static void broadcast_tlb_mm_a15_erratum(struct mm_struct *mm)
{
int cpu;
cpumask_t mask = { CPU_BITS_NONE };
if (!erratum_a15_798181())
return;
preempt_disable();
dummy_flush_tlb_a15_erratum();
for_each_online_cpu(cpu) {
if (cpu == smp_processor_id())
continue;
/*
* We only need to send an IPI if the other CPUs are running
* the same mm (and ASID) as the one being invalidated. There
* is no need for locking around the current_mm check since
* the switch_mm() function has a dmb() for this erratum in
* case a context switch happens on another CPU after the
* condition below.
*/
if (mm == per_cpu(current_mm, cpu))
cpumask_set_cpu(cpu, &mask);
}
smp_call_function_many(&mask, ipi_flush_tlb_a15_erratum, NULL, 1);
preempt_enable_no_resched();
}
static void broadcast_tlb_a15_erratum(void)
{
if (!has_erratum_a15_798181)
return;
dummy_flush_tlb_a15_erratum();
smp_call_function(ipi_flush_tlb_a15_erratum, NULL, 1);
}
static void broadcast_tlb_a15_erratum(void)
{
if (!erratum_a15_798181())
return;
preempt_disable();
dummy_flush_tlb_a15_erratum();
smp_call_function_many(cpu_online_mask, ipi_flush_tlb_a15_erratum,
NULL, 1);
preempt_enable_no_resched();
}
static void broadcast_tlb_mm_a15_erratum(struct mm_struct *mm)
{
int this_cpu;
cpumask_t mask = { CPU_BITS_NONE };
if (!has_erratum_a15_798181)
return;
dummy_flush_tlb_a15_erratum();
this_cpu = get_cpu();
a15_erratum_get_cpumask(this_cpu, mm, &mask);
smp_call_function_many(&mask, ipi_flush_tlb_a15_erratum, NULL, 1);
put_cpu();
}