From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: Ideas Re: [PATCH v14 1/2] vmx: VT-d posted-interrupt core logic handling Date: Mon, 7 Mar 2016 11:21:33 +0000 Message-ID: References: <1456714816-3876-1-git-send-email-feng.wu@intel.com> <1456714816-3876-2-git-send-email-feng.wu@intel.com> <20160304220031.GA28111@char.us.oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20160304220031.GA28111@char.us.oracle.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Konrad Rzeszutek Wilk Cc: Kevin Tian , Keir Fraser , Andrew Cooper , Dario Faggioli , "xen-devel@lists.xen.org" , Jan Beulich , Feng Wu List-Id: xen-devel@lists.xenproject.org T24gRnJpLCBNYXIgNCwgMjAxNiBhdCAxMDowMCBQTSwgS29ucmFkIFJ6ZXN6dXRlayBXaWxrCjxr b25yYWQud2lsa0BvcmFjbGUuY29tPiB3cm90ZToKPj4gKy8qIEhhbmRsZSBWVC1kIHBvc3RlZC1p bnRlcnJ1cHQgd2hlbiBWQ1BVIGlzIGJsb2NrZWQuICovCj4+ICtzdGF0aWMgdm9pZCBwaV93YWtl dXBfaW50ZXJydXB0KHN0cnVjdCBjcHVfdXNlcl9yZWdzICpyZWdzKQo+PiArewo+PiArICAgIHN0 cnVjdCBhcmNoX3ZteF9zdHJ1Y3QgKnZteCwgKnRtcDsKPj4gKyAgICBzcGlubG9ja190ICpsb2Nr ID0gJnBlcl9jcHUodm14X3BpX2Jsb2NraW5nLCBzbXBfcHJvY2Vzc29yX2lkKCkpLmxvY2s7Cj4+ ICsgICAgc3RydWN0IGxpc3RfaGVhZCAqYmxvY2tlZF92Y3B1cyA9Cj4+ICsgICAgICAgICAgICAg JnBlcl9jcHUodm14X3BpX2Jsb2NraW5nLCBzbXBfcHJvY2Vzc29yX2lkKCkpLmxpc3Q7Cj4+ICsK Pj4gKyAgICBhY2tfQVBJQ19pcnEoKTsKPj4gKyAgICB0aGlzX2NwdShpcnFfY291bnQpKys7Cj4+ ICsKPj4gKyAgICBzcGluX2xvY2sobG9jayk7Cj4+ICsKPj4gKyAgICAvKgo+PiArICAgICAqIFhY WDogVGhlIGxlbmd0aCBvZiB0aGUgbGlzdCBkZXBlbmRzIG9uIGhvdyBtYW55IHZDUFUgaXMgY3Vy cmVudAo+PiArICAgICAqIGJsb2NrZWQgb24gdGhpcyBzcGVjaWZpYyBwQ1BVLiBUaGlzIG1heSBo dXJ0IHRoZSBpbnRlcnJ1cHQgbGF0ZW5jeQo+PiArICAgICAqIGlmIHRoZSBsaXN0IGdyb3dzIHRv IHRvbyBtYW55IGVudHJpZXMuCj4+ICsgICAgICovCj4+ICsgICAgbGlzdF9mb3JfZWFjaF9lbnRy eV9zYWZlKHZteCwgdG1wLCBibG9ja2VkX3ZjcHVzLCBwaV9ibG9ja2luZy5saXN0KQo+PiArICAg IHsKPgo+Cj4gTXkgcmVjb2xsZWN0aW9uIG9mIHRoZSAnbW9zdC1ob3JyaWJsZScgY2FzZSBvZiB0 aGlzIGJlaW5nIHJlYWxseSBiYWQgaXMgd2hlbgo+IHRoZSBzY2hlZHVsZXIgcHV0cyB0aGUgdkNQ VTAgYW5kIFZDUFUxIG9mIHRoZSBndWVzdCBvbiB0aGUgc2FtZSBwQ1BVIChhcyBhbiBleGFtcGxl