From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?Um9nZXIgUGF1IE1vbm7DqQ==?= Subject: Re: [PATCH v4 3/4] amd-iommu: disable iommu_hap_pt_share with AMD IOMMUs Date: Mon, 18 Aug 2014 11:22:15 +0200 Message-ID: <53F1C5C7.1060505@citrix.com> References: <1401876381-42977-1-git-send-email-roger.pau@citrix.com> <1401876381-42977-4-git-send-email-roger.pau@citrix.com> <53CE9FAC.8070008@amd.com> <53CEA1ED.1050604@citrix.com> <53E4EE93.3020607@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1XJJ8t-000319-Oo for xen-devel@lists.xenproject.org; Mon, 18 Aug 2014 09:22:19 +0000 In-Reply-To: <53E4EE93.3020607@amd.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Suravee Suthikulanit , "xen-devel@lists.xenproject.org" Cc: Jan Beulich , Xiantao Zhang List-Id: xen-devel@lists.xenproject.org T24gMDgvMDgvMTQgMTc6MzYsIFN1cmF2ZWUgU3V0aGlrdWxhbml0IHdyb3RlOgo+IE9uIDcvMjIv MjAxNCAxMjozOSBQTSwgUm9nZXIgUGF1IE1vbm7DqSB3cm90ZToKPj4gT24gMjIvMDcvMTQgMTk6 MzAsIFN1cmF2ZWUgU3V0aGlrdWxwYW5pdCB3cm90ZToKPj4+IFJvZ2VyLAo+Pj4KPj4+IEkgYW0g bm90IHF1aXRlIHN1cmUgd2h5IHlvdSB3b3VsZCBkaXNhYmxlICJpb21tdV9oYXBfcHRfc2hhcmUi IGZvciBBTUQKPj4+IElPTU1VLiBUaGUgY3VycmVudCBpbXBsZW1lbnRhdGlvbiBhc3N1bWVzIHRo YXQgdGhlIHAybSBjYW4gYmUgc2hhcmVkLgo+Pj4KPj4+IEFsc28sIEkgZmVlbCB0aGF0IHNpbXBs eSBqdXN0IHNldCBpb21tdV9oYXBfcHRfc2hhcmUgPSAwICh3aGlsZSBzdGlsbAo+Pj4gaGF2aW5n IHNldmVyYWwgcGxhY2VzIGluIHRoZSBBTUQgaW9tbXUgZHJpdmVycyBhbmQgcDJtLXB0LmMgYXNz dW1pbmcKPj4+IHRoYXQgaXQgY2FuIGJlIHNoYXJlZCkgc2VlbXMgYSBiaXQgbWVzc3kuCj4+Cj4+ IEFjY29yZGluZyB0byB0aGUgY29tbWVudCBpbiBwMm0uaCwgQU1EIElPTU1VIG9ubHkgc3VwcG9y dHMgYml0IDUyIHRvIGJpdAo+PiA1OCBpbiB0aGUgcHRlIHRvIGJlIDAsIG90aGVyd2lzZSB0aGUg aHcgZ2VuZXJhdGVzIHBhZ2UgZmF1bHRzLgo+Pgo+PiBJZiB3ZSB3YW50IHRvIHN1cHBvcnQgZG9p bmcgSU8gdG8gZGV2aWNlcyBiZWhpbmQgYW4gSU9NTVUgZnJvbSBwYWdlCj4+IHR5cGVzIGRpZmZl