linux-kernel - Re: [PATCH] kexec: unmap reserved pages for each error-return way

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Date:	Tue, 2 Feb 2016 21:56:32 +0800
From:	Minfei Huang <mhuang@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Dmitry Safonov <dsafonov@...tuozzo.com>,
	linux-kernel@...r.kernel.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, ebiederm@...ssion.com,
	linux-s390@...r.kernel.org, 0x7f454c46@...il.com,
	kexec@...ts.infradead.org, holzheu@...ux.vnet.ibm.com,
	dyoung@...hat.com
Subject: Re: [PATCH] kexec: unmap reserved pages for each error-return way

On 02/01/16 at 09:45pm, Andrew Morton wrote:
> On Thu, 28 Jan 2016 11:57:22 +0300 Dmitry Safonov <dsafonov@...tuozzo.com> wrote:
> 
> > On 01/28/2016 09:29 AM, Minfei Huang wrote:
> > > On 01/27/16 at 02:48pm, Dmitry Safonov wrote:
> > >> For allocation of kimage failure or kexec_prepare or load segments
> > >> errors there is no need to keep crashkernel memory mapped.
> > >> It will affect only s390 as map/unmap hook defined only for it.
> > >> As on unmap s390 also changes os_info structure let's check return code
> > >> and add info only on success.
> > > Hi, Dmitry.
> > >
> > > Previously, I sent a patch to fix this issue. You can refer it in
> > > following link.
> > >
> > > http://lists.infradead.org/pipermail/kexec/2015-July/013960.html
> > Oh, scratch my patch - I'm fine with yours, wanted to do the similar thing
> > because it has dazzled me while I was debugging around.
> 
> There were a bunch of patches tossed around in that thread but I'm not
> sure that anything actually got applied?  Perhaps some resending is
> needed.
> 

Hi, Andrew.

I will work on it to update a new patch.

Thanks
Minfei