[ARM] mm 6: allow mem_types table to specify extended pte attributes

Add prot_pte_ext to the mem_types table to allow the extended pte
attributes to be passed to set_pte_ext(), thereby permitting us to
specify memory type information for the hardware PTE entries.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index b26b361..216623e 100644 (file)
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -55,7 +55,8 @@ static int remap_area_pte(pmd_t *pmd, unsigned long addr, unsigned long end,
                if (!pte_none(*pte))
                        goto bad;
 
-               set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot), 0);
+               set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot),
+                           type->prot_pte_ext);
                phys_addr += PAGE_SIZE;
        } while (pte++, addr += PAGE_SIZE, addr != end);
        return 0;

diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 66f8612..7647c59 100644 (file)
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -18,6 +18,7 @@ static inline pmd_t *pmd_off_k(unsigned long virt)
 
 struct mem_type {
        unsigned int prot_pte;
+       unsigned int prot_pte_ext;
        unsigned int prot_l1;
        unsigned int prot_sect;
        unsigned int domain;

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 6cb80b4..3604055 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -391,7 +391,8 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr,
 
        pte = pte_offset_kernel(pmd, addr);
        do {
-               set_pte_ext(pte, pfn_pte(pfn, __pgprot(type->prot_pte)), 0);
+               set_pte_ext(pte, pfn_pte(pfn, __pgprot(type->prot_pte)),
+                           type->prot_pte_ext);
                pfn++;
        } while (pte++, addr += PAGE_SIZE, addr != end);
 }