alpha: select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE

Alpha has a clean split between user and kernel address spaces: user
space occupies 0x0000000000000000-0x000003ffffffffff (TASK_SIZE), while
kernel space uses KSEG and vmalloc regions near the top of the 64-bit
address space. These are strictly non-overlapping.

This enables optimizations in BPF and tracing that can skip address
range checks when user and kernel pointers are distinguishable by
address alone.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Matt Turner <mattst88@gmail.com>
Tested-by: Magnus Lindholm <linmag7@gmail.com>
Reviewed-by: Magnus Lindholm <linmag7@gmail.com>
Link: https://lore.kernel.org/r/20260905-arch-kconfig-options-v2-v2-10-83e8245761a2@gmail.com
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>

0 files changed, 0 insertions, 0 deletions