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pkey_sighandler_tests.c makes raw syscalls using its own helper, syscall_raw(). One of those syscalls is clone, which is problematic as every architecture has a different opinion on the order of its arguments. To complete arm64 support, we therefore add an appropriate implementation in syscall_raw(), and introduce a clone_raw() helper that shuffles arguments as needed for each arch. Having done this, we enable building pkey_sighandler_tests for arm64 in the Makefile. Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com> Link: https://lore.kernel.org/r/20241029144539.111155-6-kevin.brodsky@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>