These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / virt / kvm / arm / vgic-v3.c

diff --git a/kernel/virt/kvm/arm/vgic-v3.c b/kernel/virt/kvm/arm/vgic-v3.c
index dff0602..487d635 100644 (file)
--- a/kernel/virt/kvm/arm/vgic-v3.c
+++ b/kernel/virt/kvm/arm/vgic-v3.c
@@ -67,6 +67,10 @@ static struct vgic_lr vgic_v3_get_lr(const struct kvm_vcpu *vcpu, int lr)
                lr_desc.state |= LR_STATE_ACTIVE;
        if (val & ICH_LR_EOI)
                lr_desc.state |= LR_EOI_INT;
+       if (val & ICH_LR_HW) {
+               lr_desc.state |= LR_HW;
+               lr_desc.hwirq = (val >> ICH_LR_PHYS_ID_SHIFT) & GENMASK(9, 0);
+       }
 
        return lr_desc;
 }
@@ -84,10 +88,17 @@ static void vgic_v3_set_lr(struct kvm_vcpu *vcpu, int lr,
         * Eventually we want to make this configurable, so we may revisit
         * this in the future.
         */
-       if (vcpu->kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3)
+       switch (vcpu->kvm->arch.vgic.vgic_model) {
+       case KVM_DEV_TYPE_ARM_VGIC_V3:
                lr_val |= ICH_LR_GROUP;
-       else
-               lr_val |= (u32)lr_desc.source << GICH_LR_PHYSID_CPUID_SHIFT;
+               break;
+       case  KVM_DEV_TYPE_ARM_VGIC_V2:
+               if (lr_desc.irq < VGIC_NR_SGIS)
+                       lr_val |= (u32)lr_desc.source << GICH_LR_PHYSID_CPUID_SHIFT;
+               break;
+       default:
+               BUG();
+       }
 
        if (lr_desc.state & LR_STATE_PENDING)
                lr_val |= ICH_LR_PENDING_BIT;
@@ -95,13 +106,13 @@ static void vgic_v3_set_lr(struct kvm_vcpu *vcpu, int lr,
                lr_val |= ICH_LR_ACTIVE_BIT;
        if (lr_desc.state & LR_EOI_INT)
                lr_val |= ICH_LR_EOI;
+       if (lr_desc.state & LR_HW) {
+               lr_val |= ICH_LR_HW;
+               lr_val |= ((u64)lr_desc.hwirq) << ICH_LR_PHYS_ID_SHIFT;
+       }
 
        vcpu->arch.vgic_cpu.vgic_v3.vgic_lr[LR_INDEX(lr)] = lr_val;
-}
 
-static void vgic_v3_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr,
-                                 struct vgic_lr lr_desc)
-{
        if (!(lr_desc.state & LR_STATE_MASK))
                vcpu->arch.vgic_cpu.vgic_v3.vgic_elrsr |= (1U << lr);
        else
@@ -178,6 +189,7 @@ static void vgic_v3_enable(struct kvm_vcpu *vcpu)
         * anyway.
         */
        vgic_v3->vgic_vmcr = 0;
+       vgic_v3->vgic_elrsr = ~0;
 
        /*
         * If we are emulating a GICv3, we do it in an non-GICv2-compatible
@@ -196,7 +208,6 @@ static void vgic_v3_enable(struct kvm_vcpu *vcpu)
 static const struct vgic_ops vgic_v3_ops = {
        .get_lr                 = vgic_v3_get_lr,
        .set_lr                 = vgic_v3_set_lr,
-       .sync_lr_elrsr          = vgic_v3_sync_lr_elrsr,
        .get_elrsr              = vgic_v3_get_elrsr,
        .get_eisr               = vgic_v3_get_eisr,
        .clear_eisr             = vgic_v3_clear_eisr,
@@ -273,7 +284,7 @@ int vgic_v3_probe(struct device_node *vgic_node,
 
        vgic->vctrl_base = NULL;
        vgic->type = VGIC_V3;
-       vgic->max_gic_vcpus = KVM_MAX_VCPUS;
+       vgic->max_gic_vcpus = VGIC_V3_MAX_CPUS;
 
        kvm_info("%s@%llx IRQ%d\n", vgic_node->name,
                 vcpu_res.start, vgic->maint_irq);