[PATCH v2 05/15] KVM: arm/arm64: make GIC frame address initialization model specific

[Eric Auger]

On 07/10/2015 04:21 PM, Andre Przywara wrote:
> Currently we initialize all the possible GIC frame addresses in one
> function, without looking at the specific GIC model we instantiate
> for the guest.
> As this gets confusing when adding another VGIC model later, lets
> move these initializations into the respective model's init 
nit: tobe more precise the init emulation function (not the
vgic_v2/v3_init_model model's init function). pfouh?! ;-)
functions.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>  virt/kvm/arm/vgic-v2-emul.c | 3 +++
>  virt/kvm/arm/vgic-v3-emul.c | 3 +++
>  virt/kvm/arm/vgic.c         | 3 ---
>  3 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/virt/kvm/arm/vgic-v2-emul.c b/virt/kvm/arm/vgic-v2-emul.c
> index 1390797..8faa28c 100644
> --- a/virt/kvm/arm/vgic-v2-emul.c
> +++ b/virt/kvm/arm/vgic-v2-emul.c
> @@ -567,6 +567,9 @@ void vgic_v2_init_emulation(struct kvm *kvm)
>  	dist->vm_ops.init_model = vgic_v2_init_model;
>  	dist->vm_ops.map_resources = vgic_v2_map_resources;
>  
> +	dist->vgic_cpu_base = VGIC_ADDR_UNDEF;
> +	dist->vgic_dist_base = VGIC_ADDR_UNDEF;
Looks strange to see the common dist_base here. Why don't you leave it
in common part, kvm_vgic_create; all the more so you left
kvm->arch.vgic.vctrl_base = vgic->vctrl_base in kvm_vgic_create.

Eric
> +
>  	kvm->arch.max_vcpus = VGIC_V2_MAX_CPUS;
>  }
>  
> diff --git a/virt/kvm/arm/vgic-v3-emul.c b/virt/kvm/arm/vgic-v3-emul.c
> index d2eeb20..1f42348 100644
> --- a/virt/kvm/arm/vgic-v3-emul.c
> +++ b/virt/kvm/arm/vgic-v3-emul.c
> @@ -885,6 +885,9 @@ void vgic_v3_init_emulation(struct kvm *kvm)
>  	dist->vm_ops.destroy_model = vgic_v3_destroy_model;
>  	dist->vm_ops.map_resources = vgic_v3_map_resources;
>  
> +	dist->vgic_dist_base = VGIC_ADDR_UNDEF;
> +	dist->vgic_redist_base = VGIC_ADDR_UNDEF;
> +
>  	kvm->arch.max_vcpus = KVM_MAX_VCPUS;
>  }
>  
> diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
> index cc8f5ed..59f1801 100644
> --- a/virt/kvm/arm/vgic.c
> +++ b/virt/kvm/arm/vgic.c
> @@ -1830,9 +1830,6 @@ int kvm_vgic_create(struct kvm *kvm, u32 type)
>  	kvm->arch.vgic.in_kernel = true;
>  	kvm->arch.vgic.vgic_model = type;
>  	kvm->arch.vgic.vctrl_base = vgic->vctrl_base;
> -	kvm->arch.vgic.vgic_dist_base = VGIC_ADDR_UNDEF;
> -	kvm->arch.vgic.vgic_cpu_base = VGIC_ADDR_UNDEF;
> -	kvm->arch.vgic.vgic_redist_base = VGIC_ADDR_UNDEF;
>  
>  out_unlock:
>  	for (; vcpu_lock_idx >= 0; vcpu_lock_idx--) {
>