From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [PATCH v2] xen: avoid crash in disable_hotplug_cpu Date: Thu, 6 Sep 2018 14:45:57 -0400 Message-ID: References: <20180906063712.28639-1-olaf@aepfle.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fxzGs-0000zd-Uh for xen-devel@lists.xenproject.org; Thu, 06 Sep 2018 18:44:50 +0000 In-Reply-To: <20180906063712.28639-1-olaf@aepfle.de> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Olaf Hering , xen-devel@lists.xenproject.org Cc: Juergen Gross , open list List-Id: xen-devel@lists.xenproject.org T24gMDkvMDYvMjAxOCAwMjozNyBBTSwgT2xhZiBIZXJpbmcgd3JvdGU6Cj4gVGhlIGNvbW1hbmQg J3hsIHZjcHUtc2V0IDAgMCcsIGlzc3VlZCBpbiBkb20wLCB3aWxsIGNyYXNoIGRvbTA6Cj4KPiBC VUc6IHVuYWJsZSB0byBoYW5kbGUga2VybmVsIE5VTEwgcG9pbnRlciBkZXJlZmVyZW5jZSBhdCAw MDAwMDAwMDAwMDAwMmQ4Cj4gUEdEIDAgUDREIDAKPiBPb3BzOiAwMDAwIFsjMV0gUFJFRU1QVCBT TVAgTk9QVEkKPiBDUFU6IDcgUElEOiA2NSBDb21tOiB4ZW53YXRjaCBOb3QgdGFpbnRlZCA0LjE5 LjAtcmMyLTEuZ2E5NDYyZGItZGVmYXVsdCAjMSBvcGVuU1VTRSBUdW1ibGV3ZWVkICh1bnJlbGVh c2VkKQo+IEhhcmR3YXJlIG5hbWU6IEludGVsIENvcnBvcmF0aW9uIFM1NTIwVVIvUzU1MjBVUiwg QklPUyBTNTUwMC44NkIuMDEuMDAuMDA1MC4wNTA2MjAxMDE2MDUgMDUvMDYvMjAxMAo+IFJJUDog ZTAzMDpkZXZpY2Vfb2ZmbGluZSsweDkvMHhiMAo+IENvZGU6IDc3IDI0IDAwIGU5IGNlIGZlIGZm IGZmIDQ4IDhiIDEzIGU5IDY4IGZmIGZmIGZmIDQ4IDhiIDEzIGU5IDI5IGZmIGZmIGZmIDQ4IDhi IDEzIGU5IGVhIGZlIGZmIGZmIDkwIDY2IDY2IDY2IDY2IDkwIDQxIDU0IDU1IDUzIDxmNj4gODcg ZDggMDIgMDAgMDAgMDEgMGYgODUgODggMDAgMDAgMDAgNDggYzcgYzIgMjAgMDkgNjAgODEgMzEg ZjYKPiBSU1A6IGUwMmI6ZmZmZmM5MDA0MGYyN2U4MCBFRkxBR1M6IDAwMDEwMjAzCj4gUkFYOiAw MDAwMDAwMDAwMDAwMDAwIFJCWDogMDAwMDAwMDAwMDAwMDAwMCBSQ1g6IDAwMDAwMDAwMDAwMDAw MDAKPiBSRFg6IGZmZmY4ODAxZjM4MDAwMDAgUlNJOiBmZmZmYzkwMDQwZjI3ZTcwIFJESTogMDAw MDAwMDAwMDAwMDAwMAo+IFJCUDogMDAwMDAwMDAwMDAwMDAwMCBSMDg6IGZmZmZmZmZmODIwZTQ3 YjMgUjA5OiAwMDAwMDAwMDAwMDAwMDAwCj4gUjEwOiAwMDAwMDAwMDAwMDA3ZmYwIFIxMTogMDAw MDAwMDAwMDAwMDAwMCBSMTI6IGZmZmZmZmZmODIyZTZkMzAKPiBSMTM6IGRlYWQwMDAwMDAwMDAy MDAgUjE0OiBkZWFkMDAwMDAwMDAwMTAwIFIxNTogZmZmZmZmZmY4MTU4YjRlMAo+IEZTOiAgMDAw MDdmZmE1OTUxNThjMCgwMDAwKSBHUzpmZmZmODgwMWYzOWMwMDAwKDAwMDApIGtubEdTOjAwMDAw MDAwMDAwMDAwMDAKPiBDUzogIGUwMzMgRFM6IDAwMDAgRVM6IDAwMDAgQ1IwOiAwMDAwMDAwMDgw MDUwMDMzCj4gQ1IyOiAwMDAwMDAwMDAwMDAwMmQ4IENSMzogMDAwMDAwMDFkOTYwMjAwMCBDUjQ6 IDAwMDAwMDAwMDAwMDI2NjAKPiBDYWxsIFRyYWNlOgo+ICBoYW5kbGVfdmNwdV9ob3RwbHVnX2V2 ZW50KzB4YjUvMHhjMAo+ICB4ZW53YXRjaF90aHJlYWQrMHg4MC8weDE0MAo+ICA/IHdhaXRfd29r ZW4rMHg4MC8weDgwCj4gIGt0aHJlYWQrMHgxMTIvMHgxMzAKPiAgPyBrdGhyZWFkX2NyZWF0ZV93 b3JrZXJfb25fY3B1KzB4NDAvMHg0MAo+ICByZXRfZnJvbV9mb3JrKzB4M2EvMHg1MAo+Cj4gVGhp cyBoYXBwZW5zIGJlY2F1c2UgaGFuZGxlX3ZjcHVfaG90cGx1Z19ldmVudCBpcyBjYWxsZWQgdHdp Y2UuIEluIHRoZQo+IGZpcnN0IGl0ZXJhdGlvbiBjcHVfcHJlc2VudCBpcyBzdGlsbCB0cnVlLCBp biB0aGUgc2Vjb25kIGl0ZXJhdGlvbgo+IGNwdV9wcmVzZW50IGlzIGZhbHNlIHdoaWNoIGNhdXNl cyBnZXRfY3B1X2RldmljZSB0byByZXR1cm4gTlVMTC4KPiBJbiBjYXNlIG9mIGNwdSMwLCBjcHVf b25saW5lIGlzIGFwcGFyZW50bHkgYWx3YXlzIHRydWUuCj4KPiBGaXggdGhpcyBjcmFzaCBieSBj aGVja2luZyBpZiB0aGUgY3B1IGNhbiBiZSBob3RwbHVnZ2VkLCB3aGljaCBpcyBmYWxzZQo+IGZv ciBhIGNwdSB0aGF0IHdhcyBqdXN0IHJlbW92ZWQuCj4KPiBTaWduZWQtb2ZmLWJ5OiBPbGFmIEhl cmluZyA8b2xhZkBhZXBmbGUuZGU+Cj4gLS0tCj4gIGRyaXZlcnMveGVuL2NwdV9ob3RwbHVnLmMg fCAyICsrCj4gIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKykKPgo+IGRpZmYgLS1naXQg YS9kcml2ZXJzL3hlbi9jcHVfaG90cGx1Zy5jIGIvZHJpdmVycy94ZW4vY3B1X2hvdHBsdWcuYwo+ IGluZGV4IGQ0MjY1YzhlYmIyMi4uYmYxZTQxZWQ5ZDQxIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMv eGVuL2NwdV9ob3RwbHVnLmMKPiArKysgYi9kcml2ZXJzL3hlbi9jcHVfaG90cGx1Zy5jCj4gQEAg LTE5LDYgKzE5LDggQEAgc3RhdGljIHZvaWQgZW5hYmxlX2hvdHBsdWdfY3B1KGludCBjcHUpCj4g IAo+ICBzdGF0aWMgdm9pZCBkaXNhYmxlX2hvdHBsdWdfY3B1KGludCBjcHUpCj4gIHsKPiArCWlm ICghY3B1X2lzX2hvdHBsdWdnYWJsZShjcHUpKQoKCkkgdGhpbmsgd2Ugc2hvdWxkIGNoZWNrIGJv dGggdGhpcyBhbmQgbnVtX29ubGluZV9jcHVzKCkgIT0gMC4KCkV2ZW4gdGhvdWdoIEkgZG9uJ3Qg YmVsaWV2ZSBjcHUwX2hvdHBsdWdnYWJsZSBjdXJyZW50bHkgd29ya3MsIGF0IHNvbWUKcG9pbnQg aXQgbWlnaHQuCgotYm9yaXMKCgo+ICsJCXJldHVybjsKPiAgCWlmIChjcHVfb25saW5lKGNwdSkp IHsKPiAgCQlsb2NrX2RldmljZV9ob3RwbHVnKCk7Cj4gIAkJZGV2aWNlX29mZmxpbmUoZ2V0X2Nw dV9kZXZpY2UoY3B1KSk7CgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVj dC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1k ZXZlbA==