From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chen Baozi Subject: Re: About arm32 address translation Date: Wed, 16 Oct 2013 18:47:22 +0800 Message-ID: References: <1381915521.21901.54.camel@kazak.uk.xensource.com> <2D233787-D3A5-48D2-9398-C122CB57C187@gmail.com> <1381919087.21901.64.camel@kazak.uk.xensource.com> <20131016102658.GA6871@cbz-workstation> <1381920078.21901.68.camel@kazak.uk.xensource.com> Mime-Version: 1.0 (Mac OS X Mail 6.6 \(1510\)) Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1381920078.21901.68.camel@kazak.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Campbell Cc: List Developer Xen List-Id: xen-devel@lists.xenproject.org On Oct 16, 2013, at 6:41 PM, Ian Campbell wrote: > On Wed, 2013-10-16 at 18:26 +0800, Chen Baozi wrote: >> On Wed, Oct 16, 2013 at 11:24:47AM +0100, Ian Campbell wrote: > >>> That suggests that the guest's SP doesn't have a mapping in the guest's >>> PTs. What's the full trace? >> >> See http://pastebin.com/DYL5gkAQ > > Yeah, not a whole lot to go on is there ;-) > > Converting the PC (c02c1544) to a code line with gdb or addr2line would > be a good start I think. Hmmm, I've posted a mail about this yesterday. The addr2line points 0xc021544 to __loop_delay in arch/arm/lib/delay-loop.S of linux kernel. > > You could also consider hacking up an earlyprintk via Xen by dropping a > xen_raw_console_write into vprintk_emit once the buffer is formatted and > see if that gets you any useful console output. Ok, I'll have a try. Thanks. Baozi > > (Somebody really needs to make a patch for proper Xen capable > earlyprintk for arm...) > > Ian. >