From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Gao Subject: Re: [PATCH v11 1/6] passthrough: don't migrate pirq when it is delivered through VT-d PI Date: Fri, 31 Mar 2017 11:27:42 +0800 Message-ID: <20170331032742.GA87624@skl-2s3.sh.intel.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> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <58DE4643020000780014B21C@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: Andrew Cooper , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gRnJpLCBNYXIgMzEsIDIwMTcgYXQgMDQ6MDY6MjdBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4+Pj4gT24gMzEuMDMuMTcgYXQgMDQ6NDIsIDxjaGFvLmdhb0BpbnRlbC5jb20+IHdyb3Rl Ogo+PiBPbiBGcmksIE1hciAzMSwgMjAxNyBhdCAwMzozMTo0N0FNIC0wNjAwLCBKYW4gQmV1bGlj aCB3cm90ZToKPj4+Pj4+IE9uIDI5LjAzLjE3IGF0IDA3OjExLCA8Y2hhby5nYW9AaW50ZWwuY29t PiB3cm90ZToKPj4+PiBAQCAtNDQyLDE3ICszOTcsMjQgQEAgaW50IHB0X2lycV9jcmVhdGVfYmlu ZCgKPj4+PiAgICAgICAgICBkZXN0X3ZjcHVfaWQgPSBodm1fZ2lycV9kZXN0XzJfdmNwdV9pZChk LCBkZXN0LCBkZXN0X21vZGUpOwo+Pj4+ICAgICAgICAgIHBpcnFfZHBjaS0+Z21zaS5kZXN0X3Zj cHVfaWQgPSBkZXN0X3ZjcHVfaWQ7Cj4+Pj4gICAgICAgICAgc3Bpbl91bmxvY2soJmQtPmV2ZW50 X2xvY2spOwo+Pj4+ICsKPj4+PiArICAgICAgICBwaXJxX2RwY2ktPmdtc2kucG9zdGVkID0gZmFs c2U7Cj4+Pj4gKyAgICAgICAgdmNwdSA9IChkZXN0X3ZjcHVfaWQgPj0gMCkgPyBkLT52Y3B1W2Rl c3RfdmNwdV9pZF0gOiBOVUxMOwo+Pj4+ICsgICAgICAgIGlmICggaW9tbXVfaW50cG9zdCAmJiAo ZGVsaXZlcnlfbW9kZSA9PSBkZXN0X0xvd2VzdFByaW8pICkKPj4+Cj4+PldoeSBhZ2FpbiB3b3Vs ZCBkZXN0X0ZpeGVkIG5vdCBhbGxvdyBwb3N0ZWQgZGVsaXZlcnk/IFRoaXMgbmVlZHMKPj4gCj4+ IE5vIHRoaXMgcmVzdHJpY3Rpb24uIEZvciBkZXN0X0ZpeGVkIGNhc2UsIGh2bV9naXJxX2Rlc3Rf Ml92Y3B1X2lkKCkgZ2l2ZXMKPj4gdGhlIHNhbWUgb3V0cHV0IHdpdGggcGlfZmluZF9kZXN0X3Zj cHUoKS4gVGh1cyB3ZSBkb24ndCBjYWxsIGl0IGFnYWluLCBqdXN0Cj4+IHVzZSB0aGUgcmV0dXJu IHZhbHVlIG9mIGh2bV9naXJxX2Rlc3RfMl92Y3B1X2lkKCkuCj4KPkJ1dCBhcyBwb2ludGVkIG91 dCB5b3UgZG9uJ3Qgc2V0IHRoZSBuZXcgcG9zdGVkIGZpZWxkIGluIHRoYXQgY2FzZS4KPgoKSW5k ZWVkLgoKSG93IGFib3V0IHRoaXM6CglwaXJxX2RwY2ktPmdtc2kucG9zdGVkID0gZmFsc2U7CiAg ICAgICAgaWYgKCBpb21tdV9pbnRwb3N0ICkKICAgICAgICB7CiAgICAgICAgICAgIHZjcHUgPSAo ZGVzdF92Y3B1X2lkID49IDApID8gZC0+dmNwdVtkZXN0X3ZjcHVfaWRdIDogTlVMTDsKICAgICAg ICAgICAgaWYgKCBkZWxpdmVyeV9tb2RlID09IGRlc3RfTG93ZXN0UHJpbyApCiAgICAgICAgICAg