diff options
Diffstat (limited to 'arch/powerpc/include/asm/sections.h')
| -rw-r--r-- | arch/powerpc/include/asm/sections.h | 54 |
1 files changed, 26 insertions, 28 deletions
diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h index 38f79e42bf3c..f43f3a6b0051 100644 --- a/arch/powerpc/include/asm/sections.h +++ b/arch/powerpc/include/asm/sections.h @@ -6,18 +6,34 @@ #include <linux/elf.h> #include <linux/uaccess.h> +#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS +typedef struct func_desc func_desc_t; +#endif + #include <asm-generic/sections.h> extern char __head_end[]; +extern char __srwx_boundary[]; +extern char __exittext_begin[], __exittext_end[]; + +/* Patch sites */ +extern s32 patch__call_flush_branch_caches1; +extern s32 patch__call_flush_branch_caches2; +extern s32 patch__call_flush_branch_caches3; +extern s32 patch__flush_count_cache_return; +extern s32 patch__flush_link_stack_return; +extern s32 patch__call_kvm_flush_link_stack; +extern s32 patch__call_kvm_flush_link_stack_p9; +extern s32 patch__memset_nocache, patch__memcpy_nocache; + +extern long flush_branch_caches; +extern long kvm_flush_link_stack; #ifdef __powerpc64__ extern char __start_interrupts[]; extern char __end_interrupts[]; -extern char __prom_init_toc_start[]; -extern char __prom_init_toc_end[]; - #ifdef CONFIG_PPC_POWERNV extern char start_real_trampolines[]; extern char end_real_trampolines[]; @@ -31,10 +47,15 @@ extern char end_virt_trampolines[]; */ static inline unsigned long kernel_toc_addr(void) { +#ifdef CONFIG_PPC_KERNEL_PCREL + BUILD_BUG(); + return -1UL; +#else unsigned long toc_ptr; asm volatile("mr %0, 2" : "=r" (toc_ptr)); return toc_ptr; +#endif } static inline int overlaps_interrupt_vector_text(unsigned long start, @@ -54,31 +75,8 @@ static inline int overlaps_kernel_text(unsigned long start, unsigned long end) (unsigned long)_stext < end; } -#ifdef PPC64_ELF_ABI_v1 - -#define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1 - -#undef dereference_function_descriptor -static inline void *dereference_function_descriptor(void *ptr) -{ - struct ppc64_opd_entry *desc = ptr; - void *p; - - if (!get_kernel_nofault(p, (void *)&desc->funcaddr)) - ptr = p; - return ptr; -} - -#undef dereference_kernel_function_descriptor -static inline void *dereference_kernel_function_descriptor(void *ptr) -{ - if (ptr < (void *)__start_opd || ptr >= (void *)__end_opd) - return ptr; - - return dereference_function_descriptor(ptr); -} -#endif /* PPC64_ELF_ABI_v1 */ - +#else +static inline unsigned long kernel_toc_addr(void) { BUILD_BUG(); return -1UL; } #endif #endif /* __KERNEL__ */ |