[PATCH V2 0/6] mm: some config cleanups

[PATCH V2 0/6] mm: some config cleanups

[Anshuman Khandual]

This series contains config cleanup patches which reduces code duplication
across platforms and also improves maintainability. There is no functional
change intended with this series. This has been boot tested on arm64 but
only build tested on some other platforms.

This applies on 5.12-rc5

Changes in V2:

- Rebased on 5.12-rc5
- Added tags from previous version

Changes in V1:

https://lore.kernel.org/linux-arm-kernel/1615278790-18053-1-git-send-email-anshuman.khandual@arm.com/

Anshuman Khandual (6):
  mm: Generalize ARCH_HAS_CACHE_LINE_SIZE
  mm: Generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS)
  mm: Generalize ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE]
  mm: Drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION
  mm: Drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK
  mm: Drop redundant HAVE_ARCH_TRANSPARENT_HUGEPAGE

 arch/arc/Kconfig                       |  9 ++------
 arch/arm/Kconfig                       | 10 ++-------
 arch/arm64/Kconfig                     | 30 ++++++--------------------
 arch/ia64/Kconfig                      |  8 ++-----
 arch/mips/Kconfig                      |  6 +-----
 arch/parisc/Kconfig                    |  5 +----
 arch/powerpc/Kconfig                   | 11 ++--------
 arch/powerpc/platforms/Kconfig.cputype | 16 +++++---------
 arch/riscv/Kconfig                     |  5 +----
 arch/s390/Kconfig                      | 12 +++--------
 arch/sh/Kconfig                        |  7 +++---
 arch/sh/mm/Kconfig                     |  8 -------
 arch/x86/Kconfig                       | 29 ++++++-------------------
 fs/Kconfig                             |  5 ++++-
 mm/Kconfig                             |  9 ++++++++
 15 files changed, 48 insertions(+), 122 deletions(-)

-- 
2.20.1

[PATCH V2 3/6] mm: Generalize ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE]

[Anshuman Khandual]

ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE] configs have duplicate definitions
on platforms that subscribe them. Instead, just make them generic options
which can be selected on applicable platforms.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-ia64@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64)
Acked-by: Heiko Carstens <hca@linux.ibm.com> (s390)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/Kconfig   |  8 ++------
 arch/ia64/Kconfig    |  8 ++------
 arch/powerpc/Kconfig |  8 ++------
 arch/s390/Kconfig    |  8 ++------
 arch/sh/Kconfig      |  2 ++
 arch/sh/mm/Kconfig   |  8 --------
 arch/x86/Kconfig     | 10 ++--------
 mm/Kconfig           |  6 ++++++
 8 files changed, 18 insertions(+), 40 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index c86b28ef6ac0..48355c5519c3 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -11,6 +11,8 @@ config ARM64
 	select ACPI_PPTT if ACPI
 	select ARCH_HAS_DEBUG_WX
 	select ARCH_BINFMT_ELF_STATE
+	select ARCH_ENABLE_MEMORY_HOTPLUG
+	select ARCH_ENABLE_MEMORY_HOTREMOVE
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VIRTUAL
 	select ARCH_HAS_DEBUG_VM_PGTABLE
@@ -305,12 +307,6 @@ config ZONE_DMA32
 	bool "Support DMA32 zone" if EXPERT
 	default y
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-	def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-	def_bool y
-
 config SMP
 	def_bool y
 
