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X-IronPort-AV: E=McAfee;i="6400,9594,10321"; a="324075792" X-IronPort-AV: E=Sophos;i="5.90,271,1643702400"; d="scan'208";a="324075792" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2022 16:38:04 -0700 X-IronPort-AV: E=Sophos;i="5.90,271,1643702400"; d="scan'208";a="575804958" Received: from blu2-mobl3.ccr.corp.intel.com (HELO [10.254.214.32]) ([10.254.214.32]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2022 16:38:00 -0700 Message-ID: Date: Tue, 19 Apr 2022 07:37:57 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Content-Language: en-US To: Robin Murphy , joro@8bytes.org, will@kernel.org References: <1d9a2146-9e48-ba97-d049-5d2332ebbd3a@arm.com> From: Lu Baolu Subject: Re: [PATCH 02/13] iommu: Move bus setup to IOMMU device registration In-Reply-To: <1d9a2146-9e48-ba97-d049-5d2332ebbd3a@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220418_163807_932630_C127CBC7 X-CRM114-Status: GOOD ( 13.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe@linaro.org, mjrosato@linux.ibm.com, sven@svenpeter.dev, zhang.lyra@gmail.com, robdclark@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, baolu.lu@linux.intel.com, yong.wu@mediatek.com, m.szyprowski@samsung.com Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMjAyMi80LzE5IDY6MDksIFJvYmluIE11cnBoeSB3cm90ZToKPiBPbiAyMDIyLTA0LTE2IDAx OjA0LCBMdSBCYW9sdSB3cm90ZToKPj4gT24gMjAyMi80LzE0IDIwOjQyLCBSb2JpbiBNdXJwaHkg d3JvdGU6Cj4+PiBAQCAtMTg4MywyNyArMTkwMCwxMiBAQCBzdGF0aWMgaW50IGlvbW11X2J1c19p bml0KHN0cnVjdCBidXNfdHlwZSAqYnVzKQo+Pj4gwqDCoCAqLwo+Pj4gwqAgaW50IGJ1c19zZXRf aW9tbXUoc3RydWN0IGJ1c190eXBlICpidXMsIGNvbnN0IHN0cnVjdCBpb21tdV9vcHMgKm9wcykK Pj4+IMKgIHsKPj4+IC3CoMKgwqAgaW50IGVycjsKPj4+IC0KPj4+IC3CoMKgwqAgaWYgKG9wcyA9 PSBOVUxMKSB7Cj4+PiAtwqDCoMKgwqDCoMKgwqAgYnVzLT5pb21tdV9vcHMgPSBOVUxMOwo+Pj4g LcKgwqDCoMKgwqDCoMKgIHJldHVybiAwOwo+Pj4gLcKgwqDCoCB9Cj4+PiAtCj4+PiAtwqDCoMKg IGlmIChidXMtPmlvbW11X29wcyAhPSBOVUxMKQo+Pj4gK8KgwqDCoCBpZiAoYnVzLT5pb21tdV9v cHMgJiYgb3BzICYmIGJ1cy0+aW9tbXVfb3BzICE9IG9wcykKPj4+IMKgwqDCoMKgwqDCoMKgwqDC oCByZXR1cm4gLUVCVVNZOwo+Pj4gwqDCoMKgwqDCoCBidXMtPmlvbW11X29wcyA9IG9wczsKPj4K Pj4gRG8gd2Ugc3RpbGwgbmVlZCB0byBrZWVwIGFib3ZlIGxpbmVzIGluIGJ1c19zZXRfaW9tbXUo KT8KPiAKPiBJdCBwcmVzZXJ2ZXMgdGhlIGV4aXN0aW5nIGJlaGF2aW91ciB1bnRpbCBlYWNoIGNh bGxzaXRlIGFuZCBpdHMgCj4gYXNzb2NpYXRlZCBlcnJvciBoYW5kbGluZyBhcmUgcmVtb3ZlZCBs YXRlciBvbiwgd2hpY2ggc2VlbXMgbGlrZSBhcyBnb29kIAo+IGEgdGhpbmcgdG8gZG8gYXMgYW55 LiBTaW5jZSBJJ20gYWxyZWFkeSByZWxheGluZyBpb21tdV9kZXZpY2VfcmVnaXN0ZXIoKSAKPiB0 byBhIHdhcm4tYnV0LWNvbnRpbnVlIGJlaGF2aW91ciB3aGlsZSBpdCBrZWVwcyB0aGUgYnVzIG9w cyBvbiAKPiBsaWZlLXN1cHBvcnQgaW50ZXJuYWxseSwgSSBmaWd1cmVkIG5vdCBjaGFuZ2luZyB0 b28gbXVjaCBhdCBvbmNlIHdvdWxkIAo+IG1ha2UgaXQgZWFzaWVyIHRvIGJpc2VjdCBhbnkgcG90 ZW50aWFsIGlzc3VlcyBhcmlzaW5nIGZyb20gdGhpcyBmaXJzdCBzdGVwLgoKRmFpciBlbm91Z2gu IFRoYW5rIHlvdSBmb3IgdGhlIGV4cGxhbmF0aW9uLgoKRG8geW91IGhhdmUgYSBwdWJsaWMgdHJl ZSB0aGF0IEkgY291bGQgcHVsbCB0aGVzZSBwYXRjaGVzIGFuZCB0cnkgdGhlbQpvbiBhbiBJbnRl bCBoYXJkd2FyZT8gT3IgcGVyaGFwcyB5b3UgaGF2ZSBkb25lIHRoaXM/IEkgbGlrZSB0aGUgd2hv bGUKaWRlYSBvZiB0aGlzIHNlcmllcywgYnV0IGl0J3MgYmV0dGVyIHRvIHRyeSBpdCB3aXRoIGEg cmVhbCBoYXJkd2FyZS4KCkJlc3QgcmVnYXJkcywKYmFvbHUKCgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxp c3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=