arm64: fault: avoid send SIGBUS two times
do_sea() calls arm64_notify_die() which will always signal user-space. It also returns whether APEI claimed the external abort as a RAS notification. If it returns failure do_mem_abort() will signal user-space too. do_mem_abort() wants to know if we handled the error, we always call arm64_notify_die() so can always return success. Signed-off-by: NDongjiu Geng <gengdongjiu@huawei.com> Reviewed-by: NJames Morse <james.morse@arm.com> Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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