@@ -290,6 +290,19 @@ static struct irq_cfg *realloc_irq_and_cfg_at(unsigned int at, int node)
/* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */
static struct irq_cfg irq_cfgx[NR_IRQS_LEGACY];
+static void alloc_ioapic_saved_registers(int idx)
+{
+ if (ioapics[idx].saved_registers)
+ return;
+
+ ioapics[idx].saved_registers =
+ kzalloc(sizeof(struct IO_APIC_route_entry) *
+ ioapics[idx].nr_registers, GFP_KERNEL);
+
+ if (!ioapics[idx].saved_registers)
+ pr_err("IOAPIC %d: suspend/resume impossible!\n", idx);
+}
+
int __init arch_early_irq_init(void)
{
struct irq_cfg *cfg;
@@ -298,13 +311,8 @@ int __init arch_early_irq_init(void)
if (!legacy_pic->nr_legacy_irqs)
io_apic_irqs = ~0UL;
- for (i = 0; i < nr_ioapics; i++) {
- ioapics[i].saved_registers =
- kzalloc(sizeof(struct IO_APIC_route_entry) *
- ioapics[i].nr_registers, GFP_KERNEL);
- if (!ioapics[i].saved_registers)
- pr_err("IOAPIC %d: suspend/resume impossible!\n", i);
- }
+ for (i = 0; i < nr_ioapics; i++)
+ alloc_ioapic_saved_registers(i);
cfg = irq_cfgx;
count = ARRAY_SIZE(irq_cfgx);
Split alloc_ioapic_save_registers() from early_irq_init(), so it will be per ioapic. Will call that later for hot-added ioapic controller. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Joerg Roedel <joro@8bytes.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> --- arch/x86/kernel/apic/io_apic.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-)