Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Based on arch/arm/mm/extable.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/extable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) int fixup_exception(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	const struct exception_table_entry *fixup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	fixup = search_exception_tables(instruction_pointer(regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	if (!fixup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	if (in_bpf_jit(regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		return arm64_bpf_fixup_exception(fixup, regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	regs->pc = (unsigned long)&fixup->fixup + fixup->fixup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) }