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...@kvack.org
Acked-by: Ingo Molnar <mi...@kernel.org>
Acked-by: Balbir Singh <bsinghar...@gmail.com>
Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
---
Andew, the rest of the series should be going in via the ppc tree, but
since there's nothing ppc specific about this patch do you want to
take it via mm?
--
v2: Added 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 37a14d7a4e3f..569e39a8293d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -61,6 +61,7 @@ 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 5027cbc251f9..48b1af447fa7 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -668,12 +668,16 @@ 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,
--
2.9.4
