Max Filippov a8f0c31fa8 xtensa: noMMU: allow handling protection faults ... Many xtensa CPU cores without full MMU still have memory protection features capable of raising exceptions for invalid instruction fetches/data access. Allow handling such exceptions. This improves behavior of processes that pass invalid memory pointers to syscalls in noMMU configs: in case of exception the kernel instead of killing the process is now able to return -EINVAL from a syscall. Introduce CONFIG_PFAULT that controls whether protection fault code is enabled and register handlers for common memory protection exceptions when it is enabled. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>		2022-05-01 19:51:21 -07:00
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cache.c	xtensa: simplify coherent_kvaddr logic	2021-04-04 15:39:03 -07:00
fault.c	xtensa: noMMU: allow handling protection faults	2022-05-01 19:51:21 -07:00
highmem.c	xtensa/mm/highmem: Make generic kmap_atomic() work correctly	2020-11-16 21:19:24 +01:00
init.c	mm: move mem_init_print_info() into mm_init()	2021-04-30 11:20:42 -07:00
ioremap.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
kasan_init.c	mm: pgtable: add shortcuts for accessing kernel PMD and PTE	2020-06-09 09:39:13 -07:00
Makefile	xtensa: noMMU: allow handling protection faults	2022-05-01 19:51:21 -07:00
misc.S	xtensa: simplify coherent_kvaddr logic	2021-04-04 15:39:03 -07:00
mmu.c	xtensa: move asid_cache from fault.c to mmu.c	2022-05-01 19:51:20 -07:00
tlb.c	xtensa: define update_mmu_tlb function	2022-03-22 09:45:09 -07:00