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arm64: Macros to check/set/unset the contiguous bit 

Add the supporting macros to check if the contiguous bit
is set, set the bit, or clear it in a PTE entry.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Jeremy Linton 2015-10-07 12:00:21 -05:00 committed by Catalin Marinas
parent ecf35a237a
commit 93ef666a09
1 changed files with 11 additions and 0 deletions
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11
arch/arm64/include/asm/pgtable.h
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@ -140,6 +140,7 @@ extern struct page *empty_zero_page;
#define pte_special(pte) (!!(pte_val(pte) & PTE_SPECIAL))
#define pte_write(pte) (!!(pte_val(pte) & PTE_WRITE))
#define pte_exec(pte) (!(pte_val(pte) & PTE_UXN))
#define pte_cont(pte) (!!(pte_val(pte) & PTE_CONT))
#ifdef CONFIG_ARM64_HW_AFDBM
#define pte_hw_dirty(pte) (pte_write(pte) && !(pte_val(pte) & PTE_RDONLY))
@ -202,6 +203,16 @@ static inline pte_t pte_mkspecial(pte_t pte)
return set_pte_bit(pte, __pgprot(PTE_SPECIAL));
}
static inline pte_t pte_mkcont(pte_t pte)
{
return set_pte_bit(pte, __pgprot(PTE_CONT));
}
static inline pte_t pte_mknoncont(pte_t pte)
{
return clear_pte_bit(pte, __pgprot(PTE_CONT));
}
static inline void set_pte(pte_t *ptep, pte_t pte)
{
*ptep = pte;