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SubjectRe: Boot failures with "mm/sparse: Remove CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER" on powerpc (was Re: mmotm 2018-07-10-16-50 uploaded)
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Baoquan He <bhe@redhat.com> writes:
> On 07/11/18 at 10:49pm, Michael Ellerman wrote:
>> akpm@linux-foundation.org writes:
>> > The mm-of-the-moment snapshot 2018-07-10-16-50 has been uploaded to
>> >
>> > http://www.ozlabs.org/~akpm/mmotm/
>> ...
>>
>> > * mm-sparse-add-a-static-variable-nr_present_sections.patch
>> > * mm-sparsemem-defer-the-ms-section_mem_map-clearing.patch
>> > * mm-sparsemem-defer-the-ms-section_mem_map-clearing-fix.patch
>> > * mm-sparse-add-a-new-parameter-data_unit_size-for-alloc_usemap_and_memmap.patch
>> > * mm-sparse-optimize-memmap-allocation-during-sparse_init.patch
>> > * mm-sparse-optimize-memmap-allocation-during-sparse_init-checkpatch-fixes.patch
>>
>> > * mm-sparse-remove-config_sparsemem_alloc_mem_map_together.patch
>>
>> This seems to be breaking my powerpc pseries qemu boots.
...
>
> Have you tried reverting that patch and building kernel to test again?
> Does it work?

Yes.

Reverting that patch on top of 98be45067040799a801e6ce52d8bf4659a153893
works as before.

cheers
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