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

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Message-ID: <20130718124754.7453756e@mschwide>
Date:	Thu, 18 Jul 2013 12:47:54 +0200
From:	Martin Schwidefsky <schwidefsky@...ibm.com>
To:	Michael Holzheu <holzheu@...ux.vnet.ibm.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>,
	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Willeke <willeke@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org
Subject: Re: [PATCH v7 0/5] kdump: Allow ELF header creation in new kernel

On Thu, 18 Jul 2013 12:40:04 +0200
Michael Holzheu <holzheu@...ux.vnet.ibm.com> wrote:

> On Wed, 17 Jul 2013 17:42:07 -0400
> Vivek Goyal <vgoyal@...hat.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

Patches have been added to 
  git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features

They will go upstream with my next pull request.

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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