[PATCH 03/17] KVM: arm64: Add __hyp_allocator_map for the pKVM hyp
From: Vincent Donnefort <hidden>
Date: 2026-05-20 15:27:30
Also in:
kvmarm
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
In preparation for the pKVM heap allocator, introduce __hyp_allocator_map() to map a single physical page to a given virtual address in the hypervisor stage-1 page-table. Signed-off-by: Vincent Donnefort <redacted>
diff --git a/arch/arm64/kvm/hyp/include/nvhe/mm.h b/arch/arm64/kvm/hyp/include/nvhe/mm.h
index 725bb0fb941d..98a7774b541c 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/mm.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/mm.h@@ -32,5 +32,6 @@ int __pkvm_create_private_mapping(phys_addr_t phys, size_t size, int pkvm_create_stack(phys_addr_t phys, unsigned long *haddr); int pkvm_alloc_private_va_range(size_t size, unsigned long *haddr); phys_addr_t __pkvm_private_range_pa(void *va); +int __hyp_allocator_map(void *va, phys_addr_t phys); #endif /* __KVM_HYP_MM_H */
diff --git a/arch/arm64/kvm/hyp/nvhe/mm.c b/arch/arm64/kvm/hyp/nvhe/mm.c
index ec59da1322a7..c1c01f81ac5f 100644
--- a/arch/arm64/kvm/hyp/nvhe/mm.c
+++ b/arch/arm64/kvm/hyp/nvhe/mm.c@@ -160,6 +160,11 @@ void pkvm_remove_mappings(void *from, void *to) hyp_spin_unlock(&pkvm_pgd_lock); } +int __hyp_allocator_map(void *va, phys_addr_t phys) +{ + return __pkvm_create_mappings((unsigned long)va, PAGE_SIZE, phys, PAGE_HYP); +} + int hyp_back_vmemmap(phys_addr_t back) { unsigned long i, start, size, end = 0;
--
2.54.0.631.ge1b05301d1-goog