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Date: Thu, 13 Apr 2017 15:17:14 +1000 From: Oliver O'Halloran <oohall@...il.com> To: linux-kernel@...r.kernel.org Cc: Oliver O'Halloran <oohall@...il.com>, linux-mm@...ck.org Subject: [PATCH v2] 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@...ck.org Signed-off-by: Oliver O'Halloran <oohall@...il.com> --- v2: add missing hunk --- arch/x86/Kconfig | 1 + mm/Kconfig | 6 +++++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c43f47622440..535b4d514792 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -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 diff --git a/mm/Kconfig b/mm/Kconfig index c89f472b658c..392bf8d7574c 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -684,12 +684,16 @@ 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, -- 2.9.3
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