Revert "fix REQ-37: remap_one_page: remove to check page size"

This reverts commit 6790126a23.

- reverted commit should remove a 'pgsize' check in remap_one_page()
  instead of a 'pgsize' check in pte_make_fileoff().
- In IA-32e, PTE format varies with page size. Therefore 'pgsize'
  parameter of pte_make_fileoff() is preferable.

arch/x86/kernel/include/arch-memory.h

@@ -242,13 +242,12 @@ static inline void pte_make_null(pte_t *ptep, size_t pgsize)
 }
 
 static inline void pte_make_fileoff(off_t off,
-		enum ihk_mc_pt_attribute ptattr, pte_t *ptep)
+		enum ihk_mc_pt_attribute ptattr, size_t pgsize, pte_t *ptep)
 {
 	uint64_t attr;
 
 	attr = ptattr & ~PAGE_MASK;
 
-#if 0
 	switch (pgsize) {
 	case PTL1_SIZE:	attr |= PFL1_FILEOFF;			break;
 	case PTL2_SIZE:	attr |= PFL2_FILEOFF | PFL2_SIZE;	break;
@@ -261,9 +260,6 @@ static inline void pte_make_fileoff(off_t off,
 #endif
 		break;
 	}
-#else
-	attr |= PFL1_FILEOFF;
-#endif
 	*ptep = (off & PAGE_MASK) | attr;
 }