diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 3f86fd217690..781a68c69c2f 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -46,13 +46,13 @@ static inline int is_exec_fault(void) * and we avoid _PAGE_SPECIAL and cache inhibited pte. We also only do that * on userspace PTEs */ -static inline int pte_looks_normal(pte_t pte) +static inline int pte_looks_normal(pte_t pte, unsigned long addr) { if (pte_present(pte) && !pte_special(pte)) { if (pte_ci(pte)) return 0; - if (pte_user(pte)) + if (!is_kernel_addr(addr)) return 1; } return 0; @@ -79,11 +79,11 @@ static struct folio *maybe_pte_to_folio(pte_t pte) * support falls into the same category. */ -static pte_t set_pte_filter_hash(pte_t pte) +static pte_t set_pte_filter_hash(pte_t pte, unsigned long addr) { pte = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS); - if (pte_looks_normal(pte) && !(cpu_has_feature(CPU_FTR_COHERENT_ICACHE) || - cpu_has_feature(CPU_FTR_NOEXECUTE))) { + if (pte_looks_normal(pte, addr) && !(cpu_has_feature(CPU_FTR_COHERENT_ICACHE) || + cpu_has_feature(CPU_FTR_NOEXECUTE))) { struct folio *folio = maybe_pte_to_folio(pte); if (!folio) return pte; @@ -97,7 +97,7 @@ static pte_t set_pte_filter_hash(pte_t pte) #else /* CONFIG_PPC_BOOK3S */ -static pte_t set_pte_filter_hash(pte_t pte) { return pte; } +static pte_t set_pte_filter_hash(pte_t pte, unsigned long addr) { return pte; } #endif /* CONFIG_PPC_BOOK3S */ @@ -105,7 +105,7 @@ static pte_t set_pte_filter_hash(pte_t pte) { return pte; } * as we don't have two bits to spare for _PAGE_EXEC and _PAGE_HWEXEC so * instead we "filter out" the exec permission for non clean pages. */ -static inline pte_t set_pte_filter(pte_t pte) +static inline pte_t set_pte_filter(pte_t pte, unsigned long addr) { struct folio *folio; @@ -113,10 +113,10 @@ static inline pte_t set_pte_filter(pte_t pte) return pte; if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) - return set_pte_filter_hash(pte); + return set_pte_filter_hash(pte, addr); /* No exec permission in the first place, move on */ - if (!pte_exec(pte) || !pte_looks_normal(pte)) + if (!pte_exec(pte) || !pte_looks_normal(pte, addr)) return pte; /* If you set _PAGE_EXEC on weird pages you're on your own */ @@ -200,7 +200,7 @@ void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep, * this context might not have been activated yet when this * is called. */ - pte = set_pte_filter(pte); + pte = set_pte_filter(pte, addr); /* Perform the setting of the PTE */ arch_enter_lazy_mmu_mode(); @@ -301,7 +301,7 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_ */ VM_WARN_ON(pte_hw_valid(*ptep) && !pte_protnone(*ptep)); - pte = set_pte_filter(pte); + pte = set_pte_filter(pte, addr); val = pte_val(pte); |