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authorAnshuman Khandual <anshuman.khandual@arm.com>2021-06-30 18:51:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-30 20:47:30 -0700
commitcebc774fdc9cb39b959968fbfd7aabe7a8a5154c (patch)
treed0c894015bb5774ec4420499529d3614b187bdbe /arch/s390
parente346e6688c4aa18588f2c6a75b572d8ca7a65f5f (diff)
mm/thp: make ARCH_ENABLE_SPLIT_PMD_PTLOCK dependent on PGTABLE_LEVELS > 2
ARCH_ENABLE_SPLIT_PMD_PTLOCK is irrelevant unless there are more than two page table levels including PMD (also per Documentation/vm/split_page_table_lock.rst). Make this dependency explicit on remaining platforms i.e x86 and s390 where ARCH_ENABLE_SPLIT_PMD_PTLOCK is subscribed. Link: https://lkml.kernel.org/r/1622013501-20409-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com> # s390 Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 707afbcd81c2..4098637a52fc 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -62,7 +62,7 @@ config S390
select ARCH_BINFMT_ELF_STATE
select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
select ARCH_ENABLE_MEMORY_HOTREMOVE
- select ARCH_ENABLE_SPLIT_PMD_PTLOCK
+ select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_DEBUG_WX
select ARCH_HAS_DEVMEM_IS_ALLOWED