cmVudCB0aGFuIHAybV9yYW1fcncgdGhlIHAybSB0YWJsZXMgY2Fubm90IGJlIHNoYXJlZCwgYmVj YXVzZQo+PiB0aGUgYml0cyBmcm9tIDUyIHRvIDU4IHdpbGwgaW5kZWVkIGJlIGRpZmZlcmVudCB0 aGFuIDAsIGFuZCB3aWxsCj4+IGdlbmVyYXRlIHBhZ2UgZmF1bHRzLgo+Pgo+PiBSb2dlci4KPj4K PiAKPiBBcyB5b3UgaGF2ZSBtZW50aW9uZWQsIHRoZXkgY2Fubm90IGJlIHNoYXJlZCBkdWUgdG8g dGhlIDUyIGFuZCA1OCBiaXRzLgo+ICBIb3dldmVyLCB3aGF0IEkgd2FzIHRyeWluZyB0byBzYXkg aXMgdGhhdCwgYmVzaWRlcyBqdXN0IHNpbXBseSBzZXQgdGhlCj4gZmxhZyB0byAwLCB3ZSBwcm9i YWJseSBzaG91bGQgcmVtb3ZlIGV4aXN0aW5nIGxvZ2ljIGluIHZhcmlvdXMgcGxhY2VzCj4gdGhh dCBhc3N1bWVzIHRoYXQgQU1EIElPTU1VIGNhbiBoYXZlIHNoYXJlX3AybV90YWJsZT0xLgo+IAo+ IElmIHlvdSBhcmUgYWdyZWUsIHRoZSBhdHRhY2htZW50IGlzIHRoZSBwYXRjaCB0aGF0IHNob3Vs ZCBkbyB0aGF0Lgo+IAo+IEkgaGF2ZSB0ZXN0ZWQgZGV2aWNlLXBhc3N0aHJvdWdoIHcvIHRoZSBh bWQtaW9tbXU6IGRpc2FibGUKPiBpb21tdV9oYXBfcHRfc2hhcmUgd2l0aCBBTUQgSU9NTVVzLCBh bmQgbXkgcGF0Y2ggYW5kIGl0IGlzIHdvcmtpbmcuCj4gCj4gQWNrZWQtYnkgU3VyYXZlZSBTdXRo aWt1bHBhbml0IDxzdXJhdmVlLnN1dGhpa3VscGFuaXRAYW1kLmNvbT4KPiAKPiBUaGFua3MsCj4g Cj4gU3VyYXZlZQo+IAo+IGlvbW11LXJlbW92YWwtb2Ytc2hhcmVfcDJtX3RhYmxlLWZyb20tQU1E LUlPTU1VLnBhdGNoCj4gCj4gCj4gRnJvbSBmMjg4Mzg2Nzk4NjdmYmJjM2JlNjI4NjU1NmVlZDdm OTA4ZWVhNTU5IE1vbiBTZXAgMTcgMDA6MDA6MDAgMjAwMQo+IEZyb206IFN1cmF2ZWUgU3V0aGlr dWxwYW5pdCA8U3VyYXZlZS5TdXRoaWt1bHBhbml0QGFtZC5jb20+Cj4gRGF0ZTogRnJpLCA4IEF1 ZyAyMDE0IDA3OjI2OjE1IC0wNTAwCj4gU3ViamVjdDogW1BBVENIXSBpb21tdTogUmVtb3ZhbCBv ZiBzaGFyZV9wMm1fdGFibGUgZnJvbSBBTUQgSU9NTVUKPiAKPiBUaGlzIHBhdGNoIHJlbW92ZXMg ZXhpc3RpbmcgbG9naWNzIHdoaWNoIGFzc3VtZXMgaW9tbXVfaGFwX3B0X3NoYXJlCj4gaXMgZW5h YmxlZCBmb3IgQU1EIElPTU1VLgo+IAo+IFNpZ25lZC1vZmYtYnkgIFN1cmF2ZWUgU3V0aGlrdWxw YW5pdCA8c3VyYXZlZS5zdXRoaWt1bHBhbml0QGFtZC5jb20+Cj4gQ2Q6IFJvZ2VyIFBhdSBNb25u w4PCqSA8cm9nZXIucGF1QGNpdHJpeC5jb20+Cj4gQ2M6IFhpYW50YW8gWmhhbmcgPHhpYW50YW8u emhhbmdAaW50ZWwuY29tPgo+IENjOiBKYW4gQmV1bGljaCA8amJldWxpY2hAc3VzZS5jb20+Cj4g