linux-kernel - [PATCH v2 1/2] x86, arm64: Move ARCH_WANT_HUGE_PMD

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Message-Id: <20190409061449.5083-2-alex@ghiti.fr>
Date:   Tue,  9 Apr 2019 02:14:48 -0400
From:   Alexandre Ghiti <alex@...ti.fr>
To:     Christoph Hellwig <hch@...radead.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org
Cc:     Alexandre Ghiti <alex@...ti.fr>
Subject: [PATCH v2 1/2] x86, arm64: Move ARCH_WANT_HUGE_PMD_SHARE config in arch/Kconfig

ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
move this declaration in arch/Kconfig and make those architectures
select it.

Signed-off-by: Alexandre Ghiti <alex@...ti.fr>
---
 arch/Kconfig       | 3 +++
 arch/arm64/Kconfig | 2 +-
 arch/x86/Kconfig   | 4 +---
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index 8c858bb133c9..273cefc6b787 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -567,6 +567,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
 config HAVE_ARCH_HUGE_VMAP
 	bool
 
+config ARCH_WANT_HUGE_PMD_SHARE
+	bool
+
 config HAVE_ARCH_SOFT_DIRTY
 	bool
 
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 870ef86a64ed..8b7870974961 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -68,6 +68,7 @@ config ARM64
 	select ARCH_SUPPORTS_NUMA_BALANCING
 	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
 	select ARCH_WANT_FRAME_POINTERS
+	select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
 	select ARCH_HAS_UBSAN_SANITIZE_ALL
 	select ARM_AMBA
 	select ARM_ARCH_TIMER
@@ -885,7 +886,6 @@ config SYS_SUPPORTS_HUGETLBFS
 	def_bool y
 
 config ARCH_WANT_HUGE_PMD_SHARE
-	def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
 
 config ARCH_HAS_CACHE_LINE_SIZE
 	def_bool y
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0f2ab09da060..fd5fc2d288be 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -82,6 +82,7 @@ config X86
 	select ARCH_USE_QUEUED_SPINLOCKS
 	select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
 	select ARCH_WANTS_DYNAMIC_TASK_STRUCT
+	select ARCH_WANT_HUGE_PMD_SHARE
 	select ARCH_WANTS_THP_SWAP		if X86_64
 	select BUILDTIME_EXTABLE_SORT
 	select CLKEVT_I8253
@@ -298,9 +299,6 @@ config ARCH_HIBERNATION_POSSIBLE
 config ARCH_SUSPEND_POSSIBLE
 	def_bool y
 
-config ARCH_WANT_HUGE_PMD_SHARE
-	def_bool y
-
 config ARCH_WANT_GENERAL_HUGETLB
 	def_bool y
 
-- 
2.20.1