diff options
Diffstat (limited to 'arch/arm64/include/asm/stage2_pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/stage2_pgtable.h | 206 |
1 files changed, 3 insertions, 203 deletions
diff --git a/arch/arm64/include/asm/stage2_pgtable.h b/arch/arm64/include/asm/stage2_pgtable.h index 326aac658b9d..23d27623e478 100644 --- a/arch/arm64/include/asm/stage2_pgtable.h +++ b/arch/arm64/include/asm/stage2_pgtable.h @@ -8,15 +8,7 @@ #ifndef __ARM64_S2_PGTABLE_H_ #define __ARM64_S2_PGTABLE_H_ -#include <linux/hugetlb.h> -#include <asm/pgtable.h> - -/* - * PGDIR_SHIFT determines the size a top-level page table entry can map - * and depends on the number of levels in the page table. Compute the - * PGDIR_SHIFT for a given number of levels. - */ -#define pt_levels_pgdir_shift(lvls) ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - (lvls)) +#include <linux/pgtable.h> /* * The hardware supports concatenation of up to 16 tables at stage2 entry @@ -29,205 +21,13 @@ * (IPA_SHIFT - 4). */ #define stage2_pgtable_levels(ipa) ARM64_HW_PGTABLE_LEVELS((ipa) - 4) -#define kvm_stage2_levels(kvm) VTCR_EL2_LVLS(kvm->arch.vtcr) - -/* stage2_pgdir_shift() is the size mapped by top-level stage2 entry for the VM */ -#define stage2_pgdir_shift(kvm) pt_levels_pgdir_shift(kvm_stage2_levels(kvm)) -#define stage2_pgdir_size(kvm) (1ULL << stage2_pgdir_shift(kvm)) -#define stage2_pgdir_mask(kvm) ~(stage2_pgdir_size(kvm) - 1) - -/* - * The number of PTRS across all concatenated stage2 tables given by the - * number of bits resolved at the initial level. - * If we force more levels than necessary, we may have (stage2_pgdir_shift > IPA), - * in which case, stage2_pgd_ptrs will have one entry. - */ -#define pgd_ptrs_shift(ipa, pgdir_shift) \ - ((ipa) > (pgdir_shift) ? ((ipa) - (pgdir_shift)) : 0) -#define __s2_pgd_ptrs(ipa, lvls) \ - (1 << (pgd_ptrs_shift((ipa), pt_levels_pgdir_shift(lvls)))) -#define __s2_pgd_size(ipa, lvls) (__s2_pgd_ptrs((ipa), (lvls)) * sizeof(pgd_t)) - -#define stage2_pgd_ptrs(kvm) __s2_pgd_ptrs(kvm_phys_shift(kvm), kvm_stage2_levels(kvm)) -#define stage2_pgd_size(kvm) __s2_pgd_size(kvm_phys_shift(kvm), kvm_stage2_levels(kvm)) +#define kvm_stage2_levels(mmu) VTCR_EL2_LVLS((mmu)->vtcr) /* * kvm_mmmu_cache_min_pages() is the number of pages required to install * a stage-2 translation. We pre-allocate the entry level page table at * the VM creation. */ -#define kvm_mmu_cache_min_pages(kvm) (kvm_stage2_levels(kvm) - 1) - -/* Stage2 PUD definitions when the level is present */ -static inline bool kvm_stage2_has_pud(struct kvm *kvm) -{ - return (CONFIG_PGTABLE_LEVELS > 3) && (kvm_stage2_levels(kvm) > 3); -} - -#define S2_PUD_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(1) -#define S2_PUD_SIZE (1UL << S2_PUD_SHIFT) -#define S2_PUD_MASK (~(S2_PUD_SIZE - 1)) - -static inline bool stage2_pgd_none(struct kvm *kvm, pgd_t pgd) -{ - if (kvm_stage2_has_pud(kvm)) - return pgd_none(pgd); - else - return 0; -} - -static inline void stage2_pgd_clear(struct kvm *kvm, pgd_t *pgdp) -{ - if (kvm_stage2_has_pud(kvm)) - pgd_clear(pgdp); -} - -static inline bool stage2_pgd_present(struct kvm *kvm, pgd_t pgd) -{ - if (kvm_stage2_has_pud(kvm)) - return pgd_present(pgd); - else - return 1; -} - -static inline void stage2_pgd_populate(struct kvm *kvm, pgd_t *pgd, pud_t *pud) -{ - if (kvm_stage2_has_pud(kvm)) - pgd_populate(NULL, pgd, pud); -} - -static inline pud_t *stage2_pud_offset(struct kvm *kvm, - pgd_t *pgd, unsigned long address) -{ - if (kvm_stage2_has_pud(kvm)) - return pud_offset(pgd, address); - else - return (pud_t *)pgd; -} - -static inline void stage2_pud_free(struct kvm *kvm, pud_t *pud) -{ - if (kvm_stage2_has_pud(kvm)) - free_page((unsigned long)pud); -} - -static inline bool stage2_pud_table_empty(struct kvm *kvm, pud_t *pudp) -{ - if (kvm_stage2_has_pud(kvm)) - return kvm_page_empty(pudp); - else - return false; -} - -static inline phys_addr_t -stage2_pud_addr_end(struct kvm *kvm, phys_addr_t addr, phys_addr_t end) -{ - if (kvm_stage2_has_pud(kvm)) { - phys_addr_t boundary = (addr + S2_PUD_SIZE) & S2_PUD_MASK; - - return (boundary - 1 < end - 1) ? boundary : end; - } else { - return end; - } -} - -/* Stage2 PMD definitions when the level is present */ -static inline bool kvm_stage2_has_pmd(struct kvm *kvm) -{ - return (CONFIG_PGTABLE_LEVELS > 2) && (kvm_stage2_levels(kvm) > 2); -} - -#define S2_PMD_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(2) -#define S2_PMD_SIZE (1UL << S2_PMD_SHIFT) -#define S2_PMD_MASK (~(S2_PMD_SIZE - 1)) - -static inline bool stage2_pud_none(struct kvm *kvm, pud_t pud) -{ - if (kvm_stage2_has_pmd(kvm)) - return pud_none(pud); - else - return 0; -} - -static inline void stage2_pud_clear(struct kvm *kvm, pud_t *pud) -{ - if (kvm_stage2_has_pmd(kvm)) - pud_clear(pud); -} - -static inline bool stage2_pud_present(struct kvm *kvm, pud_t pud) -{ - if (kvm_stage2_has_pmd(kvm)) - return pud_present(pud); - else - return 1; -} - -static inline void stage2_pud_populate(struct kvm *kvm, pud_t *pud, pmd_t *pmd) -{ - if (kvm_stage2_has_pmd(kvm)) - pud_populate(NULL, pud, pmd); -} - -static inline pmd_t *stage2_pmd_offset(struct kvm *kvm, - pud_t *pud, unsigned long address) -{ - if (kvm_stage2_has_pmd(kvm)) - return pmd_offset(pud, address); - else - return (pmd_t *)pud; -} - -static inline void stage2_pmd_free(struct kvm *kvm, pmd_t *pmd) -{ - if (kvm_stage2_has_pmd(kvm)) - free_page((unsigned long)pmd); -} - -static inline bool stage2_pud_huge(struct kvm *kvm, pud_t pud) -{ - if (kvm_stage2_has_pmd(kvm)) - return pud_huge(pud); - else - return 0; -} - -static inline bool stage2_pmd_table_empty(struct kvm *kvm, pmd_t *pmdp) -{ - if (kvm_stage2_has_pmd(kvm)) - return kvm_page_empty(pmdp); - else - return 0; -} - -static inline phys_addr_t -stage2_pmd_addr_end(struct kvm *kvm, phys_addr_t addr, phys_addr_t end) -{ - if (kvm_stage2_has_pmd(kvm)) { - phys_addr_t boundary = (addr + S2_PMD_SIZE) & S2_PMD_MASK; - - return (boundary - 1 < end - 1) ? boundary : end; - } else { - return end; - } -} - -static inline bool stage2_pte_table_empty(struct kvm *kvm, pte_t *ptep) -{ - return kvm_page_empty(ptep); -} - -static inline unsigned long stage2_pgd_index(struct kvm *kvm, phys_addr_t addr) -{ - return (((addr) >> stage2_pgdir_shift(kvm)) & (stage2_pgd_ptrs(kvm) - 1)); -} - -static inline phys_addr_t -stage2_pgd_addr_end(struct kvm *kvm, phys_addr_t addr, phys_addr_t end) -{ - phys_addr_t boundary = (addr + stage2_pgdir_size(kvm)) & stage2_pgdir_mask(kvm); - - return (boundary - 1 < end - 1) ? boundary : end; -} +#define kvm_mmu_cache_min_pages(mmu) (kvm_stage2_levels(mmu) - 1) #endif /* __ARM64_S2_PGTABLE_H_ */ |