LS0tCj4gTk9URVM6IFRoaXMgcGF0Y2ggZGVwZW5kcyBvbiB0aGUgImFtZC1pb21tdTogZGlzYWJs ZSBpb21tdV9oYXBfcHRfc2hhcmUgd2l0aCBBTUQgSU9NTVVzIgo+IHBhdGNoIGZyb20gUm9nZXIg UGF1IE1vbm5lIDxyb2dlci5wYXVAY2l0cml4LmNvbT4uCj4gCj4gIHhlbi9hcmNoL3g4Ni9tbS9w Mm0tcHQuYyAgICAgICAgICAgICAgICAgICAgfCAyMyArKysrKystLS0tLS0tLS0tLS0tLQo+ICB4 ZW4vZHJpdmVycy9wYXNzdGhyb3VnaC9hbWQvaW9tbXVfbWFwLmMgICAgIHwgMzMgLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0KPiAgeGVuL2RyaXZlcnMvcGFzc3Rocm91Z2gvYW1kL3BjaV9h bWRfaW9tbXUuYyB8ICA0IC0tLS0KPiAgeGVuL2RyaXZlcnMvcGFzc3Rocm91Z2gvaW9tbXUuYyAg ICAgICAgICAgICB8ICAyICstCj4gIDQgZmlsZXMgY2hhbmdlZCwgOCBpbnNlcnRpb25zKCspLCA1 NCBkZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEveGVuL2FyY2gveDg2L21tL3AybS1wdC5j IGIveGVuL2FyY2gveDg2L21tL3AybS1wdC5jCj4gaW5kZXggMDg1YWI2Zi4uNmJlYzBlOSAxMDA2 NDQKPiAtLS0gYS94ZW4vYXJjaC94ODYvbW0vcDJtLXB0LmMKPiArKysgYi94ZW4vYXJjaC94ODYv bW0vcDJtLXB0LmMKPiBAQCAtMzYsNyArMzYsNiBAQAo+ICAjaW5jbHVkZSA8eGVuL2V2ZW50Lmg+ Cj4gICNpbmNsdWRlIDx4ZW4vdHJhY2UuaD4KPiAgI2luY2x1ZGUgPGFzbS9odm0vbmVzdGVkaHZt Lmg+Cj4gLSNpbmNsdWRlIDxhc20vaHZtL3N2bS9hbWQtaW9tbXUtcHJvdG8uaD4KPiAgCj4gICNp bmNsdWRlICJtbS1sb2Nrcy5oIgo+ICAKPiBAQCAtNjUzLDIyICs2NTIsMTQgQEAgcDJtX3B0X3Nl dF9lbnRyeShzdHJ1Y3QgcDJtX2RvbWFpbiAqcDJtLCB1bnNpZ25lZCBsb25nIGdmbiwgbWZuX3Qg bWZuLAo+ICAKPiAgICAgIGlmICggaW9tbXVfZW5hYmxlZCAmJiBuZWVkX2lvbW11KHAybS0+ZG9t YWluKSApCj4gICAgICB7Cj4gLSAgICAgICAgaWYgKCBpb21tdV9oYXBfcHRfc2hhcmUgKQo+IC0g ICAgICAgIHsKPiAtICAgICAgICAgICAgaWYgKCBvbGRfbWZuICYmIChvbGRfbWZuICE9IG1mbl94 KG1mbikpICkKPiAtICAgICAgICAgICAgICAgIGFtZF9pb21tdV9mbHVzaF9wYWdlcyhwMm0tPmRv bWFpbiwgZ2ZuLCBwYWdlX29yZGVyKTsKPiAtICAgICAgICB9Cj4gKyAgICAgICAgdW5zaWduZWQg aW50IGZsYWdzID0gcDJtX2dldF9pb21tdV9mbGFncyhwMm10KTsKPiArCj4gKyAgICAgICAgaWYg KCBmbGFncyAhPSAwICkKPiArICAgICAgICAgICAgZm9yICggaSA9IDA7IGkgPCAoMVVMIDw8IHBh