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-rw-r--r--include/asm-s390/pgtable.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index f8347ce9c5a1..fd336f2e2a7a 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -234,6 +234,15 @@ extern char empty_zero_page[PAGE_SIZE];
234#define _PAGE_TYPE_EX_RW 0x002 234#define _PAGE_TYPE_EX_RW 0x002
235 235
236/* 236/*
237 * Only four types for huge pages, using the invalid bit and protection bit
238 * of a segment table entry.
239 */
240#define _HPAGE_TYPE_EMPTY 0x020 /* _SEGMENT_ENTRY_INV */
241#define _HPAGE_TYPE_NONE 0x220
242#define _HPAGE_TYPE_RO 0x200 /* _SEGMENT_ENTRY_RO */
243#define _HPAGE_TYPE_RW 0x000
244
245/*
237 * PTE type bits are rather complicated. handle_pte_fault uses pte_present, 246 * PTE type bits are rather complicated. handle_pte_fault uses pte_present,
238 * pte_none and pte_file to find out the pte type WITHOUT holding the page 247 * pte_none and pte_file to find out the pte type WITHOUT holding the page
239 * table lock. ptep_clear_flush on the other hand uses ptep_clear_flush to 248 * table lock. ptep_clear_flush on the other hand uses ptep_clear_flush to
@@ -325,6 +334,9 @@ extern char empty_zero_page[PAGE_SIZE];
325#define _SEGMENT_ENTRY (0) 334#define _SEGMENT_ENTRY (0)
326#define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV) 335#define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV)
327 336
337#define _SEGMENT_ENTRY_LARGE 0x400 /* STE-format control, large page */
338#define _SEGMENT_ENTRY_CO 0x100 /* change-recording override */
339
328#endif /* __s390x__ */ 340#endif /* __s390x__ */
329 341
330/* 342/*