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Diffstat (limited to 'arch/arm64/kernel/smp.c')
-rw-r--r--arch/arm64/kernel/smp.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 9f7195a5773e..551eb07c53b6 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -47,6 +47,7 @@
#include <asm/cpu.h>
#include <asm/cputype.h>
#include <asm/cpu_ops.h>
+#include <asm/daifflags.h>
#include <asm/mmu_context.h>
#include <asm/numa.h>
#include <asm/pgtable.h>
@@ -216,6 +217,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
*/
asmlinkage void secondary_start_kernel(void)
{
+ u64 mpidr = read_cpuid_mpidr() & MPIDR_HWID_BITMASK;
struct mm_struct *mm = &init_mm;
unsigned int cpu;
@@ -265,14 +267,14 @@ asmlinkage void secondary_start_kernel(void)
* the CPU migration code to notice that the CPU is online
* before we continue.
*/
- pr_info("CPU%u: Booted secondary processor [%08x]\n",
- cpu, read_cpuid_id());
+ pr_info("CPU%u: Booted secondary processor 0x%010lx [0x%08x]\n",
+ cpu, (unsigned long)mpidr,
+ read_cpuid_id());
update_cpu_boot_status(CPU_BOOT_SUCCESS);
set_cpu_online(cpu, true);
complete(&cpu_running);
- local_irq_enable();
- local_async_enable();
+ local_daif_restore(DAIF_PROCCTX);
/*
* OK, it's off to the idle thread for us
@@ -368,10 +370,6 @@ void __cpu_die(unsigned int cpu)
/*
* Called from the idle thread for the CPU which has been shutdown.
*
- * Note that we disable IRQs here, but do not re-enable them
- * before returning to the caller. This is also the behaviour
- * of the other hotplug-cpu capable cores, so presumably coming
- * out of idle fixes this.
*/
void cpu_die(void)
{
@@ -379,7 +377,7 @@ void cpu_die(void)
idle_task_exit();
- local_irq_disable();
+ local_daif_mask();
/* Tell __cpu_die() that this CPU is now safe to dispose of */
(void)cpu_report_death();
@@ -837,7 +835,7 @@ static void ipi_cpu_stop(unsigned int cpu)
{
set_cpu_online(cpu, false);
- local_irq_disable();
+ local_daif_mask();
while (1)
cpu_relax();