| Date | Fri, 25 Jan 2019 15:16:42 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH v2 06/29] ARM: add migrate_pages() system call |
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On Fri, Jan 18, 2019 at 05:18:12PM +0100, Arnd Bergmann wrote: > The migrate_pages system call has an assigned number on all architectures > except ARM. When it got added initially in commit d80ade7b3231 ("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>
For the arm64 part:
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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