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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Jan 10, 2019 at 05:24:26PM +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 > --- > arch/arm/include/asm/unistd.h | 1 - > arch/arm/tools/syscall.tbl | 1 + > arch/arm64/include/asm/unistd.h | 2 +- > arch/arm64/include/asm/unistd32.h | 2 ++ > 4 files changed, 4 insertions(+), 2 deletions(-) [...] > diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h > index 04ee190b90fe..355fe2bc035b 100644 > --- a/arch/arm64/include/asm/unistd32.h > +++ b/arch/arm64/include/asm/unistd32.h > @@ -821,6 +821,8 @@ __SYSCALL(__NR_statx, sys_statx) > __SYSCALL(__NR_rseq, sys_rseq) > #define __NR_io_pgetevents 399 > __SYSCALL(__NR_io_pgetevents, compat_sys_io_pgetevents) > +#define __NR_migrate_pages 400 > +__SYSCALL(__NR_migrate_pages, sys_migrate_pages) Should be compat_sys_migrate_pages instead? Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel