| Message ID | 20240216184153.2714504-8-oliver.upton@linux.dev (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: arm64: Avoid serializing LPI get() / put() | expand |
diff --git a/arch/arm64/kvm/vgic/vgic.c b/arch/arm64/kvm/vgic/vgic.c index 5988d162b765..be3ed4c5e1fa 100644 --- a/arch/arm64/kvm/vgic/vgic.c +++ b/arch/arm64/kvm/vgic/vgic.c @@ -124,7 +124,7 @@ void __vgic_put_lpi_locked(struct kvm *kvm, struct vgic_irq *irq) xa_erase(&dist->lpi_xa, irq->intid); atomic_dec(&dist->lpi_count); - kfree(irq); + kfree_rcu(irq, rcu); } void vgic_put_irq(struct kvm *kvm, struct vgic_irq *irq) diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 71e9d719533b..47035946648e 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -117,6 +117,7 @@ struct irq_ops { struct vgic_irq { raw_spinlock_t irq_lock; /* Protects the content of the struct */ + struct rcu_head rcu; struct list_head ap_list; struct kvm_vcpu *vcpu; /* SGIs and PPIs: The VCPU
Free the vgic_irq structs in an RCU-safe manner to allow reads of the LPI configuration data to happen in parallel with the release of LPIs. Signed-off-by: Oliver Upton <oliver.upton@linux.dev> --- arch/arm64/kvm/vgic/vgic.c | 2 +- include/kvm/arm_vgic.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)