diff options
Diffstat (limited to 'arch/powerpc/include/asm/sections.h')
| -rw-r--r-- | arch/powerpc/include/asm/sections.h | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h index baf318aec53..a5e930aca80 100644 --- a/arch/powerpc/include/asm/sections.h +++ b/arch/powerpc/include/asm/sections.h @@ -2,11 +2,17 @@ #define _ASM_POWERPC_SECTIONS_H #ifdef __KERNEL__ +#include <linux/elf.h> +#include <linux/uaccess.h> #include <asm-generic/sections.h> #ifdef __powerpc64__ -extern char _end[]; +extern char __start_interrupts[]; +extern char __end_interrupts[]; + +extern char __prom_init_toc_start[]; +extern char __prom_init_toc_end[]; static inline int in_kernel_text(unsigned long addr) { @@ -16,14 +22,46 @@ static inline int in_kernel_text(unsigned long addr) return 0; } +static inline int overlaps_interrupt_vector_text(unsigned long start, + unsigned long end) +{ + unsigned long real_start, real_end; + real_start = __start_interrupts - _stext; + real_end = __end_interrupts - _stext; + + return start < (unsigned long)__va(real_end) && + (unsigned long)__va(real_start) < end; +} + static inline int overlaps_kernel_text(unsigned long start, unsigned long end) { return start < (unsigned long)__init_end && (unsigned long)_stext < end; } +static inline int overlaps_kvm_tmp(unsigned long start, unsigned long end) +{ +#ifdef CONFIG_KVM_GUEST + extern char kvm_tmp[]; + return start < (unsigned long)kvm_tmp && + (unsigned long)&kvm_tmp[1024 * 1024] < end; +#else + return 0; +#endif +} + +#if !defined(_CALL_ELF) || _CALL_ELF != 2 #undef dereference_function_descriptor -void *dereference_function_descriptor(void *); +static inline void *dereference_function_descriptor(void *ptr) +{ + struct ppc64_opd_entry *desc = ptr; + void *p; + + if (!probe_kernel_address(&desc->funcaddr, p)) + ptr = p; + return ptr; +} +#endif #endif |