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([240e:362:421:6800:e481:5ceb:8cc4:e9ab]) by smtp.gmail.com with ESMTPSA id j20sm7610772pfd.106.2020.12.17.22.47.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 17 Dec 2020 22:48:00 -0800 (PST) Subject: Re: [PATCH v8 4/9] of/iommu: Support dma-can-stall property To: Jean-Philippe Brucker , Robin Murphy References: <20201112125519.3987595-1-jean-philippe@linaro.org> <20201112125519.3987595-5-jean-philippe@linaro.org> From: Zhangfei Gao Message-ID: Date: Fri, 18 Dec 2020 14:47:11 +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: Content-Language: en-US Cc: devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, guohanjun@huawei.com, rjw@rjwysocki.net, iommu@lists.linux-foundation.org, robh+dt@kernel.org, sudeep.holla@arm.com, bhelgaas@google.com, vivek.gautam@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, lenb@kernel.org 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" CgpPbiAyMDIwLzEyLzE0IOS4i+WNiDg6NTEsIEplYW4tUGhpbGlwcGUgQnJ1Y2tlciB3cm90ZToK PiBPbiBUaHUsIE5vdiAyNiwgMjAyMCBhdCAwNjowOToyNlBNICswMDAwLCBSb2JpbiBNdXJwaHkg d3JvdGU6Cj4+IE9uIDIwMjAtMTEtMTIgMTI6NTUsIEplYW4tUGhpbGlwcGUgQnJ1Y2tlciB3cm90 ZToKPj4+IENvcHkgdGhlIGRtYS1jYW4tc3RhbGwgcHJvcGVydHkgaW50byB0aGUgZndzcGVjIHN0 cnVjdHVyZS4KPj4gQ2FuJ3Qgd2UganVzdCBoYW5kbGUgdGhpcyBhcyBhIHJlZ3VsYXIgZGV2aWNl IHByb3BlcnR5PyBJdCdzIG5vdCBwYXJ0IG9mIHRoZQo+PiBhY3R1YWwgSU9NTVUgc3BlY2lmaWVy LCBpdCBkb2Vzbid0IG5lZWQgdG8gYmUgdHJhbnNsYXRlZCBpbiBhbnkgd2F5LCBhbmQKPj4gQUZB SUNTIGl0J3MgdXNlZCBhIGdyYW5kIHRvdGFsIG9mIG9uY2UsIGluIGEgc2xvdyBwYXRoLiBTaW1w bHkgdHJlYXRpbmcgaXQKPj4gYXMgdGhlIHBlci1kZXZpY2UgcHJvcGVydHkgdGhhdCBpdCBpcyBz aG91bGQgcmVxdWlyZSB6ZXJvIGFkZGl0aW9uYWwgY29kZQo+PiBmb3IgRFQsIGFuZCBhIHNpbXBs ZSBkZXZpY2VfYWRkX3Byb3BlcnRpZXMoKSBjYWxsIGZvciBJT1JULgo+Pgo+PiBUQkggdGhhdCBh cHBlYXJzIHRvIGJlIHRydWUgb2YgcGFzaWQtbnVtLWJpdHMgYXMgd2VsbC4KPiBSaWdodCBJIHRo aW5rIHRoYXQncyBiZXR0ZXIsIHRoYW5rcyBmb3IgdGhlIHBvaW50ZXIuIEknbGwgdGFrZSBjYXJl IG9mCj4gcGFzaWQtbnVtLWJpdHMgdG9vLiBUaGUgSHVhd2VpIHF1aXJrIChmYWtlIFBDSWUgc3Vw cG9ydGluZyBzdGFsbCkgaXMgYQo+IGxpdHRsZSB3b3JzZSB0aGlzIHdheSwgYnV0IGl0IHNob3Vs ZCB3b3JrLgoKVGhhbmtzIEplYW4sIEkgdGVzdGVkIHRoZSBmb2xsb3dpbmcgZGlmZiwgaXQgd29y a3Mgd2l0aCBIdWF3ZWkgcXVpcmsuCgpUaGFua3MKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4 LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFu L2xpc3RpbmZvL2lvbW11