From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keir Fraser Subject: Re: [xen-unstable test] 6947: regressions - trouble: broken/fail/pass Date: Mon, 02 May 2011 14:39:19 +0100 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Jan Beulich Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On 02/05/2011 14:14, "Keir Fraser" wrote: > We'd probably also need an extra lock to protect against concurrent > radix-tree update operations (should be pretty straightforward to add > however, needing to protect *only* the radix-tree update calls). Actually this second lock would need to encompass both the logical and physical insert/delete operations. Possibly there is already a non-IRQ lock on these code paths that can contain irq_desc-locked regions. If not then such a lock would need to be added. -- Keir