processor debug state PSTATE.D is unmasked in smp call
clear_os_lock for secondary cpus. So debug state is still
masked in normal kernel context. With this patch, unmask
debug state on secondary boot for the cpus in normal kernel
context. Now kgdb tests passed with multicore.
Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit
d8ed442a009ecfe155b57d58f231db3d6084633d)
Signed-off-by: Mark Brown <broonie@linaro.org>
Conflicts:
arch/arm64/kernel/smp.c
static void clear_os_lock(void *unused)
{
asm volatile("msr oslar_el1, %0" : : "r" (0));
- isb();
- local_dbg_enable();
}
static int __cpuinit os_lock_notify(struct notifier_block *self,
static int __cpuinit debug_monitors_init(void)
{
/* Clear the OS lock. */
- smp_call_function(clear_os_lock, NULL, 1);
- clear_os_lock(NULL);
+ on_each_cpu(clear_os_lock, NULL, 1);
+ isb();
+ local_dbg_enable();
/* Register hotplug handler. */
register_cpu_notifier(&os_lock_nb);
*/
notify_cpu_starting(cpu);
+ local_dbg_enable();
local_irq_enable();
local_fiq_enable();