From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Gao Subject: Re: [PATCH V3 6/29] tools/libxl: Add a user configurable parameter to control vIOMMU attributes Date: Fri, 20 Oct 2017 09:36:57 +0800 Message-ID: <20171020013657.GB74825@op-computing> References: <1506049330-11196-1-git-send-email-tianyu.lan@intel.com> <1506049330-11196-7-git-send-email-tianyu.lan@intel.com> <20171019094922.atwcoadaibotcmhk@dhcp-3-128.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20171019094922.atwcoadaibotcmhk@dhcp-3-128.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Roger Pau =?iso-8859-1?Q?Monn=E9?= Cc: Lan Tianyu , tim@xen.org, kevin.tian@intel.com, sstabellini@kernel.org, wei.liu2@citrix.com, konrad.wilk@oracle.com, George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, xen-devel@lists.xen.org, jbeulich@suse.com List-Id: xen-devel@lists.xenproject.org T24gVGh1LCBPY3QgMTksIDIwMTcgYXQgMTA6NDk6MjJBTSArMDEwMCwgUm9nZXIgUGF1IE1vbm7D qSB3cm90ZToKPk9uIFRodSwgU2VwIDIxLCAyMDE3IGF0IDExOjAxOjQ3UE0gLTA0MDAsIExhbiBU aWFueXUgd3JvdGU6Cj4+IEZyb206IENoYW8gR2FvIDxjaGFvLmdhb0BpbnRlbC5jb20+Cj4+IAo+ PiBBIGZpZWxkLCB2aW9tbXVfaW5mbywgaXMgYWRkZWQgdG8gc3RydWN0IGxpYnhsX2RvbWFpbl9i dWlsZF9pbmZvLiBTZXZlcmFsCj4+IGF0dHJpYnV0ZXMgY2FuIGJlIHNwZWNpZmllZCBieSBndWVz dCBjb25maWcgZmlsZSBmb3IgdmlydHVhbCBJT01NVS4gVGhlc2UKPj4gYXR0cmlidXRlcyBhcmUg dXNlZCBmb3IgRE1BUiBjb25zdHJ1Y3Rpb24gYW5kIHZJT01NVSBjcmVhdGlvbi4KPgo+SU1ITyB0 aGlzIHNob3VsZCBjb21lIG11Y2ggbGF0ZXIgaW4gdGhlIHNlcmllcywgaWRlYWxseSB5b3Ugd291 bGQKPmludHJvZHVjZSB0aGUgeGwvbGlieGwgY29kZSBpbiB0aGUgbGFzdCBwYXRjaGVzLCB0b2dl dGhlciB3aXRoIHRoZQo+eGwuY2ZnIG1hbiBwYWdlIGNoYW5nZS4KCkl0IGNhbiBiZSBwdXQgdG8g dGhlIGVuZCBvZiB0aGlzIHNlcmllcy4gQnV0IEkgcHJlZmVyIHRvIGludHJvZHVjZSB0aGUKdklP TU1VIGZyb20gdXAgdG8gZG93biAobWVhbnMgdGhlIHVzZSBpbnRlcmZhY2UgZ29lcyBmaXJzdCBh bmQgdGhlbiBob3cKdG8gaW1wbGVtZW50IGEgdklPTU1VIHN0ZXAgYnkgc3RlcCkgZm9yIGl0IG1h eSBiZSBlYXNpZXIgdG8gdW5kZXJzdGFuZC4gCgo+Cj4+IGRpZmYgLS1naXQgYS90b29scy9saWJ4 bC9saWJ4bF9jcmVhdGUuYyBiL3Rvb2xzL2xpYnhsL2xpYnhsX2NyZWF0ZS5jCj4+IGluZGV4IDkx