diff options
Diffstat (limited to 'drivers/irqchip/irq-gic-v3-its.c')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index fca888b36680..40ebf1726393 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -786,6 +786,7 @@ static struct its_vpe *its_build_vmapp_cmd(struct its_node *its, struct its_cmd_block *cmd, struct its_cmd_desc *desc) { + struct its_vpe *vpe = valid_vpe(its, desc->its_vmapp_cmd.vpe); unsigned long vpt_addr, vconf_addr; u64 target; bool alloc; @@ -798,6 +799,11 @@ static struct its_vpe *its_build_vmapp_cmd(struct its_node *its, if (is_v4_1(its)) { alloc = !atomic_dec_return(&desc->its_vmapp_cmd.vpe->vmapp_count); its_encode_alloc(cmd, alloc); + /* + * Unmapping a VPE is self-synchronizing on GICv4.1, + * no need to issue a VSYNC. + */ + vpe = NULL; } goto out; @@ -832,7 +838,7 @@ static struct its_vpe *its_build_vmapp_cmd(struct its_node *its, out: its_fixup_cmd(cmd); - return valid_vpe(its, desc->its_vmapp_cmd.vpe); + return vpe; } static struct its_vpe *its_build_vmapti_cmd(struct its_node *its, @@ -3826,9 +3832,9 @@ static int its_vpe_set_affinity(struct irq_data *d, bool force) { struct its_vpe *vpe = irq_data_get_irq_chip_data(d); - struct cpumask common, *table_mask; + unsigned int from, cpu = nr_cpu_ids; + struct cpumask *table_mask; unsigned long flags; - int from, cpu; /* * Changing affinity is mega expensive, so let's be as lazy as @@ -3850,10 +3856,15 @@ static int its_vpe_set_affinity(struct irq_data *d, * If we are offered another CPU in the same GICv4.1 ITS * affinity, pick this one. Otherwise, any CPU will do. */ - if (table_mask && cpumask_and(&common, mask_val, table_mask)) - cpu = cpumask_test_cpu(from, &common) ? from : cpumask_first(&common); - else + if (table_mask) + cpu = cpumask_any_and(mask_val, table_mask); + if (cpu < nr_cpu_ids) { + if (cpumask_test_cpu(from, mask_val) && + cpumask_test_cpu(from, table_mask)) + cpu = from; + } else { cpu = cpumask_first(mask_val); + } if (from == cpu) goto out; @@ -4521,8 +4532,6 @@ static int its_vpe_irq_domain_alloc(struct irq_domain *domain, unsigned int virq struct page *vprop_page; int base, nr_ids, i, err = 0; - BUG_ON(!vm); - bitmap = its_lpi_alloc(roundup_pow_of_two(nr_irqs), &base, &nr_ids); if (!bitmap) return -ENOMEM; @@ -4561,13 +4570,8 @@ static int its_vpe_irq_domain_alloc(struct irq_domain *domain, unsigned int virq irqd_set_resend_when_in_progress(irq_get_irq_data(virq + i)); } - if (err) { - if (i > 0) - its_vpe_irq_domain_free(domain, virq, i); - - its_lpi_free(bitmap, base, nr_ids); - its_free_prop_table(vprop_page); - } + if (err) + its_vpe_irq_domain_free(domain, virq, i); return err; } |