From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030389AbcHEGkU (ORCPT ); Fri, 5 Aug 2016 02:40:20 -0400 Received: from mx2.suse.de ([195.135.220.15]:42337 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030324AbcHEGkN (ORCPT ); Fri, 5 Aug 2016 02:40:13 -0400 Subject: Re: [PATCH v2 1/2] xen/x86: Move irq allocation from Xen smp_op.cpu_up() To: Boris Ostrovsky , david.vrabel@citrix.com References: <1470244948-17674-1-git-send-email-boris.ostrovsky@oracle.com> <1470244948-17674-2-git-send-email-boris.ostrovsky@oracle.com> Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org From: Juergen Gross Message-ID: Date: Fri, 5 Aug 2016 08:40:10 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2 MIME-Version: 1.0 In-Reply-To: <1470244948-17674-2-git-send-email-boris.ostrovsky@oracle.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/08/16 19:22, Boris Ostrovsky wrote: > Commit ce0d3c0a6fb1 ("genirq: Revert sparse irq locking around > __cpu_up() and move it to x86 for now") reverted irq locking > introduced by commit a89941816726 ("hotplug: Prevent alloc/free > of irq descriptors during cpu up/down") because of Xen allocating > irqs in both of its cpu_up ops. > > We can move those allocations into CPU notifiers so that original > patch can be reinstated. > > Signed-off-by: Boris Ostrovsky Reviewed-by: Juergen Gross Juergen