KVM: arm/arm64: Demote kvm_arm_init_arch_resources() to just set up SVE

The introduction of kvm_arm_init_arch_resources() looks like
premature factoring, since nothing else uses this hook yet and it
is not clear what will use it in the future.

For now, let's not pretend that this is a general thing:

This patch simply renames the function to kvm_arm_init_sve(),
retaining the arm stub version under the new name.
Suggested-by: NAndrew Jones <drjones@redhat.com>
Signed-off-by: NDave Martin <Dave.Martin@arm.com>
Reviewed-by: NAndrew Jones <drjones@redhat.com>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>

arch/arm/include/asm/kvm_host.h

@@ -54,7 +54,7 @@
 
 DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use);
 
-static inline int kvm_arm_init_arch_resources(void) { return 0; }
+static inline int kvm_arm_init_sve(void) { return 0; }
 
 u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode);
 int __attribute_const__ kvm_target_cpu(void);

arch/arm64/include/asm/kvm_host.h

@@ -59,7 +59,7 @@
 DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use);
 
 extern unsigned int kvm_sve_max_vl;
-int kvm_arm_init_arch_resources(void);
+int kvm_arm_init_sve(void);
 
 int __attribute_const__ kvm_target_cpu(void);
 int kvm_reset_vcpu(struct kvm_vcpu *vcpu);

arch/arm64/kvm/reset.c

@@ -110,7 +110,7 @@ int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 
 unsigned int kvm_sve_max_vl;
 
-int kvm_arm_init_arch_resources(void)
+int kvm_arm_init_sve(void)
 {
 	if (system_supports_sve()) {
 		kvm_sve_max_vl = sve_max_virtualisable_vl;

virt/kvm/arm/arm.c

@@ -1682,7 +1682,7 @@ int kvm_arch_init(void *opaque)
 	if (err)
 		return err;
 
-	err = kvm_arm_init_arch_resources();
+	err = kvm_arm_init_sve();
 	if (err)
 		return err;