The patch titled
Subject: mm: introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE
has been added to the -mm tree. Its filename is
mm-introduce-have_arch_transparent_hugepage.patch
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------------------------------------------------------
From: Steve Capper <steve.capper@xxxxxxx>
Subject: mm: introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE
Different architectures have slightly different pre-requisites for
supporting Transparent Huge Pages. To simplify the layout of mm/Kconfig,
a new option HAVE_ARCH_TRANSPARENT_HUGEPAGE is introduced and set in each
architecture's Kconfig file (at the moment x86, with ARM being set in a
future patch).
Signed-off-by: Steve Capper <steve.capper@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/Kconfig | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -puN arch/x86/Kconfig~mm-introduce-have_arch_transparent_hugepage arch/x86/Kconfig
--- a/arch/x86/Kconfig~mm-introduce-have_arch_transparent_hugepage
+++ a/arch/x86/Kconfig
@@ -83,7 +83,6 @@ config X86
select IRQ_FORCED_THREADING
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_BPF_JIT if X86_64
- select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select CLKEVT_I8253
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
@@ -1330,6 +1329,10 @@ config ILLEGAL_POINTER_VALUE
default 0 if X86_32
default 0xdead000000000000 if X86_64
+config HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ def_bool y
+ depends on MMU
+
source "mm/Kconfig"
config HIGHPTE
_
Patches currently in -mm which might be from steve.capper@xxxxxxx are
mm-thp-fix-the-pmd_clear-arguments-in-pmdp_get_and_clear.patch
mm-thp-fix-the-update_mmu_cache-last-argument-passing-in-mm-huge_memoryc.patch
mm-introduce-have_arch_transparent_hugepage.patch
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