desc->irq_data points to the top level IRQ data descriptor which is
not necessarily in the XICS IRQ domain. MSIs are in another domain for
instance. Fix that by looking for a mapping on the low level XICS IRQ
domain.
TODO: Why not use irq_migrate_all_off_this_cpu() instead ?
Cc: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
arch/powerpc/sysdev/xics/xics-common.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/sysdev/xics/xics-common.c
b/arch/powerpc/sysdev/xics/xics-common.c
index 05d21005dc79..2a3ad7f5c331 100644
--- a/arch/powerpc/sysdev/xics/xics-common.c
+++ b/arch/powerpc/sysdev/xics/xics-common.c
@@ -183,6 +183,8 @@ void xics_migrate_irqs_away(void)
unsigned int irq, virq;
struct irq_desc *desc;
+ pr_debug("%s: CPU %u\n", __func__, cpu);
+
/* If we used to be the default server, move to the new "boot_cpuid" */
if (hw_cpu == xics_default_server)
xics_update_irq_servers();
@@ -197,6 +199,7 @@ void xics_migrate_irqs_away(void)
struct irq_chip *chip;
long server;
unsigned long flags;
+ struct irq_data *irqd;
/* We can't set affinity on ISA interrupts */
if (virq < NUM_ISA_INTERRUPTS)
@@ -204,9 +207,11 @@ void xics_migrate_irqs_away(void)
/* We only need to migrate enabled IRQS */
if (!desc->action)
continue;
- if (desc->irq_data.domain != xics_host)
+ /* We need a mapping in the XICS IRQ domain */
+ irqd = irq_domain_get_irq_data(xics_host, virq);
+ if (!irqd)
continue;
- irq = desc->irq_data.hwirq;
+ irq = irqd_to_hwirq(irqd);
/* We need to get IPIs still. */
if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
continue;
--
2.26.3
