Re: XEN/ARM Cortex-A72: Unable to copy the kernel in the hwdom memory

[Julien Grall <julien@xxxxxxx>]

On 18/11/2020 14:56, Anda-alexandra Dorneanu wrote:
> Hi Leo,
Hi,

I think you forgot to CC Leo :).

> > I am trying to set up XEN on a ARM Cortex-A72 (NXP LS1028A) and running into 
> > some problems here.
> > While some of them I could solve on my own, the following error is hard for me 
> > to understand and solve.
> > I would be grateful for some hints e.g. about some specific nodes in the device 
> > tree that I might need to take care of.
> >
> > (XEN) *** LOADING DOMAIN 0 ***
> > (XEN) Loading Domd0 kernel from boot module @ 0000000081200000
> > (XEN) Allocating 1:1 mappings totalling 512MB for dom0:
> > (XEN) BANK[0] 0x000000c0000000-0x000000e0000000 (512MB)
> > (XEN) Grant table range: 0x00000081000000-0x00000081040000
> > (XEN) Allocating PPI 16 for event channel interrupt
> > (XEN) Loading zImage from 0000000081200000 to 00000000c0080000-00000000c1597008
> > (XEN)
> > (XEN) ****************************************
> > (XEN) Panic on CPU 0:
> > (XEN) Unable to copy the kernel in the hwdom memory
> > (XEN) ****************************************
> >
> > For me, the memory ranges given look good. Or is there something here I 
> > overlooked?
> >
> > My XEN boot arguments: "console=dtuart dtuart=serial0 dom0_mem=512M dom0_max_vcpus=1 
> > bootscrub=0 vwfi=native sched=null"
> > Full boot log is attached (does this work here?).
> > If anything else is needed to at least make a best guess what the problem is, 
> > let me know.
> >
> > I would really appreciate the help!
> > Thanks & best regards,
> > Leo
> I encountered the same issue. A possible workaround is to remove the gpu node 
> from the dts.
> The issue occurs due to the entire low memory bank being reserved for this 
> device.
Xen 4.12 and onwards should be able to discover reserved memory regions.

How are the regions described in the device-tree?

Cheers,

--
Julien Grall