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-rw-r--r--arch/sparc/include/asm/pgtable_64.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 22500c3be7a9..1599de730532 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -864,6 +864,9 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
#define pgd_present(pgd) (pgd_val(pgd) != 0U)
#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL)
+/* only used by the stubbed out hugetlb gup code, should never be called */
+#define pgd_page(pgd) NULL
+
static inline unsigned long pud_large(pud_t pud)
{
pte_t pte = __pte(pud_val(pud));
@@ -1075,6 +1078,46 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
}
#define io_remap_pfn_range io_remap_pfn_range
+static inline unsigned long untagged_addr(unsigned long start)
+{
+ if (adi_capable()) {
+ long addr = start;
+
+ /* If userspace has passed a versioned address, kernel
+ * will not find it in the VMAs since it does not store
+ * the version tags in the list of VMAs. Storing version
+ * tags in list of VMAs is impractical since they can be
+ * changed any time from userspace without dropping into
+ * kernel. Any address search in VMAs will be done with
+ * non-versioned addresses. Ensure the ADI version bits
+ * are dropped here by sign extending the last bit before
+ * ADI bits. IOMMU does not implement version tags.
+ */
+ return (addr << (long)adi_nbits()) >> (long)adi_nbits();
+ }
+
+ return start;
+}
+#define untagged_addr untagged_addr
+
+static inline bool pte_access_permitted(pte_t pte, bool write)
+{
+ u64 prot;
+
+ if (tlb_type == hypervisor) {
+ prot = _PAGE_PRESENT_4V | _PAGE_P_4V;
+ if (write)
+ prot |= _PAGE_WRITE_4V;
+ } else {
+ prot = _PAGE_PRESENT_4U | _PAGE_P_4U;
+ if (write)
+ prot |= _PAGE_WRITE_4U;
+ }
+
+ return (pte_val(pte) & (prot | _PAGE_SPECIAL)) == prot;
+}
+#define pte_access_permitted pte_access_permitted
+
#include <asm/tlbflush.h>
#include <asm-generic/pgtable.h>