提交 ee3caed3 编写于 作者: M Michael Ellerman

powerpc/mm: Use pte_raw() in pte_same()/pmd_same()

We can avoid doing endian conversions by using pte_raw() in pxx_same().
The swap of the constant (_PAGE_HPTEFLAGS) should be done at compile
time by the compiler.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
上级 5dc1ef85
...@@ -272,7 +272,7 @@ static inline pmd_t pmd_mknotpresent(pmd_t pmd) ...@@ -272,7 +272,7 @@ static inline pmd_t pmd_mknotpresent(pmd_t pmd)
#define __HAVE_ARCH_PMD_SAME #define __HAVE_ARCH_PMD_SAME
static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
{ {
return (((pmd_val(pmd_a) ^ pmd_val(pmd_b)) & ~_PAGE_HPTEFLAGS) == 0); return (((pmd_raw(pmd_a) ^ pmd_raw(pmd_b)) & ~cpu_to_be64(_PAGE_HPTEFLAGS)) == 0);
} }
static inline int __pmdp_test_and_clear_young(struct mm_struct *mm, static inline int __pmdp_test_and_clear_young(struct mm_struct *mm,
......
...@@ -372,7 +372,11 @@ static inline int pgd_bad(pgd_t pgd) ...@@ -372,7 +372,11 @@ static inline int pgd_bad(pgd_t pgd)
} }
#define __HAVE_ARCH_PTE_SAME #define __HAVE_ARCH_PTE_SAME
#define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HPTEFLAGS) == 0) static inline int pte_same(pte_t pte_a, pte_t pte_b)
{
return (((pte_raw(pte_a) ^ pte_raw(pte_b)) & ~cpu_to_be64(_PAGE_HPTEFLAGS)) == 0);
}
static inline unsigned long pgd_page_vaddr(pgd_t pgd) static inline unsigned long pgd_page_vaddr(pgd_t pgd)
{ {
return (unsigned long)__va(pgd_val(pgd) & ~PGD_MASKED_BITS); return (unsigned long)__va(pgd_val(pgd) & ~PGD_MASKED_BITS);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册