Issues with the first PowerPC updates for the kernel 6.1

[Andrew Donnellan]

On Thu, 2022-10-13 at 11:42 +0200, Christian Zigotzky wrote:
> Hi Christophe,
> 
> Thanks a lot for your answer. OK, now, I know, that I don’t need to
> test it. After the boot of the latest git kernel, my system was
> extremely damaged. Some config files has a size of several gigabytes
> for example the resolv.conf. I tried to repair this Debian system but
> without any success.
> I copied with dd and Netcat via network another rootfs from another
> computer to the damaged partition.
> I don’t have the time to do it always again and again after a bad
> bisect result.
> I will wait some weeks and try it again.

You're right, I was in a rush, saw a processor that wasn't IBM and
assumed it was 32-bit without thinking too much!


Andrew


> 
> Cheers,
> Christian
> 
> > On 13. Oct 2022, at 09:28, Christophe Leroy <
> > christophe.leroy at csgroup.eu> wrote:
> > 
> > 
> > 
> > > Le 13/10/2022 à 09:03, Christian Zigotzky a écrit :
> > > Hi Andrew,
> > > 
> > > Does this patch also affect 64-bit kernels?
> > > 
> > > We use often 32-bit userlands with 64-bit kernels.
> > 
> > As far as I understand, it was already correct for 32-bit userlands
> > with 
> > 64 bit kernels, aka compat.
> > 
> > The patch applies the same approach for 32 bit kernels, as
> > explained in 
> > the commit message : "Fix this by having 32-bit kernels share those
> > syscall definitions with compat."
> > 
> > Christophe
> > 
> > > 
> > > Cheers,
> > > Christian
> > > 
> > > > > On 12. Oct 2022, at 09:56, Andrew Donnellan <
> > > > > ajd at linux.ibm.com> wrote:
> > > > 
> > > > On Wed, 2022-10-12 at 08:51 +0200, Christian Zigotzky wrote:
> > > > > Hi All,
> > > > > 
> > > > > I use the Nemo board with a PASemi PA6T CPU and have some
> > > > > issues
> > > > > since the first PowerPC updates for the kernel 6.1.
> > > > > 
> > > > > I successfully compiled the git kernel with the first PowerPC
> > > > > updates
> > > > > two days ago.
> > > > > 
> > > > > Unfortunately this kernel is really dangerous. Many things
> > > > > for
> > > > > example Network Manager and LightDM don't work anymore and
> > > > > produced
> > > > > several gigabyte of config files till the partition has been
> > > > > filled.
> > > > > 
> > > > > I deleted some files like the resolv.conf that had a size
> > > > > over 200
> > > > > GB!
> > > > > 
> > > > > Unfortunately, MintPPC was still damaged. For example LightDM
> > > > > doesn't
> > > > > work anymore and the MATE desktop doesn't display any icons
> > > > > anymore
> > > > > because Caja wasn't able to reserve memory anymore.
> > > > > 
> > > > > In this case, bisecting isn't an option and I have to wait
> > > > > some
> > > > > weeks. It is really difficult to find the issue if the
> > > > > userland will
> > > > > damaged again and again.
> > > > 
> > > > Could you try with
> > > > https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20221012035335.866440-1-npiggin@gmail.com/
> > > > to see if your issues are related to that?
> > > > 
> > > > Andrew
> > > > 
> > > > -- 
> > > > Andrew Donnellan    OzLabs, ADL Canberra
> > > > ajd at linux.ibm.com   IBM Australia Limited
> > > > 
> 

-- 
Andrew Donnellan    OzLabs, ADL Canberra
ajd at linux.ibm.com   IBM Australia Limited