include/nvhe/mm.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 #ifndef __KVM_HYP_MM_H
0003 #define __KVM_HYP_MM_H
0004
0005 #include <asm/kvm_pgtable.h>
0006 #include <asm/spectre.h>
0007 #include <linux/memblock.h>
0008 #include <linux/types.h>
0009
0010 #include <nvhe/memory.h>
0011 #include <nvhe/spinlock.h>
0012
0013 extern struct kvm_pgtable pkvm_pgtable;
0014 extern hyp_spinlock_t pkvm_pgd_lock;
0015
0016 int hyp_create_idmap(u32 hyp_va_bits);
0017 int hyp_map_vectors(void);
0018 int hyp_back_vmemmap(phys_addr_t phys, unsigned long size, phys_addr_t back);
0019 int pkvm_cpu_set_vector(enum arm64_hyp_spectre_vector slot);
0020 int pkvm_create_mappings(void *from, void *to, enum kvm_pgtable_prot prot);
0021 int pkvm_create_mappings_locked(void *from, void *to, enum kvm_pgtable_prot prot);
0022 int __pkvm_create_private_mapping(phys_addr_t phys, size_t size,
0023                   enum kvm_pgtable_prot prot,
0024                   unsigned long *haddr);
0025 int pkvm_alloc_private_va_range(size_t size, unsigned long *haddr);
0026
0027 static inline void hyp_vmemmap_range(phys_addr_t phys, unsigned long size,
0028                      unsigned long *start, unsigned long *end)
0029 {
0030     unsigned long nr_pages = size >> PAGE_SHIFT;
0031     struct hyp_page *p = hyp_phys_to_page(phys);
0032
0033     *start = (unsigned long)p;
0034     *end = *start + nr_pages * sizeof(struct hyp_page);
0035     *start = ALIGN_DOWN(*start, PAGE_SIZE);
0036     *end = ALIGN(*end, PAGE_SIZE);
0037 }
0038
0039 #endif /* __KVM_HYP_MM_H */