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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id y58sm14854019qta.1.2019.10.16.09.11.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 16 Oct 2019 09:11:29 -0700 (PDT) Message-ID: <1571242287.5937.66.camel@lca.pw> Subject: Re: "Convert the AMD iommu driver to the dma-iommu api" is buggy From: Qian Cai To: Joerg Roedel Date: Wed, 16 Oct 2019 12:11:27 -0400 In-Reply-To: <20191016160314.GH4695@suse.de> References: <1571237707.5937.58.camel@lca.pw> <1571237982.5937.60.camel@lca.pw> <20191016153112.GF4695@suse.de> <1571241213.5937.64.camel@lca.pw> <20191016160314.GH4695@suse.de> X-Mailer: Evolution 3.22.6 (3.22.6-10.el7) Mime-Version: 1.0 Cc: iommu@lists.linux-foundation.org, Robin Murphy , Christoph Hellwig , Tom Murphy , linux-kernel@vger.kernel.org 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org T24gV2VkLCAyMDE5LTEwLTE2IGF0IDE4OjAzICswMjAwLCBKb2VyZyBSb2VkZWwgd3JvdGU6Cj4g T24gV2VkLCBPY3QgMTYsIDIwMTkgYXQgMTE6NTM6MzNBTSAtMDQwMCwgUWlhbiBDYWkgd3JvdGU6 Cj4gPiBPbiBXZWQsIDIwMTktMTAtMTYgYXQgMTc6MzEgKzAyMDAsIEpvZXJnIFJvZWRlbCB3cm90 ZToKPiA+IFRoZSB4ODYgb25lIG1pZ2h0IGp1c3QgYmUgYSBtaXN0YWtlLgo+ID4gCj4gPiBkaWZm IC0tZ2l0IGEvZHJpdmVycy9pb21tdS9hbWRfaW9tbXUuYyBiL2RyaXZlcnMvaW9tbXUvYW1kX2lv bW11LmMKPiA+IGluZGV4IGFkMDU0ODRkMGM4MC4uNjNjNGI4OTQ3NTFkIDEwMDY0NAo+ID4gLS0t IGEvZHJpdmVycy9pb21tdS9hbWRfaW9tbXUuYwo+ID4gKysrIGIvZHJpdmVycy9pb21tdS9hbWRf aW9tbXUuYwo+ID4gQEAgLTI1NDIsNyArMjU0Miw3IEBAIHN0YXRpYyBpbnQgYW1kX2lvbW11X21h cChzdHJ1Y3QgaW9tbXVfZG9tYWluICpkb20sCj4gPiB1bnNpZ25lZCBsb25nIGlvdmEsCj4gPiDC oMKgwqDCoMKgwqDCoMKgaWYgKGlvbW11X3Byb3QgJiBJT01NVV9XUklURSkKPiA+IMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgcHJvdCB8PSBJT01NVV9QUk9UX0lXOwo+ID4gwqAKPiA+ IC3CoMKgwqDCoMKgwqDCoHJldCA9IGlvbW11X21hcF9wYWdlKGRvbWFpbiwgaW92YSwgcGFkZHIs IHBhZ2Vfc2l6ZSwgcHJvdCwgR0ZQX0tFUk5FTCk7Cj4gPiArwqDCoMKgwqDCoMKgwqByZXQgPSBp b21tdV9tYXBfcGFnZShkb21haW4sIGlvdmEsIHBhZGRyLCBwYWdlX3NpemUsIHByb3QsIGdmcCk7 Cj4gCj4gWWVhaCwgdGhhdCBpcyBhIGJ1ZywgSSBzcG90dGVkIHRoYXQgdG9vLgo+IAo+ID4gQEAg LTExODUsNyArMTE4NSw3IEBAIHN0YXRpYyBzdHJ1Y3QgaW9tbXVfZG1hX21zaV9wYWdlCj4gPiAq aW9tbXVfZG1hX2dldF9tc2lfcGFnZShzdHJ1Y3QgZGV2aWNlICpkZXYsCj4gPiDCoMKgwqDCoMKg wqDCoMKgaWYgKCFpb3ZhKQo+ID4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqBnb3Rv IG91dF9mcmVlX3BhZ2U7Cj4gPiDCoAo+ID4gLcKgwqDCoMKgwqDCoMKgaWYgKGlvbW11X21hcChk b21haW4sIGlvdmEsIG1zaV9hZGRyLCBzaXplLCBwcm90KSkKPiA+ICvCoMKgwqDCoMKgwqDCoGlm IChpb21tdV9tYXBfYXRvbWljKGRvbWFpbiwgaW92YSwgbXNpX2FkZHIsIHNpemUsIHByb3QpKQo+ ID4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqBnb3RvIG91dF9mcmVlX2lvdmE7Cj4g Cj4gTm90IHNvIHN1cmUgdGhpcyBpcyBhIGJ1ZywgdGhpcyBjb2RlIGlzIG9ubHkgYWJvdXQgc2V0 dGluZyB1cCBNU0lzIG9uCj4gQVJNLiBJdCBwcm9iYWJseSBkb2Vzbid0IG5lZWQgdG8gYmUgYXRv bWljLgoKVGhlIHBhdGNoICJpb21tdTogQWRkIGdmcCBwYXJhbWV0ZXIgdG8gaW9tbXVfb3BzOjpt YXAiIGRvZXMgdGhpcy4gSXQgY291bGQgYmUKY2FsbGVkIGZyb20gYW4gYXRvbWljIGNvbnRleHQg YXMgc2hvd2VkIGluIHRoZSBhcm02NCBjYWxsIHRyYWNlcywKCitpbnQgaW9tbXVfbWFwKHN0cnVj dCBpb21tdV9kb21haW4gKmRvbWFpbiwgdW5zaWduZWQgbG9uZyBpb3ZhLAorwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqBwaHlzX2FkZHJfdCBwYWRkciwgc2l6ZV90IHNpemUsIGludCBwcm90KQor eworwqDCoMKgwqDCoMKgwqBtaWdodF9zbGVlcCgpOworwqDCoMKgwqDCoMKgwqByZXR1cm4gX19p b21tdV9tYXAoZG9tYWluLCBpb3ZhLCBwYWRkciwgc2l6ZSwgcHJvdCwgR0ZQX0tFUk5FTCk7Cit9 Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1h aWxpbmcgbGlzdAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3Rz LmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==