[BISECTED] kexec regression on PowerBook G4

[Aaro Koskinen]

Hi,

On Fri, May 24, 2019 at 08:08:36AM +0200, Christophe Leroy wrote:
> >Le 24/05/2019 à 00:23, Aaro Koskinen a écrit :
> >>Unfortunately still no luck... The crash is pretty much the same with
> >>both
> >>changes.
> >
> >Right. In fact change_page_attr() does nothing because this part of RAM is
> >mapped by DBATs so v_block_mapped() returns not NULL.
> >
> >So, we have to set an IBAT for this area. I'll try and send you a new
> >patch for that before noon (CET).
> >
> 
> patch sent out. In the patch I have also added a printk to print the buffer
> address, so if the problem still occurs, we'll know if the problem is really
> at the address of the buffer or if we are wrong from the beginning.

Reboot code buffer at ef0c3000
Bye!
BUG: Unable to handle kernel instruction fetch
Faulting instruction address: 0xef0c3000

A.