFrZSB0aGUgZGVjaXNpb24gYWJvdXQgdGhlIFBBU0lECndoZW4gaXQgaGFzIHRo ZSBmdWxsIGluZm9ybWF0aW9uLCBpbmNsdWRpbmcgdGhlIFJJRC4KCj4gPiBJIHRoaW5rIHRoZSBu YW1lIElPQVNJRCBpcyBmaW5lIGZvciB0aGUgdUFQSSwgdGhlIGtlcm5lbCB2ZXJzaW9uIGNhbgo+ ID4gYmUgY2FsbGVkIGlvYXNpZF9pZCBvciBzb21ldGhpbmcuCj4gCj4gaW9hc2lkIGlzIGFscmVh ZHkgYW4gaWQgYW5kIHRoZW4gaW9hc2lkX2lkIGp1c3QgYWRkcyBjb25mdXNpb24uIEFub3RoZXIK PiBwb2ludCBpcyB0aGF0IGlvYXNpZCBpcyBjdXJyZW50bHkgdXNlZCB0byByZXByZXNlbnQgYm90 aCBQQ0kgUEFTSUQgYW5kCj4gQVJNIHN1YnN0cmVhbSBJRCBpbiB0aGUga2VybmVsLiBJdCBpbXBs aWVzIHRoYXQgaWYgd2Ugd2FudCB0byBzZXBhcmF0ZQo+IGlvYXNpZCBhbmQgcGFzaWQgaW4gdGhl IHVBUEkgdGhlICdwYXNpZCcgYWxzbyBuZWVkcyB0byBiZSByZXBsYWNlZCB3aXRoCj4gYW5vdGhl ciBnZW5lcmFsIHRlcm0gdXNhYmxlIGZvciBzdWJzdHJlYW0gSUQuIEFyZSB3ZSBtYWtpbmcgdGhl Cj4gdGVybXMgdG9vIGNvbmZ1c2luZyBoZXJlPwoKVGhpcyBpcyB3aHkgSSBhbHNvIGFtIG5vdCBz byBzdXJlIGFib3V0IGV4cG9zaW5nIHRoZSBQQVNJRCBpbiB0aGUgQVBJCmJlY2F1c2UgaXQgaXMg dWx0aW1hdGVseSBhIEhXIHNwZWNpZmljIGl0ZW0uCgpBcyBJIHNhaWQgdG8gRGF2aWQsIG9uZSBh dmVudWUgaXMgdG8gaGF2ZSBzb21lIGdlbmVyaWMgdUFQSSB0aGF0IGlzCnZlcnkgZ2VuZXJhbCBh bmQga2VlcCBhbGwgdGhpcyBkZWVwbHkgZGV0YWlsZWQgc3R1ZmYsIHRoYXQgcmVhbGx5IG9ubHkK bWF0dGVycyBmb3IgcWVtdSwgYXMgcGFydCBvZiBhIG1vcmUgSFcgc3BlY2lmaWMgdklPTU1VIGRy aXZlcgppbnRlcmZhY2UuCgpKYXNvbgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRh dGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGlu Zm8vaW9tbXU=