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[PATCH v4 3/8] arm/irq: Keep track of irq affinities
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Wed, 12 Nov 2025 10:51:47 +0000
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- Cc: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Wed, 12 Nov 2025 10:51:55 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHcU8JXa8Kfz7C3KE+RoTRetAsLUA==
- Thread-topic: [PATCH v4 3/8] arm/irq: Keep track of irq affinities
Currently on Arm the desc->affinity mask of an irq is never updated,
which makes it hard to know the actual affinity of an interrupt.
Fix this by updating the field in irq_set_affinity.
Signed-off-by: Mykyta Poturai <mykyta_poturai@xxxxxxxx>
v3->v4:
* patch introduced
---
xen/arch/arm/irq.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
index 73e58a5108..28b40331f7 100644
--- a/xen/arch/arm/irq.c
+++ b/xen/arch/arm/irq.c
@@ -219,7 +219,10 @@ static inline struct domain *irq_get_domain(struct
irq_desc *desc)
void irq_set_affinity(struct irq_desc *desc, const cpumask_t *mask)
{
if ( desc != NULL )
+ {
+ cpumask_copy(desc->affinity, mask);
desc->handler->set_affinity(desc, mask);
+ }
}
int request_irq(unsigned int irq, unsigned int irqflags,
--
2.51.2
|
