diff options
-rw-r--r-- | arch/arm/include/asm/kvm_mmu.h | 4 | ||||
-rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 7 | ||||
-rw-r--r-- | virt/kvm/arm/mmu.c | 25 |
3 files changed, 32 insertions, 4 deletions
diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h index b2feaea1434c..265ea9cf7df7 100644 --- a/arch/arm/include/asm/kvm_mmu.h +++ b/arch/arm/include/asm/kvm_mmu.h @@ -75,6 +75,10 @@ phys_addr_t kvm_get_idmap_vector(void); int kvm_mmu_init(void); void kvm_clear_hyp_idmap(void); +#define kvm_mk_pmd(ptep) __pmd(__pa(ptep) | PMD_TYPE_TABLE) +#define kvm_mk_pud(pmdp) __pud(__pa(pmdp) | PMD_TYPE_TABLE) +#define kvm_mk_pgd(pudp) ({ BUILD_BUG(); 0; }) + static inline pte_t kvm_s2pte_mkwrite(pte_t pte) { pte_val(pte) |= L_PTE_S2_RDWR; diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index ea000fb47ec0..d6fff7de5539 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -169,6 +169,13 @@ phys_addr_t kvm_get_idmap_vector(void); int kvm_mmu_init(void); void kvm_clear_hyp_idmap(void); +#define kvm_mk_pmd(ptep) \ + __pmd(__phys_to_pmd_val(__pa(ptep)) | PMD_TYPE_TABLE) +#define kvm_mk_pud(pmdp) \ + __pud(__phys_to_pud_val(__pa(pmdp)) | PMD_TYPE_TABLE) +#define kvm_mk_pgd(pudp) \ + __pgd(__phys_to_pgd_val(__pa(pudp)) | PUD_TYPE_TABLE) + static inline pte_t kvm_s2pte_mkwrite(pte_t pte) { pte_val(pte) |= PTE_S2_RDWR; diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index a6bdbed1903a..eade30caaa3c 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -189,6 +189,23 @@ static inline void kvm_set_pmd(pmd_t *pmdp, pmd_t new_pmd) dsb(ishst); } +static inline void kvm_pmd_populate(pmd_t *pmdp, pte_t *ptep) +{ + kvm_set_pmd(pmdp, kvm_mk_pmd(ptep)); +} + +static inline void kvm_pud_populate(pud_t *pudp, pmd_t *pmdp) +{ + WRITE_ONCE(*pudp, kvm_mk_pud(pmdp)); + dsb(ishst); +} + +static inline void kvm_pgd_populate(pgd_t *pgdp, pud_t *pudp) +{ + WRITE_ONCE(*pgdp, kvm_mk_pgd(pudp)); + dsb(ishst); +} + /* * Unmapping vs dcache management: * @@ -617,7 +634,7 @@ static int create_hyp_pmd_mappings(pud_t *pud, unsigned long start, kvm_err("Cannot allocate Hyp pte\n"); return -ENOMEM; } - pmd_populate_kernel(NULL, pmd, pte); + kvm_pmd_populate(pmd, pte); get_page(virt_to_page(pmd)); kvm_flush_dcache_to_poc(pmd, sizeof(*pmd)); } @@ -650,7 +667,7 @@ static int create_hyp_pud_mappings(pgd_t *pgd, unsigned long start, kvm_err("Cannot allocate Hyp pmd\n"); return -ENOMEM; } - pud_populate(NULL, pud, pmd); + kvm_pud_populate(pud, pmd); get_page(virt_to_page(pud)); kvm_flush_dcache_to_poc(pud, sizeof(*pud)); } @@ -687,7 +704,7 @@ static int __create_hyp_mappings(pgd_t *pgdp, unsigned long ptrs_per_pgd, err = -ENOMEM; goto out; } - pgd_populate(NULL, pgd, pud); + kvm_pgd_populate(pgd, pud); get_page(virt_to_page(pgd)); kvm_flush_dcache_to_poc(pgd, sizeof(*pgd)); } @@ -1106,7 +1123,7 @@ static int stage2_set_pte(struct kvm *kvm, struct kvm_mmu_memory_cache *cache, if (!cache) return 0; /* ignore calls from kvm_set_spte_hva */ pte = mmu_memory_cache_alloc(cache); - pmd_populate_kernel(NULL, pmd, pte); + kvm_pmd_populate(pmd, pte); get_page(virt_to_page(pmd)); } |