ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
It turns out that the logical CPU mapping is useful even when !CONFIG_SMP
for manipulation of devices like interrupt and power controllers when
running a UP kernel on a CPU other than 0. This can happen when kexecing
a UP image from an SMP kernel.
In the future, multi-cluster systems running AMP configurations will
require something similar for mapping cluster IDs, so it makes sense to
decouple this logic in preparation for this support.
Acked-by: Yang Bai <[email protected]>
Acked-by: Marc Zyngier <[email protected]>
Reported-by: Joerg Roedel <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Russell King <[email protected]>
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index b2dc2dd..c47d619 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -41,6 +41,7 @@
#include <asm/irq.h>
#include <asm/exception.h>
+#include <asm/smp_plat.h>
#include <asm/mach/irq.h>
#include <asm/hardware/gic.h>
@@ -352,11 +353,7 @@
unsigned int gic_irqs = gic->gic_irqs;
struct irq_domain *domain = &gic->domain;
void __iomem *base = gic_data_dist_base(gic);
- u32 cpu = 0;
-
-#ifdef CONFIG_SMP
- cpu = cpu_logical_map(smp_processor_id());
-#endif
+ u32 cpu = cpu_logical_map(smp_processor_id());
cpumask = 1 << cpu;
cpumask |= cpumask << 8;
