From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Gao Subject: Re: [PATCH v10 5/6] passthrough/io: don't migrate pirq when it is delivered through VT-d PI Date: Mon, 20 Mar 2017 09:59:49 +0800 Message-ID: <20170320015949.GA61424@skl-2s3.sh.intel.com> References: <1489554682-6126-1-git-send-email-chao.gao@intel.com> <1489554682-6126-6-git-send-email-chao.gao@intel.com> <58CBCBCC02000078001442E2@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: <58CBCBCC02000078001442E2@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 T24gRnJpLCBNYXIgMTcsIDIwMTcgYXQgMDQ6NDM6MDhBTSAtMDYwMCwgSmFuIEJldWxpY2ggd3Jv dGU6Cj4+Pj4gT24gMTUuMDMuMTcgYXQgMDY6MTEsIDxjaGFvLmdhb0BpbnRlbC5jb20+IHdyb3Rl Ogo+PiBAQCAtNDQxLDYgKzQ0MiwxNSBAQCBpbnQgcHRfaXJxX2NyZWF0ZV9iaW5kKAo+PiAgCj4+ ICAgICAgICAgIGRlc3RfdmNwdV9pZCA9IGh2bV9naXJxX2Rlc3RfMl92Y3B1X2lkKGQsIGRlc3Qs IGRlc3RfbW9kZSk7Cj4+ICAgICAgICAgIHBpcnFfZHBjaS0+Z21zaS5kZXN0X3ZjcHVfaWQgPSBk ZXN0X3ZjcHVfaWQ7Cj4+ICsKPj4gKyAgICAgICAgcGlycV9kcGNpLT5nbXNpLnZpYV9waSA9IDA7 Cj4KPmZhbHNlCj4KPj4gKyAgICAgICAgaWYgKCBpb21tdV9pbnRwb3N0ICkKPj4gKyAgICAgICAg ewo+PiArICAgICAgICAgICAgdmNwdSA9IHBpX2ZpbmRfZGVzdF92Y3B1KGQsIGRlc3QsIGRlc3Rf bW9kZSwgZGVsaXZlcnlfbW9kZSwKPj4gKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICBwaXJxX2RwY2ktPmdtc2kuZ3ZlYyk7Cj4KPlRoaXMgaXMgbm93IG91dHNpZGUgb2YgdGhl IGV2ZW50X2xvY2stZWQgcmVnaW9uIC0gaXMgdGhpcyBzYWZlPwoKZG8geW91IG1lYW4gaXQgaXMg X19pbnNpZGVfXyB0aGUgZXZlbnRfbG9jay1lZCByZWdpb24/IEkgdGhpbmsgaXQgaXMgc2FmZQpm b3IgdGhlIGZ1bmN0aW9ucyBjYWxsZWQgYnkgcGlfZmluZF9kZXN0X3ZjcHUoKSBhcmUgYWxtb3N0 IHNhbWUgd2l0aApodm1fZ2lycV9kZXN0XzJfdmNwdV9pZC4KCj4KPkZ1cnRoZXJtb3JlLCBsb29r aW5nIGF0IHRoaXMsIHdoeSBkbyB3ZSBuZWVkIHRvIGNhbGwgdGhpcyBmdW5jdGlvbgo+YXQgYWxs IGluIG90aGVyIHRoYW4gdGhlIExvd2VzdFByaW8gY2FzZT8gSXQgbG9va3MgYXMgaWYgd2UgY291 bGQKPmVhc2lseSB1c2Ugd2hhdCBodm1fZ2lycV9kZXN0XzJfdmNwdV9pZCgpIHByb3ZpZGVzIGlu IHRoZSBGaXhlZAo+Y2FzZS4KCkFncmVlLiB3ZSBjYW4gZGVsZXRlIHBpX2ZpbmRfZGVzdF92Y3B1 KCkgYW5kIGZvciBMb3dlc3RQcmlvIGNhc2UgCndoZW4gVlQtZCBQSSBlbmFibGVkLCB3ZSBjYWxs IHZlY3Rvcl9oYXNoaW5nX2Rlc3QoKSBkaXJlY3RseS4KCj4KPj4gKyAgICAgICAgICAgIGlmICgg dmNwdSApCj4+ICsgICAgICAgICAgICAgICAgcGlycV9kcGNpLT5nbXNpLnZpYV9waSA9IDE7Cj4K PnRydWUKPgo+PiArICAgICAgICB9Cj4+ICAgICAgICAgIHNwaW5fdW5sb2NrKCZkLT5ldmVudF9s b2NrKTsKPj4gICAgICAgICAgaWYgKCBkZXN0X3ZjcHVfaWQgPj0gMCApCj4+ICAgICAgICAgICAg ICBodm1fbWlncmF0ZV9waXJxcyhkLT52Y3B1W2Rlc3RfdmNwdV9pZF0pOwo+Cj4oY29udGludWlu ZyBmcm9tIGFib3ZlKSBUaGlzIGNvdWxkIHRoZW4gdXNlIHZjcHUgdG9vLgoKSSBkb24ndCB1bmRl cnN0YW5kLiBJbiB0aGlzIHBhdGNoLCB2Y3B1IGlzIGFsd2F5cyBudWxsIHdoZW4gVlQtZCBQSSBp cyBub3QKZW5hYmxlZC4gRG8geW91IG1lYW4gc29tZXRoaW5nIGxpa2UgYmVsb3c6IAoKaWYgKCBk ZXN0X3ZjcHVfaWQgPj0gMCApCiAgICB2Y3B1ID0gZC0+dmNwdVtkZXN0X3ZjcHVfaWRdOwppZiAo IGlvbW11X2ludHBvc3QgJiYgKCF2Y3B1KSAmJiAoZGVsaXZlcnlfbW9kZSA9PSBkZXN0X0xvd2Vz dFByaW8pICkKewogICAgdmNwdSA9IHZlY3Rvcl9oYXNoaW5nX2Rlc3QoZCwgZGVzdCwgZGVzdF9t b2RlLHBpcnFfZHBjaS0+Z21zaS5ndmVjKTsKLi4uCn0Kc3Bpbl91bmxvY2soJmQtPmV2ZW50X2xv Y2spOwppZiAoIHZjcHUgKQogICAgaHZtX21pZ3JhdGVfcGlycXModmNwdSk7CgpUaGFuaywKQ2hh bwoKPgo+PiAtLS0gYS94ZW4vaW5jbHVkZS94ZW4vaHZtL2lycS5oCj4+ICsrKyBiL3hlbi9pbmNs dWRlL3hlbi9odm0vaXJxLmgKPj4gQEAgLTYzLDYgKzYzLDcgQEAgc3RydWN0IGh2bV9nbXNpX2lu Zm8gewo+PiAgICAgIHVpbnQzMl90IGd2ZWM7Cj4+ICAgICAgdWludDMyX3QgZ2ZsYWdzOwo+PiAg ICAgIGludCBkZXN0X3ZjcHVfaWQ7IC8qIC0xIDptdWx0aS1kZXN0LCBub24tbmVnYXRpdmU6IGRl c3RfdmNwdV9pZCAqLwo+PiArICAgIGJvb2wgdmlhX3BpOyAvKiBkaXJlY3RseSBkZWxpdmVyIHRv IGd1ZXN0IHZpYSBWVC1kIFBJPyAqLwo+Cj5Xb3VsZG4ndCB0aGUgZmllbGQgbmFtZSBwZXJoYXBz IGJldHRlciBiZSAob3IgaW5jbHVkZSkgInBvc3RlZCI/Cj4KPkphbgo+CgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0 Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK