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authorVineet Gupta <vgupta@synopsys.com>2015-03-05 17:06:31 +0530
committerVineet Gupta <vgupta@synopsys.com>2015-10-28 19:31:05 +0530
commit336e2136e1353db8e9e731c27381ee0735656a8a (patch)
treee386405627b5e1f68f04a1d4f854f3121b913d45 /arch/arc/include
parentd40846457fc23cd841a60fdc2786e08a8bedb35b (diff)
ARC: mm: preps ahead of HIGHMEM support
Before we plug in highmem support, some of code needs to be ready for it - copy_user_highpage() needs to be using the kmap_atomic API - mk_pte() can't assume page_address() - do_page_fault() can't assume VMALLOC_END is end of kernel vaddr space Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include')
-rw-r--r--arch/arc/include/asm/pgtable.h9
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index f7c7273cd537..bd771351a1d1 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -270,13 +270,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
(unsigned long)(((pte_val(x) - CONFIG_LINUX_LINK_BASE) >> \
PAGE_SHIFT)))
-#define mk_pte(page, pgprot) \
-({ \
- pte_t pte; \
- pte_val(pte) = __pa(page_address(page)) + pgprot_val(pgprot); \
- pte; \
-})
-
+#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)
#define pfn_pte(pfn, prot) (__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
#define __pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
@@ -360,7 +354,6 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
#define pgd_offset_fast(mm, addr) pgd_offset(mm, addr)
#endif
-extern void paging_init(void);
extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE);
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
pte_t *ptep);