pte_update_phys(): update physical address of a PTE

2017-05-04 04:47:16 +09:00
parent 7a606baad4
commit 06f824c829
1 changed files with 5 additions and 0 deletions
--- a/arch/x86/kernel/include/arch-memory.h
+++ b/arch/x86/kernel/include/arch-memory.h
@ -204,6 +204,11 @@ static inline int pte_is_fileoff(pte_t *ptep, size_t pgsize)
 	}
 }

+static inline void pte_update_phys(pte_t *ptep, unsigned long phys)
+{
+	*ptep = (*ptep & ~PT_PHYSMASK) | (phys & PT_PHYSMASK);
+}
+
 static inline uintptr_t pte_get_phys(pte_t *ptep)
 {
 	return (*ptep & PT_PHYSMASK);