[patch 0/2] ARM: Disable outer cache before kexec call -V3

[Gadiyar, Anand]

Andrea Paterniani wrote:
> Hi,
>      I have applied your patches to kernel 2.6.35-rc4 running on my beagleboard.
> I'm using kexec-tools-2.0.1.
> 
> My u-boot bootargs is:
>      console=ttyS2,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait ip=192.168.2.13::255.255.255.0
> 
> To restart the system I type:
>  > sync
>  > kexec -l /boot/zImage --append="console=ttyS2,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait ip=192.168.2.13::255.255.255.0"
>  > kexec -e
> 
> Not every time the system restart.
> In some cases no output on the console after the following:
>      Bye!
>      Uncompressing Linux... done, booting the kernel.
> 
> Any idea?
> 

Can you try building your kernel with CONFIG_EARLY_PRINTK,
and add the word "earlyprintk" to your bootargs?



> Il 05/07/2010 13.52, Thomas Gleixner ha scritto:
> > The following patch series addresses the problem that the kexec code
> > does not disable the outer cache before disabling the inner cache and
> > jumping into the new kernel. This results in random crashes of the new
> > kernel.
> >
> > Changes since version 2:
> >
> >   - Use CLEAN_INV_WAY in l2x0_flush_all according to Catalin
> >
> >   - Rename outer_cache_disable() to outer_disable()
> >
> >   - Added a  BUG_ON() when l2x0_inv_all() is called with L2 enabled.
> >
> > Thanks,
> >
> >       tglx
> >
> >
> >