From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 1/2] xen: fix a (latent) cpupool-related race during domain destroy Date: Thu, 14 Jul 2016 10:37:33 +0100 Message-ID: <37bfb624-111a-32ed-ebfa-1f0be387dba0@citrix.com> References: <146847830772.25458.3001435525572823491.stgit@Solace.fritz.box> <146847849719.25458.17913062138178199099.stgit@Solace.fritz.box> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bNd5O-0003PV-5q for xen-devel@lists.xenproject.org; Thu, 14 Jul 2016 09:37:38 +0000 In-Reply-To: <146847849719.25458.17913062138178199099.stgit@Solace.fritz.box> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Dario Faggioli , xen-devel@lists.xenproject.org Cc: Juergen Gross , George Dunlap , Jan Beulich List-Id: xen-devel@lists.xenproject.org T24gMTQvMDcvMTYgMDc6NDEsIERhcmlvIEZhZ2dpb2xpIHdyb3RlOgo+IFNvLCBkdXJpbmcgZG9t YWluIGRlc3RydWN0aW9uLCB3ZSBkbzoKPiAgY3B1cG9vbF9ybV9kb21haW4oKSAgICBbIGluIGRv bWFpbl9kZXN0cm95KCkgXQo+ICBzY2hlZF9kZXN0cm95X2RvbWFpbigpIFsgaW4gY29tcGxldGVf ZG9tYWluX2Rlc3Ryb3koKSBdCj4KPiBUaGVyZWZvcmUsIHRoZXJlJ3MgYSB3aW5kb3cgZHVyaW5n IHdoaWNoLCBmcm9tIHRoZQo+IHNjaGVkdWxlcidzIHBvaW50IG9mIHZpZXcsIGEgZG9tYWluIGlz IHN0aWxsIHRoZXJlLCBidXQKPiB3aXRob3V0IGl0IGJlaW5nIHBhcnQgb2YgYW55IGNwdXBvb2wu Cj4KPiBJbiBmYWN0LCBjcHVwb29sX3JtX2RvbWFpbigpIGRvZXMgZC0+Y3B1cG9vbD1OVUxMLAo+ IGFuZCB3ZSBkb24ndCBhbGxvdyBhbnl0aGluZyBsaWtlIHRoYXQgdG8gaG9sZCwgZm9yCj4gYW55 IGRvbWFpbiB3aXRoIHRoZSBvbmx5IGV4Y2VwdGlvbiBvZiB0aGUgaWRsZSBvbmUuCj4gQW5kIGlm IHdlIHN0dWJsZSB1cG9uIHN1Y2ggYSBkb21haW4sIHRoZXJlIGFyZSBBU1NFUlQoKXMKPiBhbmQg QlVHX09OKClzIHRoYXQgZG8gdHJpZ2dlci4KPgo+IFRoaXMgbmV2ZXIgaGFwcGVucywgcmlnaHQg bm93LCBidXQgb25seSBiZWNhdXNlIG5vbmUKPiBvZiB0aGUgZnVuY3Rpb25zIGNvbnRhaW5pbmcg b25lIG9mIHRob3NlIHNhbml0eSBjaGVja3MKPiBhcmUgY2FsbGVkIGR1cmluZyB0aGUgYWJvdmUg ZGVzY3JpYmVkIHdpbmRvdy4gSG93ZXZlciwKPiBDcmVkaXQyIGdvZXMgKGR1cmluZyBsb2FkIGJh bGFuY2luZykgdGhyb3VnaCB0aGUgbGlzdAo+IG9mIGRvbWFpbnMgYXNzaWduZWQgdG8gYSBjZXJ0 YWluIHJ1bnF1ZXVlLCBhbmQgbm90IG9ubHkKPiB0aGUgb25lcyB0aGF0IGFyZSBydW5uaW5nIG9y IHJ1bm5hYmxlLiBJZiBvbmUgb2YgdGhvc2UKPiBkb21haW5zIGhhZCBjcHVwb29sX3JtX2RvbWFp bigpIGNhbGxlZCB1cG9uIGl0c2VsZgo+IGFscmVhZHksIGFuZCB3ZSBjYWxsIG9uZSBvZiB0aG9z ZSBmdW5jdGlvbnMgd2hpY2ggY2hlY2tzCj4gZm9yIGQtPmNwdXBvb2whPU5VTEwuLi4gQm9vbSEK Pgo+IEZvciBleGFtcGxlLCB3aGlsZSBkb2luZyBDcmVkaXQyIGRldmVsb3BtZW50LCBjYWxsaW5n Cj4gc29tZXRoaW5nIHNpbWlsYXIgdG8gX192Y3B1X2hhc19zb2Z0X2FmZmluaXR5KCkgZnJvbQo+ IGJhbGFuY2VfbG9hZCgpLCBtYWtlcyBgeGwgc2h1dGRvd24gPGRvbWlkPicgcmVsaWFibHkKPiBj cmFzaCAodGhpcyBpcyBob3cgSSBkaXNjb3ZlcmVkIHRoaXMpLgo+Cj4gT24gdGhlIG90aGVyIGhh bmQsIGNwdXBvb2xfcm1fZG9tYWluKCkgIm9ubHkiIGRvZXMKPiBjcHVwb29sIHJlbGF0ZWQgYm9v a2tlZXBpbmcsIGFuZCB0aGVyZSdzIG5vIGhhcm0KPiBwb3N0cG9uaW5nIGl0IGEgbGl0dGxlIGJp dC4KPgo+IEZpbmFsbHksIGNvbnNpZGVyaW5nIHRoYXQsIGR1cmluZyBkb21haW4gaW5pdGlhbGl6 YXRpb24sCj4gd2UgZG86Cj4gIGNwdXBvb2xfYWRkX2RvbWFpbigpCj4gIHNjaGVkX2luaXRfZG9t YWluKCkKPgo+IEl0IGxvb2tzIGxpa2UgaXQgbWFrZXMgbXVjaCBtb3JlIHNlbnNlIGZvciB0aGUg ZG9tYWluCj4gZGVzdHJveSBwYXRoIHRvIGxvb2sgbGlrZSB0aGUgb3Bwb3NpdGUgb2YgaXQsIGku ZS46Cj4gIHNjaGVkX2Rlc3Ryb3lfZG9tYWluKCkKPiAgY3B1cG9vbF9ybV9kb21haW4oKQo+Cj4g VGhpcyBwYXRjaCBkb2VzIHRoYXQsIGFuZCBpdCdzIGNvbnNpZGVyZWQgd29ydGgsIGFzIGl0Cj4g Zml4ZXMgYSBidWcsIGV2ZW4gaWYgb25seSBhIGxhdGVudCBvbmUuCj4KPiBTaWduZWQtb2ZmLWJ5 OiBEYXJpbyBGYWdnaW9saSA8ZGFyaW8uZmFnZ2lvbGlAY2l0cml4LmNvbT4KCkFzIHRoZSBjcHVw b29sIGJvb2trZWVwaW5nIGlzIHZlcnkgY2xvc2VseSByZWxhdGVkIHRvIHRoZSBzY2hlZHVsZXIK Ym9va2tlZXBpbmcsIGhvdyBhYm91dCBoYXZpbmcgdGhlIHNjaGVkXypfZG9tYWluKCkgZnVuY3Rp b25zIGludm9sdmUgdGhlCmNwdXBvb2xfKl9kb21haW4oKSBmdW5jdGlvbnM/CgpUaGF0IHdheSBp dCBjYW4ndCBnZXQgb3V0LW9mLW9yZGVyIGxpa2UgdGhpcyBpbiB0aGUgZnV0dXJlLgoKfkFuZHJl dwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRl dmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhl bi5vcmcveGVuLWRldmVsCg==