ICAgICB2Y3B1ID0gdmVjdG9yX2hhc2hpbmdfZGVzdChkLCBkZXN0LCBkZXN0X21vZGUsCiAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBwaXJxX2RwY2ktPmdtc2kuZ3Zl Yyk7CiAgICAgICAgICAgIGlmICggdmNwdSApCiAgICAgICAgICAgICAgICBwaXJxX2RwY2ktPmdt c2kucG9zdGVkID0gdHJ1ZTsKICAgICAgICB9Cgo+Pj5yZWNvcmRpbmcgaW4gYSBjb21tZW50LCBp ZiB0aGVyZSByZWFsbHkgaXMgc3VjaCBhIHJlc3RyaWN0aW9uLiBPciBkaWQKPj4+eW91IHJlYWxs eSBtZWFuIHRvIHBsYWNlIC4uLgo+Pj4KPj4+PiArICAgICAgICB7Cj4+Pj4gKyAgICAgICAgICAg IHZjcHUgPSB2ZWN0b3JfaGFzaGluZ19kZXN0KGQsIGRlc3QsIGRlc3RfbW9kZSwKPj4+PiArICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgcGlycV9kcGNpLT5nbXNpLmd2ZWMp Owo+Pj4+ICsgICAgICAgICAgICBpZiAoIHZjcHUgKQo+Pj4+ICsgICAgICAgICAgICAgICAgcGly cV9kcGNpLT5nbXNpLnBvc3RlZCA9IHRydWU7Cj4+Pgo+Pj4uLi4gdGhpcyAuLi4KPj4+Cj4+Pj4g KyAgICAgICAgfQo+Pj4KPj4+Li4uIGFmdGVyIHRoaXMgYnJhY2UgKHdoaWNoIHRoZW4gd291bGRu J3QgYmUgbmVlZGVkIGFueW1vcmUpPyBJZgo+Pj5zbywgaXMgdGhlcmUgYW55IHBvaW50IGNhbGxp bmcgdmVjdG9yX2hhc2hpbmdfZGVzdCgpIHdoZW4gdmNwdSBpcwo+Pj5hbHJlYWR5IG5vbi1OVUxM IHByaW9yIHRvIHRoZSBpZigpPwo+Pj4KPj4+VGhpcyB0aGVuIGFsc28gcmFpc2VzIHRoZSBxdWVz dGlvbiB3aGV0aGVyIHRoZSBjYWxsIHRvCj4+Pmh2bV9naXJxX2Rlc3RfMl92Y3B1X2lkKCkgaXMg YWN0dWFsbHkgbGVnaXRpbWF0ZSBmb3IgbG93ZXN0Cj4+PnByaW9yaXR5IGRlbGl2ZXJ5IG1vZGUu Cj4+IAo+PiBGb3IgbG93ZXN0IHByaW9yaXR5IGRlbGl2ZXJ5IG1vZGUsIGlmIFZULWQgUEkgaXMg ZW5hYmxlZCwgdGhlIHJlc3VsdCAodGhlCj4+IGRlc3RpbmF0aW9uIHZjcHUpIGlzIG92ZXJyaWRl ZCBieSB2ZWN0b3JfaGFzaGluZ19kZXN0KCkgdG8ga2VlcCB0aGUgCj4+IGV4aXN0aW5nIGJlaGF2 aW9yLiBJIHRoaW5rIHRoZSBvbmx5IHBvaW50IHdlIHNob3VsZCBrZWVwIGluIG1pbmQgaXMKPj4g Zm9yIGNhc2VzIG90aGVyIHRoYW4gbG93ZXN0IHByaW9yaXR5IGRlbGl2ZXJ5IG1vZGUsIHBpX2Zp bmRfZGVzdF92Y3B1KCkKPj4gYW5kIGh2bV9naXJxX2Rlc3RfMl92Y3B1X2lkKCkgZ2l2ZSB0aGUg c2FtZSBkZXN0aW5hdGlvbiB2Y3B1Lgo+Cj5XZWxsLCB0aGUgb3ZlcnJpZGUgaXMgZG9uZSBmb3Ig dGhlIGlvbW11X2ludHBvc3QgY2FzZS4gVGhlIHJlbWFyawo+b24gaHZtX2dpcnFfZGVzdF8yX3Zj cHVfaWQoKSwgaG93ZXZlciwgd2FzIG1hZGUgaW4gZ2VuZXJhbC4KCk9rLiBZb3UgbWVhbnQgdGhl IG1ldGhvZCB1c2luZyBpbiBodm1fZ2lycV9kZXN0XzJfdmNwdV9pZCgpIG1heSBub3QgbWF0Y2gg dGhlIG1ldGhvZAp1c2VkIGJ5IHJlYWwgaGFyZHdhcmUuIEkgd2lsbCBjaGVjayBpdC4KClRoYW5r cwpDaGFvCgo+Cj5KYW4KPgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpo dHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==