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@xxxxxxx>
>> Cc: Will Deacon <will@xxxxxxxxxx>
>> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
>> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
>> Cc: Paul Mackerras <paulus@xxxxxxxxx>
>> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
>> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
>> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
>> Cc: x86@xxxxxxxxxx
>> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
>> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
>> Cc: linux-mm@xxxxxxxxx
>> Cc: linux-kernel@xxxxxxxxxxxxxxx
>> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> (arm64)
>> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
> 
> 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.