diff --git a/arch/arm64/include/asm/kvm_pkvm.h b/arch/arm64/include/asm/kvm_pkvm.h index 2da3f274fe11..014f13c04b4b 100644 --- a/arch/arm64/include/asm/kvm_pkvm.h +++ b/arch/arm64/include/asm/kvm_pkvm.h @@ -16,7 +16,7 @@ #define HYP_MEMBLOCK_REGIONS 128 -int pkvm_init_host_vm(struct kvm *kvm); +int pkvm_init_host_vm(struct kvm *kvm, unsigned long type); int pkvm_create_hyp_vm(struct kvm *kvm); void pkvm_destroy_hyp_vm(struct kvm *kvm); diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 9bbd10b2cdaf..79fe530159cc 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -145,11 +145,14 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) { int ret; + if (type & ~KVM_VM_TYPE_MASK) + return -EINVAL; + ret = kvm_share_hyp(kvm, kvm + 1); if (ret) return ret; - ret = pkvm_init_host_vm(kvm); + ret = pkvm_init_host_vm(kvm, type); if (ret) goto err_unshare_kvm; diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 3dc1ebc923d6..d7138520e0f1 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -709,9 +709,6 @@ int kvm_init_stage2_mmu(struct kvm *kvm, struct kvm_s2_mmu *mmu, unsigned long t u64 mmfr0, mmfr1; u32 phys_shift; - if (type & ~KVM_VM_TYPE_ARM_IPA_SIZE_MASK) - return -EINVAL; - phys_shift = KVM_VM_TYPE_ARM_IPA_SIZE(type); if (is_protected_kvm_enabled()) { phys_shift = kvm_ipa_limit; diff --git a/arch/arm64/kvm/pkvm.c b/arch/arm64/kvm/pkvm.c index d97d17c96321..8e9bcf75e3e3 100644 --- a/arch/arm64/kvm/pkvm.c +++ b/arch/arm64/kvm/pkvm.c @@ -235,8 +235,16 @@ void pkvm_destroy_hyp_vm(struct kvm *host_kvm) } } -int pkvm_init_host_vm(struct kvm *host_kvm) +int pkvm_init_host_vm(struct kvm *host_kvm, unsigned long type) { mutex_init(&host_kvm->lock); + + if (!(type & KVM_VM_TYPE_ARM_PROTECTED)) + return 0; + + if (!is_protected_kvm_enabled()) + return -EINVAL; + + host_kvm->arch.pkvm.enabled = true; return 0; } diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 0d5d4419139a..48916ae8099c 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -911,6 +911,12 @@ struct kvm_ppc_resize_hpt { #define KVM_VM_TYPE_ARM_IPA_SIZE_MASK 0xffULL #define KVM_VM_TYPE_ARM_IPA_SIZE(x) \ ((x) & KVM_VM_TYPE_ARM_IPA_SIZE_MASK) + +#define KVM_VM_TYPE_ARM_PROTECTED (1UL << 31) + +#define KVM_VM_TYPE_MASK (KVM_VM_TYPE_ARM_IPA_SIZE_MASK | \ + KVM_VM_TYPE_ARM_PROTECTED) + /* * ioctls for /dev/kvm fds: */