KQo+IGFuZCB0aGV5IHJvdW5kLXJvYmluIGFsbCB0aGUgdGltZS4KPgo+IDxoYW5kd2F2aW5nPgo+ IFdvdWxkIGl0IGJlIHBlcmhhcHMgcG9zc2libGUgdG8gaGF2ZSBhbiBhbnRpLWFmZmluaXR5IGZs YWcgdG8gZGV0ZXIgdGhlCj4gc2NoZWR1bGVyIGZyb20gdGhpcz8gVGhhdCBpcyB3aGljaGV2ZXIg c3RydWN0IHZjcHUgaGFzICdhbnRpLWFmZmluaXR5JyBmbGFnCj4gc2V0IC0gdGhlIHNjaGVkdWxl ciB3aWxsIHRyeSBhcyBtdWNoIGFzIGl0IGNhbiBfdG8gbm90XyBzY2hlZHVsZSB0aGUgJ3N0cnVj dCB2Y3B1Jwo+IGlmIHRoZSBwcmV2aW91cyAnc3RydWN0IHZjcHUnIGhhZCB0aGlzIGZsYWcgYXMg d2VsbCBvbiB0aGlzIHBDUFU/CgpXZWxsIGhhdmluZyB2Y3B1cyBmcm9tIHRoZSBzYW1lIGd1ZXN0 IG9uIHRoZSBzYW1lIHBjcHUgaXMgcHJvYmxlbWF0aWMKZm9yIGEgbnVtYmVyIG9mIHJlYXNvbnMg LS0gc3BpbmxvY2tzIGZpcnN0IGFuZCBmb3JlbW9zdC4gIFNvIGluCmdlbmVyYWwgdHJ5aW5nIHRv IGF2b2lkIHRoYXQgd291bGQgYmUgdXNlZnVsIGZvciBtb3N0IGd1ZXN0cy4KClRoZSB0aGluZyB3 aXRoIHNjaGVkdWxpbmcgaXMgdGhhdCBpdCdzIGEgYml0IGxpa2UgZWNvbm9taWNzOiBpdCBzZWVt cwpzaW1wbGUgYnV0IGl0J3MgYWN0dWFsbHkgbm90IGF0IGFsbCBvYnZpb3VzIHdoYXQgdGhlIGVt ZXJnZW50IGJlaGF2aW9yCndpbGwgYmUgZnJvbSBhZGRpbmcgYSBzaW1wbGUgcnVsZS4gOi0pCgpP biB0aGUgd2hvbGUgaXQgc2VlbXMgdW5saWtlbHkgdGhhdCBoYXZpbmcgdHdvIHZjcHVzIG9uIGEg c2luZ2xlIHBjcHUKaXMgYSAic3RhYmxlIiBzaXR1YXRpb24gLS0gaXQncyBsaWtlbHkgdG8gYmUg cHJldHR5IHRyYW5zaWVudCwgYW5kCnRodXMgbm90IGhhdmUgYSBtYWpvciBpbXBhY3Qgb24gcGVy Zm9ybWFuY2UuCgpUaGF0IHNhaWQsIHRoZSBsb2FkIGJhbGFuY2luZyBjb2RlIGZyb20gY3JlZGl0 MiAqc2hvdWxkKiwgaW4gdGhlb3J5LAptYWtlIGl0IGVhc2llciB0byBpbXBsZW1lbnQgdGhpcyBz b3J0IG9mIHRoaW5nOyBpdCBoYXMgdGhlIGNvbmNlcHQgb2YKYSAiY29zdCIgdGhhdCBpdCdzIHRy eWluZyB0byBtaW5pbWl6ZTsgc28geW91IGNvdWxkIGluIHRoZW9yeSBhZGQgYQoiY29zdCIgdG8g Y29uZmlndXJhdGlvbnMgd2hlcmUgdmNwdXMgZnJvbSB0aGUgc2FtZSBwcm9jZXNzb3Igc2hhcmUg dGhlCnNhbWUgcGNwdS4gIFRoZW4gaXQncyBub3QgYSBoYXJkLWFuZC1mYXN0IHJ1bGU6IGlmIHlv dSBoYXZlIG1vcmUgdmNwdXMKdGhhbiBwY3B1cywgdGhlIHNjaGVkdWxlciB3aWxsIGp1c3QgZGVh bC4gOi0pCgpCdXQgSSB0aGluayBzb21lIHByb2ZpbGluZyBpcyBpbiBvcmRlciBiZWZvcmUgYW55 b25lIGRvZXMgc2VyaW91cyB3b3JrIG9uIHRoaXMuCgogLUdlb3JnZQoKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApY ZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK