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Commit c172cc92 authored by Russell King's avatar Russell King Committed by Russell King
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[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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent b29e9f5e

arch/arm/mm/ioremap.c

+2 −1
Original line number Diff line number Diff line
@@ -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;

arch/arm/mm/mm.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

arch/arm/mm/mmu.c

+2 −1
Original line number Diff line number Diff line
@@ -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);

}