Z2Vfb3JkZXIpOyBpKysgKQo+ICsgICAgICAgICAgICAgICAgaW9tbXVfbWFwX3BhZ2UocDJtLT5k b21haW4sIGdmbitpLCBtZm5feChtZm4pK2ksIGZsYWdzKTsKPiAgICAgICAgICBlbHNlCj4gLSAg ICAgICAgewo+IC0gICAgICAgICAgICB1bnNpZ25lZCBpbnQgZmxhZ3MgPSBwMm1fZ2V0X2lvbW11 X2ZsYWdzKHAybXQpOwo+IC0KPiAtICAgICAgICAgICAgaWYgKCBmbGFncyAhPSAwICkKPiAtICAg ICAgICAgICAgICAgIGZvciAoIGkgPSAwOyBpIDwgKDFVTCA8PCBwYWdlX29yZGVyKTsgaSsrICkK PiAtICAgICAgICAgICAgICAgICAgICBpb21tdV9tYXBfcGFnZShwMm0tPmRvbWFpbiwgZ2ZuK2ks IG1mbl94KG1mbikraSwgZmxhZ3MpOwo+IC0gICAgICAgICAgICBlbHNlCj4gLSAgICAgICAgICAg ICAgICBmb3IgKCBpbnQgaSA9IDA7IGkgPCAoMVVMIDw8IHBhZ2Vfb3JkZXIpOyBpKysgKQo+IC0g ICAgICAgICAgICAgICAgICAgIGlvbW11X3VubWFwX3BhZ2UocDJtLT5kb21haW4sIGdmbitpKTsK PiAtICAgICAgICB9Cj4gKyAgICAgICAgICAgIGZvciAoIGludCBpID0gMDsgaSA8ICgxVUwgPDwg cGFnZV9vcmRlcik7IGkrKyApCj4gKyAgICAgICAgICAgICAgICBpb21tdV91bm1hcF9wYWdlKHAy bS0+ZG9tYWluLCBnZm4raSk7Cj4gICAgICB9Cj4gIAo+ICAgb3V0Ogo+IGRpZmYgLS1naXQgYS94 ZW4vZHJpdmVycy9wYXNzdGhyb3VnaC9hbWQvaW9tbXVfbWFwLmMgYi94ZW4vZHJpdmVycy9wYXNz dGhyb3VnaC9hbWQvaW9tbXVfbWFwLmMKPiBpbmRleCBhOGM2MGVjLi4yODA4YzMxIDEwMDY0NAo+ IC0tLSBhL3hlbi9kcml2ZXJzL3Bhc3N0aHJvdWdoL2FtZC9pb21tdV9tYXAuYwo+ICsrKyBiL3hl bi9kcml2ZXJzL3Bhc3N0aHJvdWdoL2FtZC9pb21tdV9tYXAuYwo+IEBAIC02NDAsOSArNjQwLDYg QEAgaW50IGFtZF9pb21tdV9tYXBfcGFnZShzdHJ1Y3QgZG9tYWluICpkLCB1bnNpZ25lZCBsb25n IGdmbiwgdW5zaWduZWQgbG9uZyBtZm4sCj4gIAo+ICAgICAgQlVHX09OKCAhaGQtPmFyY2gucm9v dF90YWJsZSApOwo+ICAKPiAtICAgIGlmICggaW9tbXVfdXNlX2hhcF9wdChkKSApCj4gLSAgICAg ICAgcmV0dXJuIDA7Cj4gLQo+ICAgICAgbWVtc2V0KHB0X21mbiwgMCwgc2l6ZW9mKHB0X21mbikp Owo+ICAKPiAgICAgIHNwaW5fbG9jaygmaGQtPmFyY2gubWFwcGluZ19sb2NrKTsKPiBAQCAtNzE4 LDkgKzcxNSw2IEBAIGludCBhbWRfaW9tbXVfdW5tYXBfcGFnZShzdHJ1Y3QgZG9tYWluICpkLCB1 bnNpZ25lZCBsb25nIGdmbikKPiAgCj4gICAgICBCVUdfT04oICFoZC0+YXJjaC5yb290X3RhYmxl