s390/mm: allow order 10 allocations

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Get rid of FORCE_MAX_ZONEORDER which limited allocations to order 8 (= 1MB)
and use the default, which allows for order 10 (= 4MB) allocations.

Given that s390 allows less than the default this caused some memory
allocation problems more or less unique to s390 from time to time.

Note: this was originally introduced with commit 684de39bd7 ("[S390]
Fix IPL from NSS.") in order to support Named Saved Segments, which
could start/end at an arbitrary 1 megabyte boundary and also before
support for sparsemem vmemmmap was enabled.

Since NSS support is gone, but sparsemem vmemmap support is available
this limitation can go away.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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This commit is contained in:

Heiko Carstens 2020-07-14 08:22:21 +02:00

parent 3c5f2eb969

commit 771cf196cc

1 changed files with 0 additions and 4 deletions

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arch/s390/Kconfig

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