diff options
Diffstat (limited to 'arch/arm64/include/asm/kvm_pkvm.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_pkvm.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_pkvm.h b/arch/arm64/include/asm/kvm_pkvm.h index ad9cfb5c1ff4..eb65f12e81d9 100644 --- a/arch/arm64/include/asm/kvm_pkvm.h +++ b/arch/arm64/include/asm/kvm_pkvm.h @@ -20,6 +20,31 @@ int pkvm_init_host_vm(struct kvm *kvm); int pkvm_create_hyp_vm(struct kvm *kvm); void pkvm_destroy_hyp_vm(struct kvm *kvm); +/* + * This functions as an allow-list of protected VM capabilities. + * Features not explicitly allowed by this function are denied. + */ +static inline bool kvm_pvm_ext_allowed(long ext) +{ + switch (ext) { + case KVM_CAP_IRQCHIP: + case KVM_CAP_ARM_PSCI: + case KVM_CAP_ARM_PSCI_0_2: + case KVM_CAP_NR_VCPUS: + case KVM_CAP_MAX_VCPUS: + case KVM_CAP_MAX_VCPU_ID: + case KVM_CAP_MSI_DEVID: + case KVM_CAP_ARM_VM_IPA_SIZE: + case KVM_CAP_ARM_PMU_V3: + case KVM_CAP_ARM_SVE: + case KVM_CAP_ARM_PTRAUTH_ADDRESS: + case KVM_CAP_ARM_PTRAUTH_GENERIC: + return true; + default: + return false; + } +} + extern struct memblock_region kvm_nvhe_sym(hyp_memory)[]; extern unsigned int kvm_nvhe_sym(hyp_memblock_nr); @@ -128,4 +153,39 @@ static inline unsigned long hyp_ffa_proxy_pages(void) return (2 * KVM_FFA_MBOX_NR_PAGES) + DIV_ROUND_UP(desc_max, PAGE_SIZE); } +static inline size_t pkvm_host_sve_state_size(void) +{ + if (!system_supports_sve()) + return 0; + + return size_add(sizeof(struct cpu_sve_state), + SVE_SIG_REGS_SIZE(sve_vq_from_vl(kvm_host_sve_max_vl))); +} + +struct pkvm_mapping { + struct rb_node node; + u64 gfn; + u64 pfn; +}; + +int pkvm_pgtable_stage2_init(struct kvm_pgtable *pgt, struct kvm_s2_mmu *mmu, + struct kvm_pgtable_mm_ops *mm_ops); +void pkvm_pgtable_stage2_destroy(struct kvm_pgtable *pgt); +int pkvm_pgtable_stage2_map(struct kvm_pgtable *pgt, u64 addr, u64 size, u64 phys, + enum kvm_pgtable_prot prot, void *mc, + enum kvm_pgtable_walk_flags flags); +int pkvm_pgtable_stage2_unmap(struct kvm_pgtable *pgt, u64 addr, u64 size); +int pkvm_pgtable_stage2_wrprotect(struct kvm_pgtable *pgt, u64 addr, u64 size); +int pkvm_pgtable_stage2_flush(struct kvm_pgtable *pgt, u64 addr, u64 size); +bool pkvm_pgtable_stage2_test_clear_young(struct kvm_pgtable *pgt, u64 addr, u64 size, bool mkold); +int pkvm_pgtable_stage2_relax_perms(struct kvm_pgtable *pgt, u64 addr, enum kvm_pgtable_prot prot, + enum kvm_pgtable_walk_flags flags); +void pkvm_pgtable_stage2_mkyoung(struct kvm_pgtable *pgt, u64 addr, + enum kvm_pgtable_walk_flags flags); +int pkvm_pgtable_stage2_split(struct kvm_pgtable *pgt, u64 addr, u64 size, + struct kvm_mmu_memory_cache *mc); +void pkvm_pgtable_stage2_free_unlinked(struct kvm_pgtable_mm_ops *mm_ops, void *pgtable, s8 level); +kvm_pte_t *pkvm_pgtable_stage2_create_unlinked(struct kvm_pgtable *pgt, u64 phys, s8 level, + enum kvm_pgtable_prot prot, void *mc, + bool force_pte); #endif /* __ARM64_KVM_PKVM_H__ */ |