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Commit 65f7d049 authored by Oliver O'Halloran's avatar Oliver O'Halloran Committed by Michael Ellerman
Browse files

mm, x86: Add ARCH_HAS_ZONE_DEVICE to Kconfig 



Currently ZONE_DEVICE depends on X86_64 and this will get unwieldly as
new architectures (and platforms) get ZONE_DEVICE support. Move to an
arch selected Kconfig option to save us the trouble.

Cc: linux-mm@kvack.org
Acked-by: default avatarIngo Molnar <mingo@kernel.org>
Acked-by: default avatarBalbir Singh <bsingharora@gmail.com>
Signed-off-by: default avatarOliver O'Halloran <oohall@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 7a849a6c

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ config X86 
	select ARCH_HAS_STRICT_KERNEL_RWX

	select ARCH_HAS_STRICT_MODULE_RWX

	select ARCH_HAS_UBSAN_SANITIZE_ALL

	select ARCH_HAS_ZONE_DEVICE		if X86_64

	select ARCH_HAVE_NMI_SAFE_CMPXCHG

	select ARCH_MIGHT_HAVE_ACPI_PDC		if ACPI

	select ARCH_MIGHT_HAVE_PC_PARPORT

mm/Kconfig

+5 −1
Original line number Diff line number Diff line
@@ -683,12 +683,16 @@ config IDLE_PAGE_TRACKING 


	  See Documentation/vm/idle_page_tracking.txt for more details.



# arch_add_memory() comprehends device memory

config ARCH_HAS_ZONE_DEVICE

	bool



config ZONE_DEVICE

	bool "Device memory (pmem, etc...) hotplug support"

	depends on MEMORY_HOTPLUG

	depends on MEMORY_HOTREMOVE

	depends on SPARSEMEM_VMEMMAP

	depends on X86_64 #arch_add_memory() comprehends device memory

	depends on ARCH_HAS_ZONE_DEVICE



	help

	  Device memory hotplug support allows for establishing pmem,