Re: [PATCH v7 0/5] kdump: Allow ELF header creation in new kernel

Michael Holzheu
2013-07-18T10:40:34Z

On Wed, 17 Jul 2013 17:42:07 -0400
Vivek Goyal <vgoyal@redhat.com> wrote:
> On Wed, Jul 17, 2013 at 06:00:49PM +0200, Michael Holzheu wrote:

[snip]

> > But this is all additional effort now and would not be necessary if we
> > integrate this patch series in 3.11.
> >
> > Perhaps we should let Andrew decide here.
>
> Hi Michael,
>
> Given the fact that andrew too prefers a fix to get s390 working at this
> stage can we modify s390 copy_from_oldmem() to be able to copy to
> vmalloc() memory area.
>
> For mmap(), let us disable it on s390. And rest of the cleanups w.r.t
> ELF header swap etc, let us now target that for 3.12.
>
> Sounds reasonable?

Hi Vivek,

Ok this is not our preferred solution but we can't expect that life is
always easy ;-)

Our s390 kernel maintainer Martin Schwidefsky agreed to send the following
two patches upstream for 3.11:

* s390/kdump: Disable mmap for s390
* s390/kdump: Allow copy_oldmem_page() copy to virtual memory

@Andrew:

Would you then take the "ELF header in new memory" patch series for 3.12?

Regards,
Michael