Re: [Xen-users] Booting dom0 on OMAP5432 board

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2014-05-16 at 11:52 -0400, John Paul Walters wrote:
> >>
> >> Iâve used the latest xen and linux git tree when writing the wiki.
> >>
> >> Here is a hack to make dom0 write to the hvc console directly (canât
> >> remember why I didnât put it on wikiâ).
> >
> > IIRC, this patch is to just enable earlyprintk for dom0. Without this patch,
> > the normal printk should work also.
> >
> > Baozi
> 
> Thanks Boazi, Ian.
> 
> I applied the earlyprintk patch to the most recent kernel, 3.15.0-rc5.
>  The earlyprintk patch doesn't give me any more information, but it
> looks like it's getting stuck inside panic_smp_self_stop().  The
> combination that I'm using now is kernel 3.15.0-rc5 with the most
> recent Xen bits.  Any suggestions?

Follow it up the call chain until you get to a function with some
context -- e.g. panic() takes a string argunment which you could print.

Ian.

> 
> 0xc003a158 is in panic_smp_self_stop (kernel/panic.c:58).
> 53 * Stop ourself in panic -- architecture code may override this
> 54 */
> 55 void __weak panic_smp_self_stop(void)
> 56 {
> 57 while (1)
> 58 cpu_relax();
> 59 }
> 60
> 61 /**
> 62 * panic - halt the system



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