Re: [Xen-devel] two questions about xen on arm

["Bamvor Jian Zhang" <bjzhang@xxxxxxxx>]

 >>>Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote: 
> On Fri, 2013-11-01 at 01:54 -0600, Bamvor Jian Zhang wrote: 
> > fix destination.  
> > sorry, i sent it to the wrong address.  
> >  
> >  >>>Bamvor Jian Zhang wrote:  
> > > hi,  
> > >    
> > > recently, i got xen running on allwinner A20 successful[1], and i  
> > > have two questions:  
> > >   
> > > 1, how to get guest stack trace?  
> > > i could get the guest stack trace with the following patch, is it  
> > > make sense? 
>  
> The only issue would be that it prints 8-byte words for a 32-on-64 
> guest. That as it is much better than nothing, we can live with it for 
> sure. 
>  
> >  and i could only get the dom0 kernel trace, how could  
> > > i get the domU kernel trace?   
>  
> This code should work equally well for any guest AFAICT, what issue are 
> you seeing? 
i mean if i have booted a domU, could i get such specific domain stack trace? 
i only get the dom0 stack trace throught "xl debug-keys d" every time, even if
domU crash(user maybe want 
the domU stack at that time). or should i use other tools for it? 
>  
> > >    
> > >  #ifdef CONFIG_ARM_64  
> > >      case PSR_MODE_EL1t:  
> > >   
> > > 2, xen kernel config  
> > > i am confuse about what does "CONFIG XEN" mean. it  will check the kernel 
> > >   
>  
> > > features for dom0 and domU kernel(mix XEN_BANDEND and XXX_FRONTEND)  
> > > should we define XEN_DOM0 and XEN_DOMU configs respectively?   
>  
> I'm not sure what you mean, but yes, if you want to run Xen you should 
> enable the relevant CONFIG options, including CONFIG_XEN and I think 
> CONFIG_XEN_DOM0. 
i mean when i select the CONFIG_XEN in kernel config, both XEN_BACKEND and
XEN_xxx_FRONTEND will be selected. 
i think backend and frontend should not select at the same time, isn't it? 
>  
> Ian. 
>  
>  
> _______________________________________________ 
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> http://lists.xen.org/xen-devel 
>  
>  



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