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Diffstat (limited to 'arch/x86/kernel/traps_32.c')
-rw-r--r--arch/x86/kernel/traps_32.c54
1 files changed, 21 insertions, 33 deletions
diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c
index 1e9d57256eb..cc9acace7e2 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) (&regs->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, &regs->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.
*/