diff options
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/code-patching.c | 16 | ||||
| -rw-r--r-- | arch/powerpc/lib/feature-fixups.c | 27 |
2 files changed, 25 insertions, 18 deletions
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 89502cbccb1b..506413a2c25e 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -204,22 +204,6 @@ int patch_branch(unsigned int *addr, unsigned long target, int flags) return patch_instruction(addr, create_branch(addr, target, flags)); } -int patch_branch_site(s32 *site, unsigned long target, int flags) -{ - unsigned int *addr; - - addr = (unsigned int *)((unsigned long)site + *site); - return patch_instruction(addr, create_branch(addr, target, flags)); -} - -int patch_instruction_site(s32 *site, unsigned int instr) -{ - unsigned int *addr; - - addr = (unsigned int *)((unsigned long)site + *site); - return patch_instruction(addr, instr); -} - bool is_offset_in_branch_range(long offset) { /* diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index e613b02bb2f0..5169cc805464 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -118,7 +118,7 @@ void do_feature_fixups(unsigned long value, void *fixup_start, void *fixup_end) } #ifdef CONFIG_PPC_BOOK3S_64 -void do_stf_entry_barrier_fixups(enum stf_barrier_type types) +static void do_stf_entry_barrier_fixups(enum stf_barrier_type types) { unsigned int instrs[3], *dest; long *start, *end; @@ -168,7 +168,7 @@ void do_stf_entry_barrier_fixups(enum stf_barrier_type types) : "unknown"); } -void do_stf_exit_barrier_fixups(enum stf_barrier_type types) +static void do_stf_exit_barrier_fixups(enum stf_barrier_type types) { unsigned int instrs[6], *dest; long *start, *end; @@ -347,6 +347,29 @@ void do_barrier_nospec_fixups_range(bool enable, void *fixup_start, void *fixup_ printk(KERN_DEBUG "barrier-nospec: patched %d locations\n", i); } + +static void patch_btb_flush_section(long *curr) +{ + unsigned int *start, *end; + + start = (void *)curr + *curr; + end = (void *)curr + *(curr + 1); + for (; start < end; start++) { + pr_devel("patching dest %lx\n", (unsigned long)start); + patch_instruction(start, PPC_INST_NOP); + } +} + +void do_btb_flush_fixups(void) +{ + long *start, *end; + + start = PTRRELOC(&__start__btb_flush_fixup); + end = PTRRELOC(&__stop__btb_flush_fixup); + + for (; start < end; start += 2) + patch_btb_flush_section(start); +} #endif /* CONFIG_PPC_FSL_BOOK3E */ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end) |