KVM: arm/arm64: vgic-v2: Reset LRs at boot time
In order to let make the GICv2 code more lazy in the way it accesses the LRs, it is necessary to start with a clean slate. Let's reset the LRs on each CPU when the vgic is probed. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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@ -176,6 +176,15 @@ static const struct vgic_ops vgic_v2_ops = {
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static struct vgic_params vgic_v2_params;
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static void vgic_cpu_init_lrs(void *params)
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{
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struct vgic_params *vgic = params;
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int i;
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for (i = 0; i < vgic->nr_lr; i++)
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writel_relaxed(0, vgic->vctrl_base + GICH_LR0 + (i * 4));
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}
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/**
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* vgic_v2_probe - probe for a GICv2 compatible interrupt controller in DT
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* @node: pointer to the DT node
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@ -257,6 +266,9 @@ int vgic_v2_probe(struct device_node *vgic_node,
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vgic->type = VGIC_V2;
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vgic->max_gic_vcpus = VGIC_V2_MAX_CPUS;
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on_each_cpu(vgic_cpu_init_lrs, vgic, 1);
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*ops = &vgic_v2_ops;
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*params = vgic;
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goto out;
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