diff options
Diffstat (limited to 'arch/x86/kernel/kgdb.c')
| -rw-r--r-- | arch/x86/kernel/kgdb.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index 852b81967a3..ec592caac4b 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -387,7 +387,7 @@ kgdb_set_hw_break(unsigned long addr, int len, enum kgdb_bptype bptype) * disable hardware debugging while it is processing gdb packets or * handling exception. */ -void kgdb_disable_hw_debug(struct pt_regs *regs) +static void kgdb_disable_hw_debug(struct pt_regs *regs) { int i; int cpu = raw_smp_processor_id(); @@ -477,8 +477,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, raw_smp_processor_id()); } - kgdb_correct_hw_break(); - return 0; } @@ -621,7 +619,12 @@ int kgdb_arch_init(void) static void kgdb_hw_overflow_handler(struct perf_event *event, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { - kgdb_ll_trap(DIE_DEBUG, "debug", regs, 0, 0, SIGTRAP); + struct task_struct *tsk = current; + int i; + + for (i = 0; i < 4; i++) + if (breakinfo[i].enabled) + tsk->thread.debugreg6 |= (DR_TRAP0 << i); } void kgdb_arch_late(void) @@ -644,7 +647,7 @@ void kgdb_arch_late(void) if (breakinfo[i].pev) continue; breakinfo[i].pev = register_wide_hw_breakpoint(&attr, NULL); - if (IS_ERR(breakinfo[i].pev)) { + if (IS_ERR((void * __force)breakinfo[i].pev)) { printk(KERN_ERR "kgdb: Could not allocate hw" "breakpoints\nDisabling the kernel debugger\n"); breakinfo[i].pev = NULL; @@ -721,6 +724,7 @@ struct kgdb_arch arch_kgdb_ops = { .flags = KGDB_HW_BREAKPOINT, .set_hw_breakpoint = kgdb_set_hw_break, .remove_hw_breakpoint = kgdb_remove_hw_break, + .disable_hw_break = kgdb_disable_hw_debug, .remove_all_hw_break = kgdb_remove_all_hw_break, .correct_hw_break = kgdb_correct_hw_break, }; |