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 <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> --- virt/kvm/arm/vgic-v2.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/virt/kvm/arm/vgic-v2.c b/virt/kvm/arm/vgic-v2.c index ff02f08..67ec334 100644 --- a/virt/kvm/arm/vgic-v2.c +++ b/virt/kvm/arm/vgic-v2.c @@ -176,6 +176,15 @@ static const struct vgic_ops vgic_v2_ops = { static struct vgic_params vgic_v2_params; +static void vgic_cpu_init_lrs(void *params) +{ + struct vgic_params *vgic = params; + int i; + + for (i = 0; i < vgic->nr_lr; i++) + writel_relaxed(0, vgic->vctrl_base + GICH_LR0 + (i * 4)); +} + /** * vgic_v2_probe - probe for a GICv2 compatible interrupt controller in DT * @node: pointer to the DT node @@ -257,6 +266,9 @@ int vgic_v2_probe(struct device_node *vgic_node, vgic->type = VGIC_V2; vgic->max_gic_vcpus = VGIC_V2_MAX_CPUS; + + on_each_cpu(vgic_cpu_init_lrs, vgic, 1); + *ops = &vgic_v2_ops; *params = vgic; goto out; -- 2.1.4 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
