From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Subject: Re: [patch 1/4] hotplug: Prevent alloc/free of irq descriptors during cpu up/down Date: Mon, 14 Mar 2016 09:12:31 -0400 Message-ID: <56E6B8BF.3020603__31455.5447236218$1457961380$gmane$org@oracle.com> References: <20150705170530.849428850@linutronix.de> <20150705171102.063519515@linutronix.de> <55A51F10.7010407@oracle.com> <55A532C2.4080306@oracle.com> <55A56B48.4060605@oracle.com> <55A579FD.6030000@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1afSJ3-0001zO-5f for xen-devel@lists.xenproject.org; Mon, 14 Mar 2016 13:13:09 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Thomas Gleixner Cc: Yanmin Zhang , Joerg Roedel , Peter Zijlstra , LKML , Ingo Molnar , Peter Anvin , xen-devel , Borislav Petkov , xiao jin List-Id: xen-devel@lists.xenproject.org T24gMDMvMTIvMjAxNiAwNDoxOSBBTSwgVGhvbWFzIEdsZWl4bmVyIHdyb3RlOgo+IEJvcmlzLAo+ Cj4gT24gVHVlLCAxNCBKdWwgMjAxNSwgQm9yaXMgT3N0cm92c2t5IHdyb3RlOgo+PiBPbiAwNy8x NC8yMDE1IDA0OjE1IFBNLCBUaG9tYXMgR2xlaXhuZXIgd3JvdGU6Cj4+Pj4+IFRoZSBpc3N1ZSBo ZXJlIGlzIHRoYXQgYWxsIGFyY2hpdGVjdHVyZXMgbmVlZCB0aGF0IHByb3RlY3Rpb24gYW5kIGp1 c3QKPj4+Pj4gWGVuIGRvZXMgaXJxIGFsbG9jYXRpb25zIGluIGNwdV91cC4KPj4+Pj4KPj4+Pj4g U28gbW92aW5nIHRoYXQgcHJvdGVjdGlvbiBpbnRvIGFyY2hpdGVjdHVyZSBjb2RlIGlzIG5vdCBy ZWFsbHkgYW4KPj4+Pj4gb3B0aW9uLgo+Pj4+Pgo+Pj4+Pj4+PiBPdGhlcndpc2Ugd2Ugd2lsbCBu ZWVkIHRvIGhhdmUgc29tZXRoaW5nIGxpa2UgYXJjaF9wb3N0X2NwdV91cCgpCj4+Pj4+Pj4+IGFm dGVyIHRoZSBsb2NrIGlzIHJlbGVhc2VkLgo+Pj4+PiBJJ20gbm90IHN1cmUsIHRoYXQgdGhpcyB3 aWxsIHdvcmsuIFlvdSBwcm9iYWJseSB3YW50IHRvIGRvIHRoaXMgaW4gdGhlCj4+Pj4+IGNwdSBw cmVwYXJlIHN0YWdlLCBpLmUuIGJlZm9yZSBjYWxsaW5nIF9fY3B1X3VwKCkuCj4+Pj4gRm9yIFBW IGd1ZXN0cyAodGhlIG9uZXMgdGhhdCB1c2UgeGVuX2NwdV91cCgpKSBpdCB3aWxsIHdvcmsgZWl0 aGVyIGJlZm9yZQo+Pj4+IG9yCj4+Pj4gYWZ0ZXIgX19jcHVfdXAoKS4gQXQgbGVhc3QgbXkgKHNv bWV3aGF0IGxpbWl0ZWQpIHRlc3RpbmcgZGlkbid0IHNob3cgYW55Cj4+Pj4gcHJvYmxlbXMgc28g