Hi Suzuki,
On 9/17/18 12:41 PM, Suzuki K Poulose wrote:
> Allow the arch backends to perform VM specific initialisation.
> This will be later used to handle IPA size configuration and per-VM
> VTCR configuration on arm64.
>
> Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
> Cc: Christoffer Dall <cdall@xxxxxxxxxx>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Thanks
Eric
> ---
> arch/arm/include/asm/kvm_host.h | 7 +++++++
> arch/arm64/include/asm/kvm_host.h | 2 ++
> arch/arm64/kvm/reset.c | 7 +++++++
> virt/kvm/arm/arm.c | 5 +++--
> 4 files changed, 19 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
> index 3ad482d2f1eb..72d46418e1ef 100644
> --- a/arch/arm/include/asm/kvm_host.h
> +++ b/arch/arm/include/asm/kvm_host.h
> @@ -354,4 +354,11 @@ static inline void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu) {}
> struct kvm *kvm_arch_alloc_vm(void);
> void kvm_arch_free_vm(struct kvm *kvm);
>
> +static inline int kvm_arm_config_vm(struct kvm *kvm, unsigned long type)
> +{
> + if (type)
> + return -EINVAL;
> + return 0;
> +}
> +
> #endif /* __ARM_KVM_HOST_H__ */
> diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
> index 3d6d7336f871..b04280ae1be0 100644
> --- a/arch/arm64/include/asm/kvm_host.h
> +++ b/arch/arm64/include/asm/kvm_host.h
> @@ -513,4 +513,6 @@ void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu);
> struct kvm *kvm_arch_alloc_vm(void);
> void kvm_arch_free_vm(struct kvm *kvm);
>
> +int kvm_arm_config_vm(struct kvm *kvm, unsigned long type);
> +
> #endif /* __ARM64_KVM_HOST_H__ */
> diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
> index e37c78bbe1ca..b0c07dab5cb3 100644
> --- a/arch/arm64/kvm/reset.c
> +++ b/arch/arm64/kvm/reset.c
> @@ -133,3 +133,10 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
> /* Reset timer */
> return kvm_timer_vcpu_reset(vcpu);
> }
> +
> +int kvm_arm_config_vm(struct kvm *kvm, unsigned long type)
> +{
> + if (type)
> + return -EINVAL;
> + return 0;
> +}
> diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
> index c92053bc3f96..327d0fd28380 100644
> --- a/virt/kvm/arm/arm.c
> +++ b/virt/kvm/arm/arm.c
> @@ -120,8 +120,9 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
> {
> int ret, cpu;
>
> - if (type)
> - return -EINVAL;
> + ret = kvm_arm_config_vm(kvm, type);
> + if (ret)
> + return ret;
>
> kvm->arch.last_vcpu_ran = alloc_percpu(typeof(*kvm->arch.last_vcpu_ran));
> if (!kvm->arch.last_vcpu_ran)
>
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