Merge "ARM64: smp: Save CPU registers before IPI_CPU_STOP processing"

#include <asm/tlbflush.h>

#include <asm/ptrace.h>

#include <asm/virt.h>

#include <asm/system_misc.h>

#define CREATE_TRACE_POINTS

#include <trace/events/ipi.h>

#endif

static DEFINE_RAW_SPINLOCK(stop_lock);

DEFINE_PER_CPU(struct pt_regs, regs_before_stop);

/*

 * ipi_cpu_stop - handle IPI from smp_send_stop()

 */

static void ipi_cpu_stop(unsigned int cpu)

static void ipi_cpu_stop(unsigned int cpu, struct pt_regs *regs)

{

	if (system_state == SYSTEM_BOOTING ||

	    system_state == SYSTEM_RUNNING) {

		per_cpu(regs_before_stop, cpu) = *regs;

		raw_spin_lock(&stop_lock);

		pr_crit("CPU%u: stopping\n", cpu);

		__show_regs(regs);

		dump_stack();

		raw_spin_unlock(&stop_lock);

	}

	case IPI_CPU_STOP:

		irq_enter();

		ipi_cpu_stop(cpu);

		ipi_cpu_stop(cpu, regs);

		irq_exit();

		break;