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add pte_is_dirty()

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NAKAMURA Gou
2014-06-23 18:28:54 +09:00
parent d2e29bf598
commit c395dc2410
1 changed files with 15 additions and 0 deletions
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15
arch/x86/kernel/include/arch-memory.h
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@ -138,6 +138,21 @@ static inline int pte_is_writable(pte_t *ptep)
return !!(*ptep & PF_WRITABLE);
}
static inline int pte_is_dirty(pte_t *ptep, size_t pgsize)
{
switch (pgsize) {
case PTL1_SIZE: return !!(*ptep & PFL1_DIRTY);
case PTL2_SIZE: return !!(*ptep & PFL2_DIRTY);
case PTL3_SIZE: return !!(*ptep & PFL3_DIRTY);
default:
#if 0 /* XXX: workaround. cannot use panic() here */
panic("pte_is_dirty");
#else
return !!(*ptep & PTATTR_DIRTY);
#endif
}
}
static inline uintptr_t pte_get_phys(pte_t *ptep)
{
return (*ptep & PT_PHYSMASK);