The HW Change-bit override (0x100) is used now for s390x. This patch allows
page table entries that have set this bit.
Signed-off-by: Michael Holzheu <holzheu at linux.vnet.ibm.com>
---
arch/s390x.c | 4 ++--
makedumpfile.h | 1 -
2 files changed, 2 insertions(+), 3 deletions(-)
--- a/arch/s390x.c
+++ b/arch/s390x.c
@@ -195,10 +195,10 @@ static ulong _kl_pg_table_deref_s390x(un
readmem(VADDR, table + offset, &entry, sizeof(entry));
/*
* Check if the page table entry could be read and doesn't have
- * any of the reserved bits set.
+ * the reserved bit set.
* Check if the page table entry has the invalid bit set.
*/
- if (entry & (_PAGE_CO | _PAGE_ZERO | _PAGE_INVALID)) {
+ if (entry & (_PAGE_ZERO | _PAGE_INVALID)) {
ERRMSG("Invalid page table entry.\n");
return 0;
}
--- a/makedumpfile.h
+++ b/makedumpfile.h
@@ -575,7 +575,6 @@ do { \
#define _SEGMENT_INDEX_SHIFT 20
/* Hardware bits in the page table entry */
-#define _PAGE_CO 0x100 /* HW Change-bit override */
#define _PAGE_ZERO 0x800 /* Bit pos 52 must conatin zero */
#define _PAGE_INVALID 0x400 /* HW invalid bit */
#define _PAGE_INDEX_SHIFT 12
