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

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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>
This commit is contained in:
Russell King
2007-04-21 10:52:32 +01:00
committed by Russell King
parent b29e9f5e64
commit c172cc92c8
3 changed files with 5 additions and 2 deletions
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3
arch/arm/mm/ioremap.c
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@@ -55,7 +55,8 @@ static int remap_area_pte(pmd_t *pmd, unsigned long addr, unsigned long end,
if (!pte_none(*pte)) if (!pte_none(*pte))
goto bad; 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; phys_addr += PAGE_SIZE;
} while (pte++, addr += PAGE_SIZE, addr != end); } while (pte++, addr += PAGE_SIZE, addr != end);
return 0; return 0;

1
arch/arm/mm/mm.h
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@@ -18,6 +18,7 @@ static inline pmd_t *pmd_off_k(unsigned long virt)
struct mem_type { struct mem_type {
unsigned int prot_pte; unsigned int prot_pte;
unsigned int prot_pte_ext;
unsigned int prot_l1; unsigned int prot_l1;
unsigned int prot_sect; unsigned int prot_sect;
unsigned int domain; unsigned int domain;

3
arch/arm/mm/mmu.c
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@@ -391,7 +391,8 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr,
pte = pte_offset_kernel(pmd, addr); pte = pte_offset_kernel(pmd, addr);
do { 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++; pfn++;
} while (pte++, addr += PAGE_SIZE, addr != end); } while (pte++, addr += PAGE_SIZE, addr != end);
} }