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([240e:362:403:1700:58c5:c814:85bd:7d2e]) by smtp.gmail.com with ESMTPSA id ha8sm6351510pjb.6.2021.04.01.18.34.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 01 Apr 2021 18:34:13 -0700 (PDT) Subject: Re: [PATCH v14 10/10] iommu/arm-smmu-v3: Add stall support for platform devices To: Will Deacon , Jean-Philippe Brucker Cc: joro@8bytes.org, vivek.gautam@arm.com, guohanjun@huawei.com, linux-acpi@vger.kernel.org, lenb@kernel.org, devicetree@vger.kernel.org, kevin.tian@intel.com, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, rjw@rjwysocki.net, iommu@lists.linux-foundation.org, sudeep.holla@arm.com, robin.murphy@arm.com, linux-accelerators@lists.ozlabs.org References: <20210401154718.307519-1-jean-philippe@linaro.org> <20210401154718.307519-11-jean-philippe@linaro.org> <20210401171101.GB9447@willie-the-truck> From: Zhangfei Gao Message-ID: <0292a8fb-9408-9c2b-0875-0b71e5f6e170@linaro.org> Date: Fri, 2 Apr 2021 09:34:00 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210401171101.GB9447@willie-the-truck> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210402_023416_936934_8089AC13 X-CRM114-Status: GOOD ( 19.41 ) 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: , 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 SGksIFdpbGwKCk9uIDIwMjEvNC8yIOS4iuWNiDE6MTEsIFdpbGwgRGVhY29uIHdyb3RlOgo+IE9u IFRodSwgQXByIDAxLCAyMDIxIGF0IDA1OjQ3OjE5UE0gKzAyMDAsIEplYW4tUGhpbGlwcGUgQnJ1 Y2tlciB3cm90ZToKPj4gVGhlIFNNTVUgcHJvdmlkZXMgYSBTdGFsbCBtb2RlbCBmb3IgaGFuZGxp bmcgcGFnZSBmYXVsdHMgaW4gcGxhdGZvcm0KPj4gZGV2aWNlcy4gSXQgaXMgc2ltaWxhciB0byBQ Q0llIFBSSSwgYnV0IGRvZXNuJ3QgcmVxdWlyZSBkZXZpY2VzIHRvIGhhdmUKPj4gdGhlaXIgb3du IHRyYW5zbGF0aW9uIGNhY2hlLiBJbnN0ZWFkLCBmYXVsdGluZyB0cmFuc2FjdGlvbnMgYXJlIHBh cmtlZAo+PiBhbmQgdGhlIE9TIGlzIGdpdmVuIGEgY2hhbmNlIHRvIGZpeCB0aGUgcGFnZSB0YWJs ZXMgYW5kIHJldHJ5IHRoZQo+PiB0cmFuc2FjdGlvbi4KPj4KPj4gRW5hYmxlIHN0YWxsIGZvciBk ZXZpY2VzIHRoYXQgc3VwcG9ydCBpdCAob3B0LWluIGJ5IGZpcm13YXJlKS4gV2hlbiBhbgo+PiBl dmVudCBjb3JyZXNwb25kcyB0byBhIHRyYW5zbGF0aW9uIGVycm9yLCBjYWxsIHRoZSBJT01NVSBm YXVsdCBoYW5kbGVyLgo+PiBJZiB0aGUgZmF1bHQgaXMgcmVjb3ZlcmFibGUsIGl0IHdpbGwgY2Fs bCB1cyBiYWNrIHRvIHRlcm1pbmF0ZSBvcgo+PiBjb250aW51ZSB0aGUgc3RhbGwuCj4gV2hpY2gg aGFyZHdhcmUgaXMgdGhpcyB1c2VmdWwgZm9yPyBTdGFsbGluZyBhZGRzIGEgZmFpciBhbW91bnQg b2YgY29tcGxleGl0eQo+IHRvIHRoZSBkcml2ZXIsIHNvIEkgZG9uJ3QgdGhpbmsgd2Ugc2hvdWxk IHN1cHBvcnQgaXQgdW5sZXNzIHdlJ3JlIGxpa2VseSB0bwo+IHNlZSBwbGF0Zm9ybXMgdGhhdCBi b3RoIGltcGxlbWVudCBpdCBhbmQgZG8gc29tZXRoaW5nIHVzZWZ1bCB3aXRoIGl0LgpJIGhhdmUg dGVzdGVkIHRoZSBzdGFsbCBtb2RlIG9uIEhpc2lsaWNvbiBLdW5wZW5nOTIwIGJvYXJkLCBhcyB3 ZWxsIGFzIAp1c2luZyBkcml2ZXJzL21pc2MvdWFjY2UvdWFjY2UuYy4KClRoYW5rcwoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5l bCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6 Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=