Re: [PATCH RFC 2/2] s390/mm: don't set ARCH_KEEP_MEMBLOCK

Heiko Carstens
2020-06-26T16:32:25Z

On Fri, Apr 17, 2020 at 05:01:51PM +0200, David Hildenbrand wrote:
> Commit 50be63450728 ("s390/mm: Convert bootmem to memblock") mentions
> "The original bootmem allocator is getting replaced by memblock. To
> cover the needs of the s390 kdump implementation the physical
> memory list is used."
>
> zcore was converted to use resources instead of memblocks.
> memblock_discard() will *not* mess with "physmem", only with "memory" and
> "reserved" memblocks. So, that data will stay after early boot, to be
> used in arch/s390/kernel/crash_dump.c to create the ELF header from
> inside the 2nd (a.k.a. dumping) kernel.
>
> We no longer need ARCH_KEEP_MEMBLOCK.
>
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Cc: Vasily Gorbik <gor@linux.ibm.com>
> Cc: Christian Borntraeger <borntraeger@de.ibm.com>
> Cc: Philipp Rudo <prudo@linux.ibm.com>
> Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
> arch/s390/Kconfig | 1 -
> 1 file changed, 1 deletion(-)

Applied, thanks!