From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [ARM] Bash often segfaults in Dom0 with the latest Xen Date: Tue, 11 Jun 2013 12:48:38 +0100 Message-ID: <51B70E96.1030306@linaro.org> References: <51AE6DFD.3060308@linaro.org> 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.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Christoffer Dall Cc: Andre Przywara , Ian Campbell , Stefano Stabellini , xen-devel List-Id: xen-devel@lists.xenproject.org On 06/05/2013 02:38 AM, Christoffer Dall wrote: > - All other cache accesses should be coherent across cores and are > physically indexed/physically tagged so I don't see how this could be > your issue. I was looking on KVM code and I noticed that it traps all data cache instruction. Is there any reason to trap it? I wonder if it could be the issue on Xen because we don't trap cache instruction and the manual is not clear on that. Thanks, -- Julien