diff options
Diffstat (limited to 'arch/x86/kernel/traps_32.c')
| -rw-r--r-- | arch/x86/kernel/traps_32.c | 54 |
1 files changed, 21 insertions, 33 deletions
diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c index 1e9d57256eb1..cc9acace7e23 100644 --- a/arch/x86/kernel/traps_32.c +++ b/arch/x86/kernel/traps_32.c @@ -63,6 +63,9 @@ int panic_on_unrecovered_nmi; +DECLARE_BITMAP(used_vectors, NR_VECTORS); +EXPORT_SYMBOL_GPL(used_vectors); + asmlinkage int system_call(void); /* Do we ignore FPU interrupts ? */ @@ -288,33 +291,9 @@ EXPORT_SYMBOL(dump_stack); void show_registers(struct pt_regs *regs) { int i; - int in_kernel = 1; - unsigned long esp; - unsigned short ss, gs; - - esp = (unsigned long) (®s->esp); - savesegment(ss, ss); - savesegment(gs, gs); - if (user_mode_vm(regs)) { - in_kernel = 0; - esp = regs->esp; - ss = regs->xss & 0xffff; - } + print_modules(); - printk(KERN_EMERG "CPU: %d\n" - KERN_EMERG "EIP: %04x:[<%08lx>] %s VLI\n" - KERN_EMERG "EFLAGS: %08lx (%s %.*s)\n", - smp_processor_id(), 0xffff & regs->xcs, regs->eip, - print_tainted(), regs->eflags, init_utsname()->release, - (int)strcspn(init_utsname()->version, " "), - init_utsname()->version); - print_symbol(KERN_EMERG "EIP is at %s\n", regs->eip); - printk(KERN_EMERG "eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n", - regs->eax, regs->ebx, regs->ecx, regs->edx); - printk(KERN_EMERG "esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n", - regs->esi, regs->edi, regs->ebp, esp); - printk(KERN_EMERG "ds: %04x es: %04x fs: %04x gs: %04x ss: %04x\n", - regs->xds & 0xffff, regs->xes & 0xffff, regs->xfs & 0xffff, gs, ss); + __show_registers(regs, 0); printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)", TASK_COMM_LEN, current->comm, task_pid_nr(current), current_thread_info(), current, task_thread_info(current)); @@ -322,14 +301,14 @@ void show_registers(struct pt_regs *regs) * When in-kernel, we also print out the stack and code at the * time of the fault.. */ - if (in_kernel) { + if (!user_mode_vm(regs)) { u8 *eip; unsigned int code_prologue = code_bytes * 43 / 64; unsigned int code_len = code_bytes; unsigned char c; printk("\n" KERN_EMERG "Stack: "); - show_stack_log_lvl(NULL, regs, (unsigned long *)esp, KERN_EMERG); + show_stack_log_lvl(NULL, regs, ®s->esp, KERN_EMERG); printk(KERN_EMERG "Code: "); @@ -374,11 +353,11 @@ int is_valid_bugaddr(unsigned long eip) void die(const char * str, struct pt_regs * regs, long err) { static struct { - spinlock_t lock; + raw_spinlock_t lock; u32 lock_owner; int lock_owner_depth; } die = { - .lock = __SPIN_LOCK_UNLOCKED(die.lock), + .lock = __RAW_SPIN_LOCK_UNLOCKED, .lock_owner = -1, .lock_owner_depth = 0 }; @@ -389,13 +368,14 @@ void die(const char * str, struct pt_regs * regs, long err) if (die.lock_owner != raw_smp_processor_id()) { console_verbose(); - spin_lock_irqsave(&die.lock, flags); + __raw_spin_lock(&die.lock); + raw_local_save_flags(flags); die.lock_owner = smp_processor_id(); die.lock_owner_depth = 0; bust_spinlocks(1); } else - local_save_flags(flags); + raw_local_save_flags(flags); if (++die.lock_owner_depth < 3) { unsigned long esp; @@ -439,7 +419,8 @@ void die(const char * str, struct pt_regs * regs, long err) bust_spinlocks(0); die.lock_owner = -1; add_taint(TAINT_DIE); - spin_unlock_irqrestore(&die.lock, flags); + __raw_spin_unlock(&die.lock); + raw_local_irq_restore(flags); if (!regs) return; @@ -1142,6 +1123,8 @@ static void __init set_task_gate(unsigned int n, unsigned int gdt_entry) void __init trap_init(void) { + int i; + #ifdef CONFIG_EISA void __iomem *p = ioremap(0x0FFFD9, 4); if (readl(p) == 'E'+('I'<<8)+('S'<<16)+('A'<<24)) { @@ -1201,6 +1184,11 @@ void __init trap_init(void) set_system_gate(SYSCALL_VECTOR,&system_call); + /* Reserve all the builtin and the syscall vector. */ + for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++) + set_bit(i, used_vectors); + set_bit(SYSCALL_VECTOR, used_vectors); + /* * Should be a barrier for any external CPU state. */ |