ICk7Cj4gIAo+IC0gICAgaWYgKCBpb21tdV91c2VfaGFwX3B0KGQpICkKPiAtICAgICAgICByZXR1 cm4gMDsKPiAtCj4gICAgICBtZW1zZXQocHRfbWZuLCAwLCBzaXplb2YocHRfbWZuKSk7Cj4gIAo+ ICAgICAgc3Bpbl9sb2NrKCZoZC0+YXJjaC5tYXBwaW5nX2xvY2spOwo+IEBAIC03NzcsMzAgKzc3 MSwzIEBAIGludCBhbWRfaW9tbXVfcmVzZXJ2ZV9kb21haW5fdW5pdHlfbWFwKHN0cnVjdCBkb21h aW4gKmRvbWFpbiwKPiAgICAgIH0KPiAgICAgIHJldHVybiAwOwo+ICB9Cj4gLQo+IC0vKiBTaGFy ZSBwMm0gdGFibGUgd2l0aCBpb21tdS4gKi8KPiAtdm9pZCBhbWRfaW9tbXVfc2hhcmVfcDJtKHN0 cnVjdCBkb21haW4gKmQpCj4gLXsKPiAtICAgIHN0cnVjdCBodm1faW9tbXUgKmhkICA9IGRvbWFp bl9odm1faW9tbXUoZCk7Cj4gLSAgICBzdHJ1Y3QgcGFnZV9pbmZvICpwMm1fdGFibGU7Cj4gLSAg ICBtZm5fdCBwZ2RfbWZuOwo+IC0KPiAtICAgIEFTU0VSVCggaXNfaHZtX2RvbWFpbihkKSAmJiBk LT5hcmNoLmh2bV9kb21haW4uaGFwX2VuYWJsZWQgKTsKPiAtCj4gLSAgICBpZiAoICFpb21tdV91 c2VfaGFwX3B0KGQpICkKPiAtICAgICAgICByZXR1cm47Cj4gLQo+IC0gICAgcGdkX21mbiA9IHBh Z2V0YWJsZV9nZXRfbWZuKHAybV9nZXRfcGFnZXRhYmxlKHAybV9nZXRfaG9zdHAybShkKSkpOwo+ IC0gICAgcDJtX3RhYmxlID0gbWZuX3RvX3BhZ2UobWZuX3gocGdkX21mbikpOwo+IC0KPiAtICAg IGlmICggaGQtPmFyY2gucm9vdF90YWJsZSAhPSBwMm1fdGFibGUgKQo+IC0gICAgewo+IC0gICAg ICAgIGZyZWVfYW1kX2lvbW11X3BndGFibGUoaGQtPmFyY2gucm9vdF90YWJsZSk7Cj4gLSAgICAg ICAgaGQtPmFyY2gucm9vdF90YWJsZSA9IHAybV90YWJsZTsKPiAtCj4gLSAgICAgICAgLyogV2hl biBzaGFyaW5nIHAybSB3aXRoIGlvbW11LCBwYWdpbmcgbW9kZSA9IDQgKi8KPiAtICAgICAgICBo ZC0+YXJjaC5wYWdpbmdfbW9kZSA9IElPTU1VX1BBR0lOR19NT0RFX0xFVkVMXzQ7Cj4gLSAgICAg ICAgQU1EX0lPTU1VX0RFQlVHKCJTaGFyZSBwMm0gdGFibGUgd2l0aCBpb21tdTogcDJtIHRhYmxl ID0gJSNseFxuIiwKPiAtICAgICAgICAgICAgICAgICAgICAgICAgbWZuX3gocGdkX21mbikpOwo+ IC0gICAgfQo+IC19Cj4gZGlmZiAtLWdpdCBhL3hlbi9kcml2ZXJzL3Bhc3N0aHJvdWdoL2FtZC9w Y2lfYW1kX2lvbW11LmMgYi94ZW4vZHJpdmVycy9wYXNzdGhyb3VnaC9hbWQvcGNpX2FtZF9pb21t dS5jCj4gaW5kZXggMGIzMDFiMy4uYzg5M2RlYSAxMDA2NDQKPiAtLS0gYS94ZW4vZHJpdmVycy9w YXNzdGhyb3VnaC9hbWQvcGNpX2FtZF9pb21tdS5jCj4gKysrIGIveGVuL2RyaXZlcnMvcGFzc3Ro