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KVM: arm/arm64: vgic: Make vgic_cpu->ap_list_lock a raw_spinlock

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vgic_cpu->ap_list_lock must always be taken with interrupts disabled as
it is used in interrupt context.

For configurations such as PREEMPT_RT_FULL, this means that it should
be a raw_spinlock since RT spinlocks are interruptible.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
This commit is contained in:
Julien Thierry 2019-01-07 15:06:17 +00:00 • committed by Christoffer Dall
commit e08d8d2960
3 changed files with 21 additions and 20 deletions
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2
include/kvm/arm_vgic.h
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@ -307,7 +307,7 @@ struct vgic_cpu {
unsigned int used_lrs;
struct vgic_irq private_irqs[VGIC_NR_PRIVATE_IRQS];
spinlock_t ap_list_lock; /* Protects the ap_list */
raw_spinlock_t ap_list_lock; /* Protects the ap_list */
/*
* List of IRQs that this VCPU should consider because they are either