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author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-22 10:22:45 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-22 10:22:45 -0700 |
commit | 1e3cd03c54b76b4cbc8b31256dc3f18c417a6876 (patch) | |
tree | 6c7f793b4bbc2f063e289230e1527cd45245b908 /arch/loongarch/kernel/traps.c | |
parent | 4f55aa85a8746e5e255c46c98c031e143605e2a0 (diff) | |
parent | fea1c949f6ca5059e12de00d0483645debc5b206 (diff) | |
download | linux-1e3cd03c54b76b4cbc8b31256dc3f18c417a6876.tar.gz |
Merge tag 'loongarch-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Add objtool support for LoongArch
- Add ORC stack unwinder support for LoongArch
- Add kernel livepatching support for LoongArch
- Select ARCH_HAS_CURRENT_STACK_POINTER in Kconfig
- Select HAVE_ARCH_USERFAULTFD_MINOR in Kconfig
- Some bug fixes and other small changes
* tag 'loongarch-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch/crypto: Clean up useless assignment operations
LoongArch: Define the __io_aw() hook as mmiowb()
LoongArch: Remove superfluous flush_dcache_page() definition
LoongArch: Move {dmw,tlb}_virt_to_page() definition to page.h
LoongArch: Change __my_cpu_offset definition to avoid mis-optimization
LoongArch: Select HAVE_ARCH_USERFAULTFD_MINOR in Kconfig
LoongArch: Select ARCH_HAS_CURRENT_STACK_POINTER in Kconfig
LoongArch: Add kernel livepatching support
LoongArch: Add ORC stack unwinder support
objtool: Check local label in read_unwind_hints()
objtool: Check local label in add_dead_ends()
objtool/LoongArch: Enable orc to be built
objtool/x86: Separate arch-specific and generic parts
objtool/LoongArch: Implement instruction decoder
objtool/LoongArch: Enable objtool to be built
Diffstat (limited to 'arch/loongarch/kernel/traps.c')
-rw-r--r-- | arch/loongarch/kernel/traps.c | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/arch/loongarch/kernel/traps.c b/arch/loongarch/kernel/traps.c index aebfc3733a7607..f9f4eb00c92ef5 100644 --- a/arch/loongarch/kernel/traps.c +++ b/arch/loongarch/kernel/traps.c @@ -53,6 +53,32 @@ #include "access-helper.h" +void *exception_table[EXCCODE_INT_START] = { + [0 ... EXCCODE_INT_START - 1] = handle_reserved, + + [EXCCODE_TLBI] = handle_tlb_load, + [EXCCODE_TLBL] = handle_tlb_load, + [EXCCODE_TLBS] = handle_tlb_store, + [EXCCODE_TLBM] = handle_tlb_modify, + [EXCCODE_TLBNR] = handle_tlb_protect, + [EXCCODE_TLBNX] = handle_tlb_protect, + [EXCCODE_TLBPE] = handle_tlb_protect, + [EXCCODE_ADE] = handle_ade, + [EXCCODE_ALE] = handle_ale, + [EXCCODE_BCE] = handle_bce, + [EXCCODE_SYS] = handle_sys, + [EXCCODE_BP] = handle_bp, + [EXCCODE_INE] = handle_ri, + [EXCCODE_IPE] = handle_ri, + [EXCCODE_FPDIS] = handle_fpu, + [EXCCODE_LSXDIS] = handle_lsx, + [EXCCODE_LASXDIS] = handle_lasx, + [EXCCODE_FPE] = handle_fpe, + [EXCCODE_WATCH] = handle_watch, + [EXCCODE_BTDIS] = handle_lbt, +}; +EXPORT_SYMBOL_GPL(exception_table); + static void show_backtrace(struct task_struct *task, const struct pt_regs *regs, const char *loglvl, bool user) { @@ -1150,19 +1176,9 @@ void __init trap_init(void) for (i = EXCCODE_INT_START; i <= EXCCODE_INT_END; i++) set_handler(i * VECSIZE, handle_vint, VECSIZE); - set_handler(EXCCODE_ADE * VECSIZE, handle_ade, VECSIZE); - set_handler(EXCCODE_ALE * VECSIZE, handle_ale, VECSIZE); - set_handler(EXCCODE_BCE * VECSIZE, handle_bce, VECSIZE); - set_handler(EXCCODE_SYS * VECSIZE, handle_sys, VECSIZE); - set_handler(EXCCODE_BP * VECSIZE, handle_bp, VECSIZE); - set_handler(EXCCODE_INE * VECSIZE, handle_ri, VECSIZE); - set_handler(EXCCODE_IPE * VECSIZE, handle_ri, VECSIZE); - set_handler(EXCCODE_FPDIS * VECSIZE, handle_fpu, VECSIZE); - set_handler(EXCCODE_LSXDIS * VECSIZE, handle_lsx, VECSIZE); - set_handler(EXCCODE_LASXDIS * VECSIZE, handle_lasx, VECSIZE); - set_handler(EXCCODE_FPE * VECSIZE, handle_fpe, VECSIZE); - set_handler(EXCCODE_BTDIS * VECSIZE, handle_lbt, VECSIZE); - set_handler(EXCCODE_WATCH * VECSIZE, handle_watch, VECSIZE); + /* Set exception vector handler */ + for (i = EXCCODE_ADE; i <= EXCCODE_BTDIS; i++) + set_handler(i * VECSIZE, exception_table[i], VECSIZE); cache_error_setup(); |