From 81dc9504a7006b484cfcf074796094ee526b0c45 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 30 Mar 2023 18:47:57 +0100 Subject: KVM: arm64: nv: timers: Support hyp timer emulation Emulating EL2 also means emulating the EL2 timers. To do so, we expand our timer framework to deal with at most 4 timers. At any given time, two timers are using the HW timers, and the two others are purely emulated. The role of deciding which is which at any given time is left to a mapping function which is called every time we need to make such a decision. Reviewed-by: Colton Lewis Co-developed-by: Christoffer Dall Signed-off-by: Christoffer Dall Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20230330174800.2677007-18-maz@kernel.org --- arch/arm64/kvm/vgic/vgic.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'arch/arm64/kvm/vgic') diff --git a/arch/arm64/kvm/vgic/vgic.c b/arch/arm64/kvm/vgic/vgic.c index d97e6080b421..ae491ef97188 100644 --- a/arch/arm64/kvm/vgic/vgic.c +++ b/arch/arm64/kvm/vgic/vgic.c @@ -573,6 +573,21 @@ int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, unsigned int vintid) return 0; } +int kvm_vgic_get_map(struct kvm_vcpu *vcpu, unsigned int vintid) +{ + struct vgic_irq *irq = vgic_get_irq(vcpu->kvm, vcpu, vintid); + unsigned long flags; + int ret = -1; + + raw_spin_lock_irqsave(&irq->irq_lock, flags); + if (irq->hw) + ret = irq->hwintid; + raw_spin_unlock_irqrestore(&irq->irq_lock, flags); + + vgic_put_irq(vcpu->kvm, irq); + return ret; +} + /** * kvm_vgic_set_owner - Set the owner of an interrupt for a VM * -- cgit v1.2.3