MjM1ODUuLmRlY2Q3YTggMTAwNjQ0Cj4+IC0tLSBhL3Rvb2xzL2xpYnhsL2xpYnhsX2NyZWF0ZS5j Cj4+ICsrKyBiL3Rvb2xzL2xpYnhsL2xpYnhsX2NyZWF0ZS5jCj4+IEBAIC0yNyw2ICsyNyw4IEBA Cj4+ICAKPj4gICNpbmNsdWRlIDx4ZW4teHNtL2ZsYXNrL2ZsYXNrLmg+Cj4+ICAKPj4gKyNkZWZp bmUgVklPTU1VX1ZURF9CQVNFX0FERFIgICAgICAgIDB4ZmVkOTAwMDBVTEwKPgo+VGhpcyBzaG91 bGQgYmUgaW4gbGlieGxfYXJjaC5oIHNlZSBMQVBJQ19CQVNFX0FERFJFU1MuCgpBZ3JlZS4KCj4K Pj4gKwo+PiAgaW50IGxpYnhsX19kb21haW5fY3JlYXRlX2luZm9fc2V0ZGVmYXVsdChsaWJ4bF9f Z2MgKmdjLAo+PiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBsaWJ4 bF9kb21haW5fY3JlYXRlX2luZm8gKmNfaW5mbykKPj4gIHsKPj4gQEAgLTU5LDYgKzYxLDQ3IEBA IHZvaWQgbGlieGxfX3JkbV9zZXRkZWZhdWx0KGxpYnhsX19nYyAqZ2MsIGxpYnhsX2RvbWFpbl9i dWlsZF9pbmZvICpiX2luZm8pCj4+ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgTElCWExf UkRNX01FTV9CT1VOREFSWV9NRU1LQl9ERUZBVUxUOwo+PiAgfQo+PiAgCj4+ICtzdGF0aWMgaW50 IGxpYnhsX192aW9tbXVfc2V0X2RlZmF1bHQobGlieGxfX2djICpnYywKPj4gKyAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICBsaWJ4bF9kb21haW5fYnVpbGRfaW5mbyAqYl9pbmZv KQo+PiArewo+PiArICAgIGludCBpOwo+PiArCj4+ICsgICAgaWYgKCFiX2luZm8tPm51bV92aW9t bXVzKQo+PiArICAgICAgICByZXR1cm4gMDsKPj4gKwo+PiArICAgIGZvciAoaSA9IDA7IGkgPCBi X2luZm8tPm51bV92aW9tbXVzOyBpKyspIHsKPj4gKyAgICAgICAgbGlieGxfdmlvbW11X2luZm8g KnZpb21tdSA9ICZiX2luZm8tPnZpb21tdVtpXTsKPj4gKwo+PiArICAgICAgICBpZiAobGlieGxf ZGVmYm9vbF9pc19kZWZhdWx0KHZpb21tdS0+aW50cmVtYXApKQo+PiArICAgICAgICAgICAgbGli eGxfZGVmYm9vbF9zZXQoJnZpb21tdS0+aW50cmVtYXAsIHRydWUpOwo+PiArCj4+ICsgICAgICAg IGlmICghbGlieGxfZGVmYm9vbF92YWwodmlvbW11LT5pbnRyZW1hcCkpIHsKPj4gKyAgICAgICAg ICAgIExPR0UoRVJST1IsICJDYW5ub3QgY3JlYXRlIG9uZSB2aXJ0dWFsIFZURCB3aXRob3V0IGlu dHJlbWFwIik7Cj4+ICsgICAgICAgICAgICByZXR1cm4gRVJST1JfSU5WQUw7Cj4+ICsgICAgICAg IH0KPj4gKwo+PiArICAgICAgICBpZiAodmlvbW11LT50eXBlID09IExJQlhMX1ZJT01NVV9UWVBF X0lOVEVMX1ZURCkgewo+PiArICAgICAgICAgICAgLyoKPj4gKyAgICAgICAgICAgICAqIElmIHRo ZXJlIGFyZSBtdWx0aXBsZSB2SU9NTVVzLCB3ZSBuZWVkIGFycmFuZ2UgYWxsIHZJT01NVXMgdG8K Pj4gKyAgICAgICAgICAgICAqIGF2b2lkIG92ZXJsYXAuIFB1dCBhIGNoZWNrIGhlcmUgaW4gY2Fz ZSB3ZSBnZXQgaGVyZSBmb3IgbXVsdGlwbGUKPj4gKyAgICAgICAgICAgICAqIHZJT01NVXMgY2Fz