Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Quentin Perret | 425 | 100.00% | 2 | 100.00% |
Total | 425 | 2 |
/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef __KVM_HYP_MM_H #define __KVM_HYP_MM_H #include <asm/kvm_pgtable.h> #include <asm/spectre.h> #include <linux/memblock.h> #include <linux/types.h> #include <nvhe/memory.h> #include <nvhe/spinlock.h> #define HYP_MEMBLOCK_REGIONS 128 extern struct memblock_region kvm_nvhe_sym(hyp_memory)[]; extern unsigned int kvm_nvhe_sym(hyp_memblock_nr); extern struct kvm_pgtable pkvm_pgtable; extern hyp_spinlock_t pkvm_pgd_lock; extern struct hyp_pool hpool; extern u64 __io_map_base; int hyp_create_idmap(u32 hyp_va_bits); int hyp_map_vectors(void); int hyp_back_vmemmap(phys_addr_t phys, unsigned long size, phys_addr_t back); int pkvm_cpu_set_vector(enum arm64_hyp_spectre_vector slot); int pkvm_create_mappings(void *from, void *to, enum kvm_pgtable_prot prot); int __pkvm_create_mappings(unsigned long start, unsigned long size, unsigned long phys, enum kvm_pgtable_prot prot); unsigned long __pkvm_create_private_mapping(phys_addr_t phys, size_t size, enum kvm_pgtable_prot prot); static inline void hyp_vmemmap_range(phys_addr_t phys, unsigned long size, unsigned long *start, unsigned long *end) { unsigned long nr_pages = size >> PAGE_SHIFT; struct hyp_page *p = hyp_phys_to_page(phys); *start = (unsigned long)p; *end = *start + nr_pages * sizeof(struct hyp_page); *start = ALIGN_DOWN(*start, PAGE_SIZE); *end = ALIGN(*end, PAGE_SIZE); } static inline unsigned long __hyp_pgtable_max_pages(unsigned long nr_pages) { unsigned long total = 0, i; /* Provision the worst case scenario */ for (i = 0; i < KVM_PGTABLE_MAX_LEVELS; i++) { nr_pages = DIV_ROUND_UP(nr_pages, PTRS_PER_PTE); total += nr_pages; } return total; } static inline unsigned long __hyp_pgtable_total_pages(void) { unsigned long res = 0, i; /* Cover all of memory with page-granularity */ for (i = 0; i < kvm_nvhe_sym(hyp_memblock_nr); i++) { struct memblock_region *reg = &kvm_nvhe_sym(hyp_memory)[i]; res += __hyp_pgtable_max_pages(reg->size >> PAGE_SHIFT); } return res; } static inline unsigned long hyp_s1_pgtable_pages(void) { unsigned long res; res = __hyp_pgtable_total_pages(); /* Allow 1 GiB for private mappings */ res += __hyp_pgtable_max_pages(SZ_1G >> PAGE_SHIFT); return res; } static inline unsigned long host_s2_mem_pgtable_pages(void) { /* * Include an extra 16 pages to safely upper-bound the worst case of * concatenated pgds. */ return __hyp_pgtable_total_pages() + 16; } static inline unsigned long host_s2_dev_pgtable_pages(void) { /* Allow 1 GiB for MMIO mappings */ return __hyp_pgtable_max_pages(SZ_1G >> PAGE_SHIFT); } #endif /* __KVM_HYP_MM_H */
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