From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2C78CC433EF for ; Mon, 18 Apr 2022 22:09:47 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id AD11F60E0A; Mon, 18 Apr 2022 22:09:46 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gsvhCe4tuNPU; Mon, 18 Apr 2022 22:09:46 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp3.osuosl.org (Postfix) with ESMTPS id 9779960ABB; Mon, 18 Apr 2022 22:09:45 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 741D9C002F; Mon, 18 Apr 2022 22:09:45 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id C8663C002C for ; Mon, 18 Apr 2022 22:09:44 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 9F17960ABB for ; Mon, 18 Apr 2022 22:09:44 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EeaBA4M793Rm for ; Mon, 18 Apr 2022 22:09:43 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp3.osuosl.org (Postfix) with ESMTP id DED876064D for ; Mon, 18 Apr 2022 22:09:43 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CD81D1042; Mon, 18 Apr 2022 15:09:42 -0700 (PDT) Received: from [10.57.41.251] (unknown [10.57.41.251]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A92383F766; Mon, 18 Apr 2022 15:09:39 -0700 (PDT) Message-ID: <1d9a2146-9e48-ba97-d049-5d2332ebbd3a@arm.com> Date: Mon, 18 Apr 2022 23:09:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH 02/13] iommu: Move bus setup to IOMMU device registration Content-Language: en-GB To: Lu Baolu , joro@8bytes.org, will@kernel.org References: From: Robin Murphy In-Reply-To: Cc: jean-philippe@linaro.org, zhang.lyra@gmail.com, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, thierry.reding@gmail.com, linux-arm-kernel@lists.infradead.org, gerald.schaefer@linux.ibm.com 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gMjAyMi0wNC0xNiAwMTowNCwgTHUgQmFvbHUgd3JvdGU6Cj4gT24gMjAyMi80LzE0IDIwOjQy LCBSb2JpbiBNdXJwaHkgd3JvdGU6Cj4+IEBAIC0xODgzLDI3ICsxOTAwLDEyIEBAIHN0YXRpYyBp bnQgaW9tbXVfYnVzX2luaXQoc3RydWN0IGJ1c190eXBlICpidXMpCj4+IMKgwqAgKi8KPj4gwqAg aW50IGJ1c19zZXRfaW9tbXUoc3RydWN0IGJ1c190eXBlICpidXMsIGNvbnN0IHN0cnVjdCBpb21t dV9vcHMgKm9wcykKPj4gwqAgewo+PiAtwqDCoMKgIGludCBlcnI7Cj4+IC0KPj4gLcKgwqDCoCBp ZiAob3BzID09IE5VTEwpIHsKPj4gLcKgwqDCoMKgwqDCoMKgIGJ1cy0+aW9tbXVfb3BzID0gTlVM TDsKPj4gLcKgwqDCoMKgwqDCoMKgIHJldHVybiAwOwo+PiAtwqDCoMKgIH0KPj4gLQo+PiAtwqDC oMKgIGlmIChidXMtPmlvbW11X29wcyAhPSBOVUxMKQo+PiArwqDCoMKgIGlmIChidXMtPmlvbW11 X29wcyAmJiBvcHMgJiYgYnVzLT5pb21tdV9vcHMgIT0gb3BzKQo+PiDCoMKgwqDCoMKgwqDCoMKg wqAgcmV0dXJuIC1FQlVTWTsKPj4gwqDCoMKgwqDCoCBidXMtPmlvbW11X29wcyA9IG9wczsKPiAK PiBEbyB3ZSBzdGlsbCBuZWVkIHRvIGtlZXAgYWJvdmUgbGluZXMgaW4gYnVzX3NldF9pb21tdSgp PwoKSXQgcHJlc2VydmVzIHRoZSBleGlzdGluZyBiZWhhdmlvdXIgdW50aWwgZWFjaCBjYWxsc2l0 ZSBhbmQgaXRzIAphc3NvY2lhdGVkIGVycm9yIGhhbmRsaW5nIGFyZSByZW1vdmVkIGxhdGVyIG9u LCB3aGljaCBzZWVtcyBsaWtlIGFzIGdvb2QgCmEgdGhpbmcgdG8gZG8gYXMgYW55LiBTaW5jZSBJ J20gYWxyZWFkeSByZWxheGluZyBpb21tdV9kZXZpY2VfcmVnaXN0ZXIoKSAKdG8gYSB3YXJuLWJ1 dC1jb250aW51ZSBiZWhhdmlvdXIgd2hpbGUgaXQga2VlcHMgdGhlIGJ1cyBvcHMgb24gCmxpZmUt c3VwcG9ydCBpbnRlcm5hbGx5LCBJIGZpZ3VyZWQgbm90IGNoYW5naW5nIHRvbyBtdWNoIGF0IG9u Y2Ugd291bGQgCm1ha2UgaXQgZWFzaWVyIHRvIGJpc2VjdCBhbnkgcG90ZW50aWFsIGlzc3VlcyBh cmlzaW5nIGZyb20gdGhpcyBmaXJzdCBzdGVwLgoKVGhhbmtzLApSb2Jpbi4KX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0Cmlv bW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0 aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11