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 2ad7a8d29fcc..96ce53ad5c9d 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -13,6 +13,8 @@ config IA64
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select ACPI
 	select ACPI_NUMA if NUMA
+	select ARCH_ENABLE_MEMORY_HOTPLUG
+	select ARCH_ENABLE_MEMORY_HOTREMOVE
 	select ARCH_SUPPORTS_ACPI
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
 	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
@@ -250,12 +252,6 @@ config HOTPLUG_CPU
 	  can be controlled through /sys/devices/system/cpu/cpu#.
 	  Say N if you want to disable CPU hotplug.
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-	def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-	def_bool y
-
 config SCHED_SMT
 	bool "SMT scheduler support"
 	depends on SMP
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a74c211e55b1..02a05a24659d 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -118,6 +118,8 @@ config PPC
 	# Please keep this list sorted alphabetically.
 	#
 	select ARCH_32BIT_OFF_T if PPC32
+	select ARCH_ENABLE_MEMORY_HOTPLUG
+	select ARCH_ENABLE_MEMORY_HOTREMOVE
 	select ARCH_HAS_DEBUG_VIRTUAL
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE
@@ -515,12 +517,6 @@ config ARCH_CPU_PROBE_RELEASE
 	def_bool y
 	depends on HOTPLUG_CPU
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-	def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-	def_bool y
-
 config PPC64_SUPPORTS_MEMORY_FAILURE
 	bool "Add support for memory hwpoison"
 	depends on PPC_BOOK3S_64
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index c1ff874e6c2e..f8b356550daa 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -60,6 +60,8 @@ config S390
 	imply IMA_SECURE_AND_OR_TRUSTED_BOOT
 	select ARCH_32BIT_USTAT_F_TINODE
 	select ARCH_BINFMT_ELF_STATE
+	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
+	select ARCH_ENABLE_MEMORY_HOTREMOVE
 	select ARCH_HAS_DEBUG_VM_PGTABLE
 	select ARCH_HAS_DEBUG_WX
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
@@ -626,12 +628,6 @@ config ARCH_SPARSEMEM_ENABLE
 config ARCH_SPARSEMEM_DEFAULT
 	def_bool y
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-	def_bool y if SPARSEMEM
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-	def_bool y
-
 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
 	def_bool y
 
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index a54b0c5de37b..68129537e350 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -2,6 +2,8 @@
 config SUPERH
 	def_bool y
 	select ARCH_32BIT_OFF_T
+	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
+	select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
 	select ARCH_HAVE_CUSTOM_GPIO_H
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
 	select ARCH_HAS_BINFMT_FLAT if !MMU
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 77aa2f802d8d..d551a9cac41e 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -136,14 +136,6 @@ config ARCH_SPARSEMEM_DEFAULT
 config ARCH_SELECT_MEMORY_MODEL
 	def_bool y
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-	def_bool y
-	depends on SPARSEMEM && MMU
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-	def_bool y
-	depends on SPARSEMEM && MMU
-
 config ARCH_MEMORY_PROBE
 	def_bool y
 	depends on MEMORY_HOTPLUG
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 51d171abb57a..503d8b2e8676 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -60,6 +60,8 @@ config X86
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI
 	select ARCH_32BIT_OFF_T			if X86_32
 	select ARCH_CLOCKSOURCE_INIT
+	select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
+	select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
 	select ARCH_HAS_ACPI_TABLE_UPGRADE	if ACPI
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VIRTUAL
@@ -2423,14 +2425,6 @@ config ARCH_HAS_ADD_PAGES
 	def_bool y
 	depends on X86_64 && ARCH_ENABLE_MEMORY_HOTPLUG
 
-config ARCH_ENABLE_MEMORY_HOTPLUG
-	def_bool y
-	depends on X86_64 || (X86_32 && HIGHMEM)
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-	def_bool y
-	depends on MEMORY_HOTPLUG
-
 config USE_PERCPU_NUMA_NODE_ID
 	def_bool y
 	depends on NUMA
diff --git a/mm/Kconfig b/mm/Kconfig
index 1c9a37fc651a..9b58fa08847d 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -149,6 +149,9 @@ config MEMORY_ISOLATION
 config HAVE_BOOTMEM_INFO_NODE
 	def_bool n
 
+config ARCH_ENABLE_MEMORY_HOTPLUG
+	bool
+
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
 	bool "Allow for memory hot-add"
@@ -177,6 +180,9 @@ config MEMORY_HOTPLUG_DEFAULT_ONLINE
 	  Say N here if you want the default policy to keep all hot-plugged
 	  memory blocks in 'offline' state.
 
+config ARCH_ENABLE_MEMORY_HOTREMOVE
+	bool
+
 config MEMORY_HOTREMOVE
 	bool "Allow for memory hot remove"
 	select HAVE_BOOTMEM_INFO_NODE if (X86_64 || PPC64)
-- 
2.20.1

[PATCH V2 4/6] mm: Drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION

[Anshuman Khandual]

ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION configs have duplicate definitions on
platforms that subscribe them. Drop these reduntant definitions and instead
just select them appropriately.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: x86@kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64)
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/Kconfig                     | 10 ++--------
 arch/powerpc/platforms/Kconfig.cputype |  5 +----
 arch/x86/Kconfig                       | 10 ++--------
 3 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 48355c5519c3..cd012af0a4b7 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -11,8 +11,10 @@ config ARM64
 	select ACPI_PPTT if ACPI
 	select ARCH_HAS_DEBUG_WX
 	select ARCH_BINFMT_ELF_STATE
+	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
 	select ARCH_ENABLE_MEMORY_HOTPLUG
 	select ARCH_ENABLE_MEMORY_HOTREMOVE
+	select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VIRTUAL
 	select ARCH_HAS_DEBUG_VM_PGTABLE
@@ -1905,14 +1907,6 @@ config SYSVIPC_COMPAT
 	def_bool y
 	depends on COMPAT && SYSVIPC
 
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
-	def_bool y
-	depends on HUGETLB_PAGE && MIGRATION
-
-config ARCH_ENABLE_THP_MIGRATION
-	def_bool y
-	depends on TRANSPARENT_HUGEPAGE
-
 menu "Power management options"
 
 source "kernel/power/Kconfig"
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index cec1017813f8..4465b71b2bff 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -96,6 +96,7 @@ config PPC_BOOK3S_64
 	select PPC_FPU
 	select PPC_HAVE_PMU_SUPPORT
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
 	select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
 	select ARCH_SUPPORTS_HUGETLBFS
 	select ARCH_SUPPORTS_NUMA_BALANCING
@@ -420,10 +421,6 @@ config PPC_PKEY
 	depends on PPC_BOOK3S_64
 	depends on PPC_MEM_KEYS || PPC_KUAP || PPC_KUEP
 
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
-	def_bool y
-	depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
-
 
 config PPC_MMU_NOHASH
 	def_bool y
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 503d8b2e8676..10702ef1eb57 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -60,8 +60,10 @@ config X86
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI
 	select ARCH_32BIT_OFF_T			if X86_32
 	select ARCH_CLOCKSOURCE_INIT
+	select ARCH_ENABLE_HUGEPAGE_MIGRATION if x86_64 && HUGETLB_PAGE && MIGRATION
 	select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
 	select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
+	select ARCH_ENABLE_THP_MIGRATION if x86_64 && TRANSPARENT_HUGEPAGE
 	select ARCH_HAS_ACPI_TABLE_UPGRADE	if ACPI
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VIRTUAL
@@ -2433,14 +2435,6 @@ config ARCH_ENABLE_SPLIT_PMD_PTLOCK
 	def_bool y
 	depends on X86_64 || X86_PAE
 
-config ARCH_ENABLE_HUGEPAGE_MIGRATION
-	def_bool y
-	depends on X86_64 && HUGETLB_PAGE && MIGRATION
-
-config ARCH_ENABLE_THP_MIGRATION
-	def_bool y
-	depends on X86_64 && TRANSPARENT_HUGEPAGE
-
 menu "Power management and ACPI options"
 
 config ARCH_HIBERNATION_HEADER
-- 
2.20.1

Re: [PATCH V2 4/6] mm: Drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION

[Oscar Salvador]

On Thu, Apr 01, 2021 at 12:14:06PM +0530, Anshuman Khandual wrote:
> ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION configs have duplicate definitions on
> platforms that subscribe them. Drop these reduntant definitions and instead
> just select them appropriately.
> 
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: x86@kernel.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linuxppc-dev@lists.ozlabs.org
> Cc: linux-mm@kvack.org
> Cc: linux-kernel@vger.kernel.org
> Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64)
> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>

Hi Anshuman, 

X86 needs fixing, see below:

> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 503d8b2e8676..10702ef1eb57 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -60,8 +60,10 @@ config X86
>  	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI
>  	select ARCH_32BIT_OFF_T			if X86_32
>  	select ARCH_CLOCKSOURCE_INIT
> +	select ARCH_ENABLE_HUGEPAGE_MIGRATION if x86_64 && HUGETLB_PAGE && MIGRATION
>  	select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
>  	select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
> +	select ARCH_ENABLE_THP_MIGRATION if x86_64 && TRANSPARENT_HUGEPAGE

you need s/x86_64/X86_64/, otherwise we are left with no migration :-)

-- 
Oscar Salvador
SUSE L3

Re: [PATCH V2 4/6] mm: Drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION

[Anshuman Khandual]

On 4/12/21 5:29 PM, Oscar Salvador wrote:
> On Thu, Apr 01, 2021 at 12:14:06PM +0530, Anshuman Khandual wrote:
>> ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION configs have duplicate definitions on
>> platforms that subscribe them. Drop these reduntant definitions and instead
>> just select them appropriately.
>>
>> Cc: Catalin Marinas <catalin.marinas@arm.com>
>> Cc: Will Deacon <will@kernel.org>
>> Cc: Michael Ellerman <mpe@ellerman.id.au>
>> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>> Cc: Paul Mackerras <paulus@samba.org>
>> Cc: Thomas Gleixner <tglx@linutronix.de>
>> Cc: Ingo Molnar <mingo@redhat.com>
>> Cc: "H. Peter Anvin" <hpa@zytor.com>
>> Cc: Andrew Morton <akpm@linux-foundation.org>
>> Cc: x86@kernel.org
>> Cc: linux-arm-kernel@lists.infradead.org
>> Cc: linuxppc-dev@lists.ozlabs.org
>> Cc: linux-mm@kvack.org
>> Cc: linux-kernel@vger.kernel.org
>> Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64)
>> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
> 
> Hi Anshuman, 
> 
> X86 needs fixing, see below:
> 
>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>> index 503d8b2e8676..10702ef1eb57 100644
>> --- a/arch/x86/Kconfig
>> +++ b/arch/x86/Kconfig
>> @@ -60,8 +60,10 @@ config X86
>>  	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI
>>  	select ARCH_32BIT_OFF_T			if X86_32
>>  	select ARCH_CLOCKSOURCE_INIT
>> +	select ARCH_ENABLE_HUGEPAGE_MIGRATION if x86_64 && HUGETLB_PAGE && MIGRATION
>>  	select ARCH_ENABLE_MEMORY_HOTPLUG if X86_64 || (X86_32 && HIGHMEM)
>>  	select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
>> +	select ARCH_ENABLE_THP_MIGRATION if x86_64 && TRANSPARENT_HUGEPAGE
> 
> you need s/x86_64/X86_64/, otherwise we are left with no migration :-)

Ahh, right. I guess this could not have got detected during a build test.
As the series is in mmotm tree, wondering if Andrew could help fix these
typos in this patch.

Re: [PATCH V2 1/6] mm: Generalize ARCH_HAS_CACHE_LINE_SIZE

[Vineet Gupta]

On 3/31/21 11:44 PM, Anshuman Khandual wrote:
> ARCH_HAS_CACHE_LINE_SIZE config has duplicate definitions on platforms that
> subscribe it. Instead, just make it a generic option which can be selected
> on applicable platforms. This change reduces code duplication and makes it
> cleaner.

Acked-by: Vineet Gupta <vgupta@synopsys.com>   #arc


Thx,
-Vineet

Re: [PATCH V2 6/6] mm: Drop redundant HAVE_ARCH_TRANSPARENT_HUGEPAGE

[Vineet Gupta]

On 3/31/21 11:44 PM, Anshuman Khandual wrote:
> HAVE_ARCH_TRANSPARENT_HUGEPAGE has duplicate definitions on platforms that
> subscribe it. Drop these reduntant definitions and instead just select it
> on applicable platforms.

Acked-by: Vineet Gupta <vgupta@synopsys.com>   #arc

Thx,
-Vineet