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

[Andrew Morton]

On Thu, 28 Jan 2016 11:57:22 +0300 Dmitry Safonov <dsafonov at virtuozzo.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.