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ANDROID: KVM: arm64: Introduce predicates to check for protected state

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In order to determine whether or not a VM or (hyp) vCPU are protected,
introduce a helper function to query this state. For now, these will
always return 'false' as the underlying field is never configured.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Change-Id: Ib39d510d56b5d96d97526d725c7768d4fe5cf752
This commit is contained in:
Marc Zyngier
2022-04-20 11:10:17 +01:00
committed by Will Deacon
parent d1a0be6f60
commit e36af628ae
2 changed files with 15 additions and 4 deletions
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6
arch/arm64/include/asm/kvm_host.h
View File

@@ -183,6 +183,7 @@ struct kvm_protected_vm {
pkvm_handle_t handle;
struct kvm_hyp_memcache teardown_mc;
struct list_head pinned_pages;
bool enabled;
};
struct kvm_arch {
@@ -1037,10 +1038,7 @@ int kvm_set_ipa_limit(void);
struct kvm *kvm_arch_alloc_vm(void);
void kvm_arch_free_vm(struct kvm *kvm);
static inline bool kvm_vm_is_protected(struct kvm *kvm)
{
return false;
}
#define kvm_vm_is_protected(kvm) ((kvm)->arch.pkvm.enabled)
void kvm_init_protected_traps(struct kvm_vcpu *vcpu);

13
arch/arm64/kvm/hyp/include/nvhe/pkvm.h
View File

@@ -53,6 +53,19 @@ pkvm_hyp_vcpu_to_hyp_vm(struct pkvm_hyp_vcpu *hyp_vcpu)
return container_of(hyp_vcpu->vcpu.kvm, struct pkvm_hyp_vm, kvm);
}
static inline bool vcpu_is_protected(struct kvm_vcpu *vcpu)
{
if (!is_protected_kvm_enabled())
return false;
return vcpu->kvm->arch.pkvm.enabled;
}
static inline bool pkvm_hyp_vcpu_is_protected(struct pkvm_hyp_vcpu *hyp_vcpu)
{
return vcpu_is_protected(&hyp_vcpu->vcpu);
}
void pkvm_hyp_vm_table_init(void *tbl);
int __pkvm_init_vm(struct kvm *host_kvm, unsigned long vm_hva,