diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/alternative.c | 38 | ||||
| -rw-r--r-- | arch/i386/kernel/vmlinux.lds.S | 11 |
2 files changed, 2 insertions, 47 deletions
diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c index a27c8d347364..f09635408049 100644 --- a/arch/i386/kernel/alternative.c +++ b/arch/i386/kernel/alternative.c @@ -132,11 +132,8 @@ static void nop_out(void *insns, unsigned int len) } extern struct alt_instr __alt_instructions[], __alt_instructions_end[]; -extern struct alt_instr __smp_alt_instructions[], __smp_alt_instructions_end[]; extern u8 *__smp_locks[], *__smp_locks_end[]; -extern u8 __smp_alt_begin[], __smp_alt_end[]; - /* Replace instructions with better alternatives for this CPU type. This runs before SMP is initialized to avoid SMP problems with self modifying code. This implies that assymetric systems where @@ -171,29 +168,6 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end) #ifdef CONFIG_SMP -static void alternatives_smp_save(struct alt_instr *start, struct alt_instr *end) -{ - struct alt_instr *a; - - DPRINTK("%s: alt table %p-%p\n", __FUNCTION__, start, end); - for (a = start; a < end; a++) { - memcpy(a->replacement + a->replacementlen, - a->instr, - a->instrlen); - } -} - -static void alternatives_smp_apply(struct alt_instr *start, struct alt_instr *end) -{ - struct alt_instr *a; - - for (a = start; a < end; a++) { - memcpy(a->instr, - a->replacement + a->replacementlen, - a->instrlen); - } -} - static void alternatives_smp_lock(u8 **start, u8 **end, u8 *text, u8 *text_end) { u8 **ptr; @@ -319,8 +293,6 @@ void alternatives_smp_switch(int smp) printk(KERN_INFO "SMP alternatives: switching to SMP code\n"); clear_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability); clear_bit(X86_FEATURE_UP, cpu_data[0].x86_capability); - alternatives_smp_apply(__smp_alt_instructions, - __smp_alt_instructions_end); list_for_each_entry(mod, &smp_alt_modules, next) alternatives_smp_lock(mod->locks, mod->locks_end, mod->text, mod->text_end); @@ -328,8 +300,6 @@ void alternatives_smp_switch(int smp) printk(KERN_INFO "SMP alternatives: switching to UP code\n"); set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability); set_bit(X86_FEATURE_UP, cpu_data[0].x86_capability); - apply_alternatives(__smp_alt_instructions, - __smp_alt_instructions_end); list_for_each_entry(mod, &smp_alt_modules, next) alternatives_smp_unlock(mod->locks, mod->locks_end, mod->text, mod->text_end); @@ -396,17 +366,13 @@ void __init alternative_instructions(void) printk(KERN_INFO "SMP alternatives: switching to UP code\n"); set_bit(X86_FEATURE_UP, boot_cpu_data.x86_capability); set_bit(X86_FEATURE_UP, cpu_data[0].x86_capability); - apply_alternatives(__smp_alt_instructions, - __smp_alt_instructions_end); alternatives_smp_unlock(__smp_locks, __smp_locks_end, _text, _etext); } free_init_pages("SMP alternatives", - __pa_symbol(&__smp_alt_begin), - __pa_symbol(&__smp_alt_end)); + __pa_symbol(&__smp_locks), + __pa_symbol(&__smp_locks_end)); } else { - alternatives_smp_save(__smp_alt_instructions, - __smp_alt_instructions_end); alternatives_smp_module_add(NULL, "core kernel", __smp_locks, __smp_locks_end, _text, _etext); diff --git a/arch/i386/kernel/vmlinux.lds.S b/arch/i386/kernel/vmlinux.lds.S index 97fe6eac47c9..2ce4aa185fc8 100644 --- a/arch/i386/kernel/vmlinux.lds.S +++ b/arch/i386/kernel/vmlinux.lds.S @@ -117,22 +117,11 @@ SECTIONS /* might get freed after init */ . = ALIGN(4096); - .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) { - __smp_alt_begin = .; - __smp_alt_instructions = .; - *(.smp_altinstructions) - __smp_alt_instructions_end = .; - } - . = ALIGN(4); .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { __smp_locks = .; *(.smp_locks) __smp_locks_end = .; } - .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) { - *(.smp_altinstr_replacement) - __smp_alt_end = .; - } /* will be freed after init * Following ALIGN() is required to make sure no other data falls on the * same page where __smp_alt_end is pointing as that page might be freed |