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13 Aug 2019 00:39:46 -0700 Subject: Re: [PATCH 2/3] iommu/vt-d: Apply per-device dma_ops To: Christoph Hellwig References: <20190801060156.8564-1-baolu.lu@linux.intel.com> <20190801060156.8564-3-baolu.lu@linux.intel.com> <20190806064347.GA14906@lst.de> From: Lu Baolu Message-ID: Date: Tue, 13 Aug 2019 15:38:48 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: kevin.tian@intel.com, ashok.raj@intel.com, Robin Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com, David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 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" Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org SGkgYWdhaW4sCgpPbiA4LzcvMTkgMTE6MDYgQU0sIEx1IEJhb2x1IHdyb3RlOgo+IEhpIENocmlz dG9waCwKPiAKPiBPbiA4LzYvMTkgMjo0MyBQTSwgQ2hyaXN0b3BoIEhlbGx3aWcgd3JvdGU6Cj4+ IEhpIEx1LAo+Pgo+PiBJIHJlYWxseSBkbyBsaWtlIHRoZSBzd2l0Y2ggdG8gdGhlIHBlci1kZXZp Y2UgZG1hX21hcF9vcHMsIGJ1dDoKPj4KPj4gT24gVGh1LCBBdWcgMDEsIDIwMTkgYXQgMDI6MDE6 NTVQTSArMDgwMCwgTHUgQmFvbHUgd3JvdGU6Cj4+PiBDdXJyZW50IEludGVsIElPTU1VIGRyaXZl ciBzZXRzIHRoZSBzeXN0ZW0gbGV2ZWwgZG1hX29wcy4gVGhpcwo+Pj4gaW1wbGVtZW50YXRpb24g aGFzIGF0IGxlYXN0IHRoZSBmb2xsb3dpbmcgZHJhd2JhY2tzOiAxKSBlYWNoCj4+PiBkbWEgQVBJ IHdpbGwgZ28gdGhyb3VnaCB0aGUgSU9NTVUgZHJpdmVyIGV2ZW4gdGhlIGRldmljZXMgYXJlCj4+ PiB1c2luZyBpZGVudGl0eSBtYXBwZWQgZG9tYWluczsgMikgaWYgdXNlciByZXF1ZXN0cyB0byB1 c2UgYW4KPj4+IGlkZW50aXR5IG1hcHBlZCBkb21haW4gKGEuay5hLiBieXBhc3MgaW9tbXUgdHJh bnNsYXRpb24pLCB0aGUKPj4+IGRyaXZlciBtaWdodCBmYWxsIGJhY2sgdG8gZG1hIGRvbWFpbiBi bGluZGx5IGlmIHRoZSBkZXZpY2UgaXMKPj4+IG5vdCBhYmxlIHRvIGFkZHJlc3MgYWxsIHN5c3Rl bSBtZW1vcnkuCj4+Cj4+IFRoaXMgaXMgdmVyeSBjbGVhcmx5IGEgYmVoYXZpb3JhbCByZWdyZXNz aW9uLsKgIFRoZSBpbnRlbC1pb21tdSBkcml2ZXIKPj4gaGFzIGFsd2F5cyB1c2VkIHRoZSBpb21t dSBtYXBwaW5nIHRvIHByb3ZpZGUgZGVjZW50IHN1cHBvcnQgZm9yCj4+IGRldmljZXMgdGhhdCBk byBub3QgaGF2ZSB0aGUgZnVsbCA2NC1iaXQgYWRkcmVzc2luZyBjYXBhYmlsaXR5LCBhbmQKPj4g Y2hhbmdpbmcgdGhpcyB3aWxsIG1ha2UgYSBsb3Qgb2YgZXhpc3Rpbmcgc2V0dXBzIGdvIHNsb3dl ci4KPj4KPiAKPiBJIGFncmVlIHdpdGggeW91IHRoYXQgd2Ugc2hvdWxkIGtlZXAgdGhlIGNhcGFi aWxpdHkgYW5kIGF2b2lkIHBvc3NpYmxlCj4gcGVyZm9ybWFuY2UgcmVncmVzc2lvbiBvbiBzb21l IHNldHVwcy4gQnV0LCBpbnN0ZWFkIG9mIGhhcmQtY29kaW5nIHRoaXMKPiBpbiB0aGUgaW9tbXUg ZHJpdmVyLCBJIHByZWZlciBhIG1vcmUgc2NhbGFibGUgd2F5Lgo+IAo+IEZvciBleGFtcGxlLCB0 aGUgY29uY2VwdCBvZiBwZXIgZ3JvdXAgZGVmYXVsdCBkb21haW4gdHlwZSBbMV0gc2VlbXMgdG8K PiBiZSBhIGdvb2QgY2hvaWNlLiBUaGUga2VybmVsIGNvdWxkIGJlIHN0YXRpY2FsbHkgY29tcGls ZWQgYXMgYnktZGVmYXVsdAo+ICJwYXNzIHRocm91Z2giIG9yICJ0cmFuc2xhdGUgZXZlcnl0aGlu ZyIuIFRoZSBwZXIgZ3JvdXAgZGVmYXVsdCBkb21haW4KPiB0eXBlIEFQSSBjb3VsZCB0aGVuIGJl IHVzZWQgYnkgdGhlIHByaXZpbGVnZWQgdXNlciB0byB0d2VhayBzb21lIG9mIHRoZQo+IGdyb3Vw cyBmb3IgYmV0dGVyIHBlcmZvcm1hbmNlLCBlaXRoZXIgYnkgMSkgYnlwYXNzaW5nIGlvbW11IHRy YW5zbGF0aW9uCj4gZm9yIHRoZSB0cnVzdGVkIHN1cGVyLXNwZWVkIGRldmljZXMsIG9yIDIpIGFw cGx5aW5nIGlvbW11IHRyYW5zbGF0aW9uIHRvCj4gYWNjZXNzIHRoZSBzeXN0ZW0gbWVtb3J5IHdo aWNoIGlzIGJleW9uZCB0aGUgZGV2aWNlJ3MgYWRkcmVzcyBjYXBhYmlsaXR5Cj4gKHdpdGhvdXQg dGhlIG5lY2Vzc2FyeSBvZiB1c2luZyBib3VuY2UgYnVmZmVyKS4KPiAKPiBbMV0gaHR0cHM6Ly93 d3cuc3Bpbmljcy5uZXQvbGlzdHMvaW9tbXUvbXNnMzcxMTMuaHRtbAo+IAoKVGhlIGNvZGUgdGhh dCB0aGlzIHBhdGNoIGlzIHRyeWluZyB0byByZW1vdmUgYWxzbyBsb29rcyBidWdneS4gVGhlIGNo ZWNrCmFuZCByZXBsYWNlIG9mIGRvbWFpbiBoYXBwZW5zIGluIGVhY2ggRE1BIEFQSSwgYnV0IHRo ZXJlIGlzbid0IGFueSBsb2NrCnRvIHNlcmlhbGl6ZSB0aGVtLgoKQmVzdCByZWdhcmRzLApMdSBC YW9sdQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9t bXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8v bGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11