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ARM: add migrate_pages() system call

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The migrate_pages system call has an assigned number on all architectures
except ARM. When it got added initially in commit d80ade7b32 ("ARM:
Fix warning: #warning syscall migrate_pages not implemented"), it was
intentionally left out based on the observation that there are no 32-bit
ARM NUMA systems.

However, there are now arm64 NUMA machines that can in theory run 32-bit
kernels (actually enabling NUMA there would require additional work)
as well as 32-bit user space on 64-bit kernels, so that argument is no
longer very strong.

Assigning the number lets us use the system call on 64-bit kernels as well
as providing a more consistent set of syscalls across architectures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Arnd Bergmann
2018-12-30 21:43:07 +01:00
parent 12b57c5c70
commit 78594b9599
4 changed files with 4 additions and 2 deletions
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arch/arm/tools/syscall.tbl
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@@ -414,3 +414,4 @@
397 common statx sys_statx
398 common rseq sys_rseq
399 common io_pgetevents sys_io_pgetevents
400 common migrate_pages sys_migrate_pages