ZS4KPj4gKyAgICAgICAgICAgICAqLwo+PiArICAgICAgICAgICAgaWYgKGJfaW5mby0+bnVtX3Zp b21tdXMgPiAxKSB7Cj4+ICsgICAgICAgICAgICAgICAgTE9HRShFUlJPUiwgIk11bHRpcGxlIHZJ T01NVXMgc3VwcG9ydCBpcyB1bmRlciBpbXBsZW1lbnRhdGlvbiIpOwo+Cj5zL0xPR0UvTE9HLyBM T0dFIHNob3VsZCBvbmx5IGJlIHVzZWQgd2hlbiBlcnJubyBpcyBzZXQgKHdoaWNoIGlzIG5vdAo+ dGhlIGNhc2UgaGVyZSkuCgp5ZXMuCgo+Cj4+ICsgICAgICAgICAgICAgICAgcmV0dXJuIEVSUk9S X0lOVkFMOwo+PiArICAgICAgICAgICAgfQo+PiArCj4+ICsgICAgICAgICAgICAvKiBTZXQgZGVm YXVsdCB2YWx1ZXMgdG8gdW5leHBvc2VkIGZpZWxkcyAqLwo+PiArICAgICAgICAgICAgdmlvbW11 LT5iYXNlX2FkZHIgPSBWSU9NTVVfVlREX0JBU0VfQUREUjsKPj4gKwo+PiArICAgICAgICAgICAg LyogU2V0IGRlc2lyZWQgY2FwYmlsaXRpZXMgKi8KPj4gKyAgICAgICAgICAgIHZpb21tdS0+Y2Fw ID0gVklPTU1VX0NBUF9JUlFfUkVNQVBQSU5HOwo+Cj5JJ20gbm90IHN1cmUgd2hldGhlciB0aGlz IGNvZGUgc2hvdWxkIGJlIGluIGxpYnhsX3g4Ni5jLCBidXQKPmxpYnhsX19kb21haW5fYnVpbGRf aW5mb19zZXRkZWZhdWx0IGlzIGFscmVhZHkgcXVpdGUgbWVzc2VkIHVwLCBzbyBJCj5ndWVzcyBp dCdzIGZpbmUuCj4KPj4gKyAgICAgICAgfQo+Cj5TaG91bGRuJ3QgdGhpcyBiZToKPgo+c3dpdGNo KHZpb21tdS0+dHlwZSkgewo+Y2FzZSBMSUJYTF9WSU9NTVVfVFlQRV9JTlRFTF9WVEQ6Cj4gICAg Li4uCj4gICAgYnJlYWs7Cj4KPmRlZmF1bHQ6Cj4gICAgcmV0dXJuIEVSUk9SX0lOVkFMOwo+fQo+ Cj5TbyB0aGF0IHlvdSBjYXRjaCB0eXBlIGJlaW5nIHNldCB0byBhbiBpbnZhbGlkIHZJT01NVSB0 eXBlPwoKc3VyZS4gV2lsbCB1cGRhdGUuCgo+Cj4+ICsgICAgaWYgKGRfY29uZmlnLT5iX2luZm8u bnVtX3Zpb21tdXMgPiAxKSB7Cj4+ICsgICAgICAgIHJldCA9IEVSUk9SX0lOVkFMOwo+PiArICAg ICAgICBMT0dEKEVSUk9SLCBkb21pZCwgIkNhbm5vdCBzdXBwb3J0IG11bHRpcGxlIHZJT01NVXMi KTsKPj4gKyAgICAgICAgZ290byBlcnJvcl9vdXQ7Cj4+ICsgICAgfQo+Cj5FciwgeW91IGFscmVh ZHkgaGF2ZSB0aGlzIGNoZWNrIGluIGxpYnhsX192aW9tbXVfc2V0X2RlZmF1bHQsIGFuZCBpbgo+ YW55IGNhc2UgSSB3b3VsZCBqdXN0IHJlbHkgb24gdGhlIGh5cGVydmlzb3IgZmFpbGluZyB0byBj cmVhdGUgbW9yZQo+dGhhbiBvbmUgdklPTU1VIHBlciBkb21haW4sIHJhdGhlciB0aGFuIGFkZGlu ZyB0aGUgc2FtZSBjaGVjayBoZXJlLgoKSXQgaXMgZmluZSB0byBtZS4gV2lsbCByZW1vdmUgYWxs IGNoZWNrcyBhZ2FpbnN0IHZpb21tdSBudW1iZXJzIGluCnRvb2xzdGFjay4KClRoYW5rcwpjaGFv CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2 ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVu Lm9yZy94ZW4tZGV2ZWwK