cm91Z2gvYW1kL3BjaV9hbWRfaW9tbXUuYwo+IEBAIC00NTMsOSArNDUzLDYgQEAgc3RhdGljIHZv aWQgZGVhbGxvY2F0ZV9pb21tdV9wYWdlX3RhYmxlcyhzdHJ1Y3QgZG9tYWluICpkKQo+ICB7Cj4g ICAgICBzdHJ1Y3QgaHZtX2lvbW11ICpoZCAgPSBkb21haW5faHZtX2lvbW11KGQpOwo+ICAKPiAt ICAgIGlmICggaW9tbXVfdXNlX2hhcF9wdChkKSApCj4gLSAgICAgICAgcmV0dXJuOwo+IC0KPiAg ICAgIHNwaW5fbG9jaygmaGQtPmFyY2gubWFwcGluZ19sb2NrKTsKPiAgICAgIGlmICggaGQtPmFy Y2gucm9vdF90YWJsZSApCj4gICAgICB7Cj4gQEAgLTYxOSw3ICs2MTYsNiBAQCBjb25zdCBzdHJ1 Y3QgaW9tbXVfb3BzIGFtZF9pb21tdV9vcHMgPSB7Cj4gICAgICAuc2V0dXBfaHBldF9tc2kgPSBh bWRfc2V0dXBfaHBldF9tc2ksCj4gICAgICAuc3VzcGVuZCA9IGFtZF9pb21tdV9zdXNwZW5kLAo+ ICAgICAgLnJlc3VtZSA9IGFtZF9pb21tdV9yZXN1bWUsCj4gLSAgICAuc2hhcmVfcDJtID0gYW1k X2lvbW11X3NoYXJlX3AybSwKPiAgICAgIC5jcmFzaF9zaHV0ZG93biA9IGFtZF9pb21tdV9zdXNw ZW5kLAo+ICAgICAgLmR1bXBfcDJtX3RhYmxlID0gYW1kX2R1bXBfcDJtX3RhYmxlLAo+ICB9Owo+ IGRpZmYgLS1naXQgYS94ZW4vZHJpdmVycy9wYXNzdGhyb3VnaC9pb21tdS5jIGIveGVuL2RyaXZl cnMvcGFzc3Rocm91Z2gvaW9tbXUuYwo+IGluZGV4IGNjMTI3MzUuLjVkMzI5OWEgMTAwNjQ0Cj4g LS0tIGEveGVuL2RyaXZlcnMvcGFzc3Rocm91Z2gvaW9tbXUuYwo+ICsrKyBiL3hlbi9kcml2ZXJz L3Bhc3N0aHJvdWdoL2lvbW11LmMKPiBAQCAtMzMyLDcgKzMzMiw3IEBAIHZvaWQgaW9tbXVfc2hh cmVfcDJtX3RhYmxlKHN0cnVjdCBkb21haW4qIGQpCj4gIHsKPiAgICAgIGNvbnN0IHN0cnVjdCBp b21tdV9vcHMgKm9wcyA9IGlvbW11X2dldF9vcHMoKTsKPiAgCj4gLSAgICBpZiAoIGlvbW11X2Vu YWJsZWQgJiYgaXNfaHZtX2RvbWFpbihkKSApCj4gKyAgICBpZiAoIGlvbW11X2VuYWJsZWQgJiYg aXNfaHZtX2RvbWFpbihkKSAmJiBvcHMtPnNoYXJlX3AybSkKPiAgICAgICAgICBvcHMtPnNoYXJl X3AybShkKTsKCkxvb2tzIGZpbmUgdG8gbWUsIGhvd2V2ZXIgSSdtIG5vdCBzdXJlIGlmIGl0IHdv dWxkIGJlIGNsZWFyZXIgdG8gdXNlCmlvbW11X3VzZV9oYXBfcHQoZCkgaW5zdGVhZCBvZiBjaGVj a2luZyBvcHMtPnNoYXJlX3AybSBkaXJlY3RseS4KClJvZ2VyLgoKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVu LWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==