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96 lines
2.5 KiB
96 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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#ifndef __KVM_HYP_MM_H |
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#define __KVM_HYP_MM_H |
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#include <asm/kvm_pgtable.h> |
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#include <asm/spectre.h> |
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#include <linux/memblock.h> |
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#include <linux/types.h> |
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#include <nvhe/memory.h> |
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#include <nvhe/spinlock.h> |
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#define HYP_MEMBLOCK_REGIONS 128 |
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extern struct memblock_region kvm_nvhe_sym(hyp_memory)[]; |
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extern unsigned int kvm_nvhe_sym(hyp_memblock_nr); |
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extern struct kvm_pgtable pkvm_pgtable; |
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extern hyp_spinlock_t pkvm_pgd_lock; |
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extern struct hyp_pool hpool; |
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extern u64 __io_map_base; |
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int hyp_create_idmap(u32 hyp_va_bits); |
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int hyp_map_vectors(void); |
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int hyp_back_vmemmap(phys_addr_t phys, unsigned long size, phys_addr_t back); |
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int pkvm_cpu_set_vector(enum arm64_hyp_spectre_vector slot); |
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int pkvm_create_mappings(void *from, void *to, enum kvm_pgtable_prot prot); |
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int pkvm_create_mappings_locked(void *from, void *to, enum kvm_pgtable_prot prot); |
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unsigned long __pkvm_create_private_mapping(phys_addr_t phys, size_t size, |
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enum kvm_pgtable_prot prot); |
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static inline void hyp_vmemmap_range(phys_addr_t phys, unsigned long size, |
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unsigned long *start, unsigned long *end) |
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{ |
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unsigned long nr_pages = size >> PAGE_SHIFT; |
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struct hyp_page *p = hyp_phys_to_page(phys); |
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*start = (unsigned long)p; |
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*end = *start + nr_pages * sizeof(struct hyp_page); |
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*start = ALIGN_DOWN(*start, PAGE_SIZE); |
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*end = ALIGN(*end, PAGE_SIZE); |
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} |
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static inline unsigned long __hyp_pgtable_max_pages(unsigned long nr_pages) |
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{ |
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unsigned long total = 0, i; |
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/* Provision the worst case scenario */ |
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for (i = 0; i < KVM_PGTABLE_MAX_LEVELS; i++) { |
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nr_pages = DIV_ROUND_UP(nr_pages, PTRS_PER_PTE); |
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total += nr_pages; |
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} |
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return total; |
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} |
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static inline unsigned long __hyp_pgtable_total_pages(void) |
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{ |
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unsigned long res = 0, i; |
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/* Cover all of memory with page-granularity */ |
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for (i = 0; i < kvm_nvhe_sym(hyp_memblock_nr); i++) { |
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struct memblock_region *reg = &kvm_nvhe_sym(hyp_memory)[i]; |
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res += __hyp_pgtable_max_pages(reg->size >> PAGE_SHIFT); |
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} |
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return res; |
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} |
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static inline unsigned long hyp_s1_pgtable_pages(void) |
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{ |
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unsigned long res; |
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res = __hyp_pgtable_total_pages(); |
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/* Allow 1 GiB for private mappings */ |
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res += __hyp_pgtable_max_pages(SZ_1G >> PAGE_SHIFT); |
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return res; |
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} |
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static inline unsigned long host_s2_pgtable_pages(void) |
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{ |
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unsigned long res; |
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/* |
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* Include an extra 16 pages to safely upper-bound the worst case of |
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* concatenated pgds. |
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*/ |
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res = __hyp_pgtable_total_pages() + 16; |
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/* Allow 1 GiB for MMIO mappings */ |
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res += __hyp_pgtable_max_pages(SZ_1G >> PAGE_SHIFT); |
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return res; |
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} |
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#endif /* __KVM_HYP_MM_H */
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