The patch titled
Subject: s390: expose number of page table levels
has been added to the -mm tree. Its filename is
s390-expose-number-of-page-table-levels.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/s390-expose-number-of-page-table-levels.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/s390-expose-number-of-page-table-levels.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: s390: expose number of page table levels
We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.
Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
table levels folded.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/s390/Kconfig | 5 +++++
arch/s390/include/asm/pgtable.h | 2 ++
2 files changed, 7 insertions(+)
diff -puN arch/s390/Kconfig~s390-expose-number-of-page-table-levels arch/s390/Kconfig
--- a/arch/s390/Kconfig~s390-expose-number-of-page-table-levels
+++ a/arch/s390/Kconfig
@@ -155,6 +155,11 @@ config S390
config SCHED_OMIT_FRAME_POINTER
def_bool y
+config PGTABLE_LEVELS
+ int
+ default 4 if 64BIT
+ default 2
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
diff -puN arch/s390/include/asm/pgtable.h~s390-expose-number-of-page-table-levels arch/s390/include/asm/pgtable.h
--- a/arch/s390/include/asm/pgtable.h~s390-expose-number-of-page-table-levels
+++ a/arch/s390/include/asm/pgtable.h
@@ -91,7 +91,9 @@ extern unsigned long zero_page_mask;
*/
#define PTRS_PER_PTE 256
#ifndef CONFIG_64BIT
+#define __PAGETABLE_PUD_FOLDED
#define PTRS_PER_PMD 1
+#define __PAGETABLE_PMD_FOLDED
#define PTRS_PER_PUD 1
#else /* CONFIG_64BIT */
#define PTRS_PER_PMD 2048
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
mm-rename-foll_mlock-to-foll_populate.patch
mm-rename-__mlock_vma_pages_range-to-populate_vma_page_range.patch
mm-move-gup-posix-mlock-error-conversion-out-of-__mm_populate.patch
mm-move-mm_populate-related-code-to-mm-gupc.patch
mm-incorporate-zero-pages-into-transparent-huge-pages.patch
mm-incorporate-zero-pages-into-transparent-huge-pages-fix.patch
alpha-expose-number-of-page-table-levels-on-kconfig-level.patch
arm64-expose-number-of-page-table-levels-on-kconfig-level.patch
arm-expose-number-of-page-table-levels-on-kconfig-level.patch
frv-mark-pud-and-pmd-folded.patch
ia64-expose-number-of-page-table-levels-on-kconfig-level.patch
m32r-mark-pmd-folded.patch
m68k-mark-pmd-folded-and-expose-number-of-page-table-levels.patch
mips-expose-number-of-page-table-levels-on-kconfig-level.patch
mn10300-mark-pud-and-pmd-folded.patch
parisc-expose-number-of-page-table-levels-on-kconfig-level.patch
powerpc-expose-number-of-page-table-levels-on-kconfig-level.patch
s390-expose-number-of-page-table-levels.patch
sh-expose-number-of-page-table-levels.patch
sparc-expose-number-of-page-table-levels.patch
tile-expose-number-of-page-table-levels.patch
um-expose-number-of-page-table-levels.patch
x86-expose-number-of-page-table-levels-on-kconfig-level.patch
mm-define-default-pgtable_levels-to-two.patch
mm-do-not-add-nr_pmds-into-mm_struct-if-pmd-is-folded.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
