Hello Michael,
On Fri, 16 Nov 2012 14:34:58 +0100
Michael Holzheu <holzheu at linux.vnet.ibm.com> wrote:
> 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>
Thanks for your work.
I will merge this patch into v1.5.2.
Thanks
Atsushi Kumagai
> ---
> 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
>
>
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