From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH v11 1/6] passthrough: don't migrate pirq when it is delivered through VT-d PI Date: Fri, 31 Mar 2017 04:38:02 -0600 Message-ID: <58DE4DAA020000780014B298@prv-mh.provo.novell.com> References: <1490764315-7162-1-git-send-email-chao.gao@intel.com> <1490764315-7162-2-git-send-email-chao.gao@intel.com> <58DE3E23020000780014B19C@prv-mh.provo.novell.com> <20170331024211.GA86540@skl-2s3.sh.intel.com> <58DE4643020000780014B21C@prv-mh.provo.novell.com> <20170331032742.GA87624@skl-2s3.sh.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20170331032742.GA87624@skl-2s3.sh.intel.com> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Chao Gao Cc: Andrew Cooper , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDMxLjAzLjE3IGF0IDA1OjI3LCA8Y2hhby5nYW9AaW50ZWwuY29tPiB3cm90ZToKPiBP biBGcmksIE1hciAzMSwgMjAxNyBhdCAwNDowNjoyN0FNIC0wNjAwLCBKYW4gQmV1bGljaCB3cm90 ZToKPj4+Pj4gT24gMzEuMDMuMTcgYXQgMDQ6NDIsIDxjaGFvLmdhb0BpbnRlbC5jb20+IHdyb3Rl Ogo+Pj4gT24gRnJpLCBNYXIgMzEsIDIwMTcgYXQgMDM6MzE6NDdBTSAtMDYwMCwgSmFuIEJldWxp Y2ggd3JvdGU6Cj4+Pj4+Pj4gT24gMjkuMDMuMTcgYXQgMDc6MTEsIDxjaGFvLmdhb0BpbnRlbC5j b20+IHdyb3RlOgo+Pj4+PiBAQCAtNDQyLDE3ICszOTcsMjQgQEAgaW50IHB0X2lycV9jcmVhdGVf YmluZCgKPj4+Pj4gICAgICAgICAgZGVzdF92Y3B1X2lkID0gaHZtX2dpcnFfZGVzdF8yX3ZjcHVf aWQoZCwgZGVzdCwgZGVzdF9tb2RlKTsKPj4+Pj4gICAgICAgICAgcGlycV9kcGNpLT5nbXNpLmRl c3RfdmNwdV9pZCA9IGRlc3RfdmNwdV9pZDsKPj4+Pj4gICAgICAgICAgc3Bpbl91bmxvY2soJmQt PmV2ZW50X2xvY2spOwo+Pj4+PiArCj4+Pj4+ICsgICAgICAgIHBpcnFfZHBjaS0+Z21zaS5wb3N0 ZWQgPSBmYWxzZTsKPj4+Pj4gKyAgICAgICAgdmNwdSA9IChkZXN0X3ZjcHVfaWQgPj0gMCkgPyBk LT52Y3B1W2Rlc3RfdmNwdV9pZF0gOiBOVUxMOwo+Pj4+PiArICAgICAgICBpZiAoIGlvbW11X2lu dHBvc3QgJiYgKGRlbGl2ZXJ5X21vZGUgPT0gZGVzdF9Mb3dlc3RQcmlvKSApCj4+Pj4KPj4+Pldo eSBhZ2FpbiB3b3VsZCBkZXN0X0ZpeGVkIG5vdCBhbGxvdyBwb3N0ZWQgZGVsaXZlcnk/IFRoaXMg bmVlZHMKPj4+IAo+Pj4gTm8gdGhpcyByZXN0cmljdGlvbi4gRm9yIGRlc3RfRml4ZWQgY2FzZSwg aHZtX2dpcnFfZGVzdF8yX3ZjcHVfaWQoKSBnaXZlcwo+Pj4gdGhlIHNhbWUgb3V0cHV0IHdpdGgg cGlfZmluZF9kZXN0X3ZjcHUoKS4gVGh1cyB3ZSBkb24ndCBjYWxsIGl0IGFnYWluLCBqdXN0Cj4+ PiB1c2UgdGhlIHJldHVybiB2YWx1ZSBvZiBodm1fZ2lycV9kZXN0XzJfdmNwdV9pZCgpLgo+Pgo+ PkJ1dCBhcyBwb2ludGVkIG91dCB5b3UgZG9uJ3Qgc2V0IHRoZSBuZXcgcG9zdGVkIGZpZWxkIGlu IHRoYXQgY2FzZS4KPj4KPiAKPiBJbmRlZWQuCj4gCj4gSG93IGFib3V0IHRoaXM6Cj4gCXBpcnFf ZHBjaS0+Z21zaS5wb3N0ZWQgPSBmYWxzZTsKPiAgICAgICAgIGlmICggaW9tbXVfaW50cG9zdCAp Cj4gICAgICAgICB7Cj4gICAgICAgICAgICAgdmNwdSA9IChkZXN0X3ZjcHVfaWQgPj0gMCkgPyBk LT52Y3B1W2Rlc3RfdmNwdV9pZF0gOiBOVUxMOwo+ICAgICAgICAgICAgIGlmICggZGVsaXZlcnlf bW9kZSA9PSBkZXN0X0xvd2VzdFByaW8gKQo+ICAgICAgICAgICAgICAgICB2Y3B1ID0gdmVjdG9y X2hhc2hpbmdfZGVzdChkLCBkZXN0LCBkZXN0X21vZGUsCj4gICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgIHBpcnFfZHBjaS0+Z21zaS5ndmVjKTsKPiAgICAgICAgICAg ICBpZiAoIHZjcHUgKQo+ICAgICAgICAgICAgICAgICBwaXJxX2RwY2ktPmdtc2kucG9zdGVkID0g dHJ1ZTsKPiAgICAgICAgIH0KCkkgdGhpbmsgdGhlIHNldHRpbmcgb2YgdmNwdSBuZWVkcyB0byBz dGF5IG91dHNpZGUgdGhlIGlmKCksIGJ1dCBvdGhlcgp0aGFuIHRoYXQgdGhlIGFib3ZlIGxvb2tz IHJlYXNvbmFibGUgYXQgYSBmaXJzdCBnbGFuY2UuCgo+Pj4+VGhpcyB0aGVuIGFsc28gcmFpc2Vz IHRoZSBxdWVzdGlvbiB3aGV0aGVyIHRoZSBjYWxsIHRvCj4+Pj5odm1fZ2lycV9kZXN0XzJfdmNw dV9pZCgpIGlzIGFjdHVhbGx5IGxlZ2l0aW1hdGUgZm9yIGxvd2VzdAo+Pj4+cHJpb3JpdHkgZGVs aXZlcnkgbW9kZS4KPj4+IAo+Pj4gRm9yIGxvd2VzdCBwcmlvcml0eSBkZWxpdmVyeSBtb2RlLCBp ZiBWVC1kIFBJIGlzIGVuYWJsZWQsIHRoZSByZXN1bHQgKHRoZQo+Pj4gZGVzdGluYXRpb24gdmNw dSkgaXMgb3ZlcnJpZGVkIGJ5IHZlY3Rvcl9oYXNoaW5nX2Rlc3QoKSB0byBrZWVwIHRoZSAKPj4+ IGV4aXN0aW5nIGJlaGF2aW9yLiBJIHRoaW5rIHRoZSBvbmx5IHBvaW50IHdlIHNob3VsZCBrZWVw IGluIG1pbmQgaXMKPj4+IGZvciBjYXNlcyBvdGhlciB0aGFuIGxvd2VzdCBwcmlvcml0eSBkZWxp dmVyeSBtb2RlLCBwaV9maW5kX2Rlc3RfdmNwdSgpCj4+PiBhbmQgaHZtX2dpcnFfZGVzdF8yX3Zj cHVfaWQoKSBnaXZlIHRoZSBzYW1lIGRlc3RpbmF0aW9uIHZjcHUuCj4+Cj4+V2VsbCwgdGhlIG92 ZXJyaWRlIGlzIGRvbmUgZm9yIHRoZSBpb21tdV9pbnRwb3N0IGNhc2UuIFRoZSByZW1hcmsKPj5v biBodm1fZ2lycV9kZXN0XzJfdmNwdV9pZCgpLCBob3dldmVyLCB3YXMgbWFkZSBpbiBnZW5lcmFs Lgo+IAo+IE9rLiBZb3UgbWVhbnQgdGhlIG1ldGhvZCB1c2luZyBpbiBodm1fZ2lycV9kZXN0XzJf dmNwdV9pZCgpIG1heSBub3QgbWF0Y2ggCj4gdGhlIG1ldGhvZAo+IHVzZWQgYnkgcmVhbCBoYXJk d2FyZS4gSSB3aWxsIGNoZWNrIGl0LgoKSSBtZWFuIHRoYXQgdGhlIG1ldGhvZCB1c2VkIHRoZXJl IGlzIHByZXR0eSBjbGVhcmx5ICJmaXhlZCIgbW9kZQpoYW5kbGluZy4gVGhhbmtzIGZvciBjaGVj a2luZy4KCkphbgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0cHM6 Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=