KVM: ARM: vgic: abstract VMCR access
Instead of directly messing with with the GICH_VMCR bits for the CPU
interface save/restore code, add accessors that encode/decode the
entire set of registers exposed by VMCR.
Not the most efficient thing, but given that this code is only used
by the save/restore code, performance is far from being critical.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index cdfa5d9..f515800 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -81,6 +81,13 @@
u8 state;
};
+struct vgic_vmcr {
+ u32 ctlr;
+ u32 abpr;
+ u32 bpr;
+ u32 pmr;
+};
+
struct vgic_ops {
struct vgic_lr (*get_lr)(const struct kvm_vcpu *, int);
void (*set_lr)(struct kvm_vcpu *, int, struct vgic_lr);
@@ -90,6 +97,8 @@
u32 (*get_interrupt_status)(const struct kvm_vcpu *vcpu);
void (*enable_underflow)(struct kvm_vcpu *vcpu);
void (*disable_underflow)(struct kvm_vcpu *vcpu);
+ void (*get_vmcr)(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
+ void (*set_vmcr)(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
};
struct vgic_dist {