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sparc64 uses address space identifiers to differentiate between kernel and user space, using ASI_P for kernel threads but ASI_AIUS for normal user space, with the option of changing between them. As nothing really changes the ASI any more, just hardcode ASI_AIUS everywhere. Kernel threads are not allowed to access __user pointers anyway. Signed-off-by: Arnd Bergmann <arnd@arndb.de>