ZmFyLgo+Pj4+Cj4+Pj4gSG93ZXZlciwgSFZNIENQVXMgdXNlIHhlbl9odm1fY3B1X3VwKCkgYW5k IGlmIHlvdSByZWFkIGNvbW1lbnRzIHRoZXJlIHlvdQo+Pj4+IHdpbGwKPj4+PiBzZWUgdGhhdCB4 ZW5fc21wX2ludHJfaW5pdCgpIG5lZWRzIHRvIGJlIGNhbGxlZCBiZWZvcmUgbmF0aXZlX2NwdV91 cCgpIGJ1dAo+Pj4+IHhlbl9pbml0X2xvY2tfY3B1KCkgKHdoaWNoIGV2ZW50dWFsbHkgY2FsbHMg aXJxX2FsbG9jX2Rlc2NzKCkpIG5lZWRzIHRvIGJlCj4+Pj4gY2FsbGVkIGFmdGVyLgo+Pj4+Cj4+ Pj4gSSB0aGluayBJIGNhbiBzcGxpdCB4ZW5faW5pdF9sb2NrX2NwdSgpIHNvIHRoYXQgdGhlIHBh cnQgdGhhdCBuZWVkcyB0byBiZQo+Pj4+IGNhbGxlZCBhZnRlciB3aWxsIGF2b2lkIGdvaW5nIGlu dG8gaXJxIGNvcmUgY29kZS4gQW5kIHRoZW4gdGhlIHJlc3Qgd2lsbAo+Pj4+IGdvCj4+Pj4gaW50 byBhcmNoX2NwdV9wcmVwYXJlKCkuCj4+PiBJIHRoaW5rIHdlIHNob3VsZCByZXZpc2l0IHRoaXMg Zm9yIDQuMy4gRm9yIDQuMiB3ZSBjYW4gZG8gdGhlIHRyaXZpYWwKPj4+IHZhcmlhbnQgYW5kIG1v dmUgdGhlIGxvY2tpbmcgaW4gbmF0aXZlX2NwdV91cCgpIGFuZCB4ODYgb25seS4geDg2IHdhcwo+ Pj4gdGhlIG9ubHkgYXJjaCBvbiB3aGljaCBzdWNoIHdyZWNrYWdlIGhhcyBiZWVuIHNlZW4gaW4g dGhlIHdpbGQsIGJ1dCB3ZQo+Pj4gc2hvdWxkIGhhdmUgdGhhdCBwcm90ZWN0aW9uIGZvciBhbGwg YXJjaHMgaW4gdGhlIGxvbmcgcnVuLgo+Pj4KPj4+IFBhdGNoIGJlbG93IHNob3VsZCBmaXggdGhl IGlzc3VlLgo+PiBUaGFua3MhIE1vc3Qgb2YgbXkgdGVzdHMgcGFzc2VkLCBJIGhhZCBhIGNvdXBs ZSBvZiBmYWlsdXJlcyBidXQgSSB3aWxsIG5lZWQgdG8KPj4gc2VlIHdoZXRoZXIgdGhleSBhcmUg cmVsYXRlZCB0byB0aGlzIHBhdGNoLgo+IERpZCB5b3UgZXZlciBjb21lIGFyb3VuZCB0byBhZGRy ZXNzIHRoYXQgaXJxIGFsbG9jYXRpb24gZnJvbSB3aXRoaW4gY3B1X3VwKCk/Cj4KPiBJIHJlYWxs eSB3YW50IHRvIGdlbmVyYWxpemUgdGhlIHByb3RlY3Rpb24gaW5zdGVhZCBvZiBjYXJyeWluZyB0 aGF0IHg4NiBvbmx5Cj4gaGFjayBmb3JldmVyLgoKU29ycnksIEkgY29tcGxldGVseSBmb3Jnb3Qg YWJvdXQgdGhpcy4gTGV0IG1lIHNlZSBob3cgSSBjYW4gdGFrZSAKYWxsb2NhdGlvbnMgZnJvbSB1 bmRlciB0aGUgbG9jay4gSSBtaWdodCBqdXN0IGJlIGFibGUgdG8gcHV0IHRoZW0gaW4gQ1BVIApu b3RpZmllcnMgLS0tIG1vc3QgaW50byBDUFVfVVBfUFJFUEFSRSBidXQgc3BpbmxvY2sgaW50ZXJy dXB0IG1heSBuZWVkIAp0byBnbyBpbnRvIENQVV9PTkxJTkUuCgotYm9yaXMKCgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBs aXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZl bAo=