The patch titled
Subject: mm: define default PGTABLE_LEVELS to two
has been removed from the -mm tree. Its filename was
mm-define-default-pgtable_levels-to-two.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: mm: define default PGTABLE_LEVELS to two
By this time all architectures which support more than two page table
levels should be covered. This patch add default definiton of
PGTABLE_LEVELS equal 2.
We also add assert to detect inconsistence between CONFIG_PGTABLE_LEVELS
and __PAGETABLE_PMD_FOLDED/__PAGETABLE_PUD_FOLDED.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jeff Dike <jdike@xxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Koichi Yasutake <yasutake.koichi@xxxxxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/Kconfig | 4 ++++
include/asm-generic/pgtable.h | 5 +++++
2 files changed, 9 insertions(+)
diff -puN arch/Kconfig~mm-define-default-pgtable_levels-to-two arch/Kconfig
--- a/arch/Kconfig~mm-define-default-pgtable_levels-to-two
+++ a/arch/Kconfig
@@ -484,6 +484,10 @@ config HAVE_IRQ_EXIT_ON_IRQ_STACK
This spares a stack switch and improves cache usage on softirq
processing.
+config PGTABLE_LEVELS
+ int
+ default 2
+
#
# ABI hall of shame
#
diff -puN include/asm-generic/pgtable.h~mm-define-default-pgtable_levels-to-two include/asm-generic/pgtable.h
--- a/include/asm-generic/pgtable.h~mm-define-default-pgtable_levels-to-two
+++ a/include/asm-generic/pgtable.h
@@ -7,6 +7,11 @@
#include <linux/mm_types.h>
#include <linux/bug.h>
+#if 4 - defined(__PAGETABLE_PUD_FOLDED) - defined(__PAGETABLE_PMD_FOLDED) != \
+ CONFIG_PGTABLE_LEVELS
+#error CONFIG_PGTABLE_LEVELS is not consistent with __PAGETABLE_{PUD,PMD}_FOLDED
+#endif
+
/*
* On almost all architectures and configurations, 0 can be used as the
* upper ceiling to free_pgtables(): on many architectures it has the same
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
origin.patch
mm-consolidate-all-page-flags-helpers-in-linux-page-flagsh.patch
mm-avoid-tail-page-refcounting-on-non-thp-compound-pages.patch
mm-migrate-check-before-clear-pageswapcache.patch
mm-page-writeback-check-before-clear-pagereclaim.patch
page-flags-trivial-cleanup-for-pagetrans-helpers.patch
page-flags-introduce-page-flags-policies-wrt-compound-pages.patch
page-flags-define-pg_locked-behavior-on-compound-pages.patch
page-flags-define-behavior-of-fs-io-related-flags-on-compound-pages.patch
page-flags-define-behavior-of-lru-related-flags-on-compound-pages.patch
page-flags-define-behavior-slb-related-flags-on-compound-pages.patch
page-flags-define-behavior-of-xen-related-flags-on-compound-pages.patch
page-flags-define-pg_reserved-behavior-on-compound-pages.patch
page-flags-define-pg_swapbacked-behavior-on-compound-pages.patch
page-flags-define-pg_swapcache-behavior-on-compound-pages.patch
page-flags-define-pg_mlocked-behavior-on-compound-pages.patch
page-flags-define-pg_uncached-behavior-on-compound-pages.patch
page-flags-define-pg_uptodate-behavior-on-compound-pages.patch
page-flags-look-on-head-page-if-the-flag-is-encoded-in-page-mapping.patch
mm-sanitize-page-mapping-for-tail-pages.patch
mm-sanitize-page-mapping-for-tail-pages-v2.patch
include-linux-page-flagsh-rename-macros-to-avoid-collisions.patch
thp-handle-errors-in-hugepage_init-properly.patch
thp-do-not-adjust-zone-water-marks-if-khugepaged-is-not-started.patch
mm-mmapc-use-while-instead-of-ifgoto.patch
mm-mmapc-use-while-instead-of-ifgoto-fix.patch
mm-uninline-and-cleanup-page-mapping-related-helpers.patch
mm-uninline-and-cleanup-page-mapping-related-helpers-checkpatch-fixes.patch
thp-cleanup-khugepaged-startup.patch
mmv41-new-pfn_mkwrite-same-as-page_mkwrite-for-vm_pfnmap.patch
dax-use-pfn_mkwrite-to-update-c-mtime-freeze-protection.patch
dax-unify-ext2-4_dax_file_operations.patch
linux-next.patch
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