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-rw-r--r--arch/arc/Kconfig15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 12d0284a46e5..a8767430df7d 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -35,8 +35,10 @@ config ARC
select NO_BOOTMEM
select OF
select OF_EARLY_FLATTREE
+ select OF_RESERVED_MEM
select PERF_USE_VMALLOC
select HAVE_DEBUG_STACKOVERFLOW
+ select HAVE_GENERIC_DMA_COHERENT
config MIGHT_HAVE_PCI
bool
@@ -56,6 +58,9 @@ config GENERIC_CSUM
config RWSEM_GENERIC_SPINLOCK
def_bool y
+config ARCH_DISCONTIGMEM_ENABLE
+ def_bool y
+
config ARCH_FLATMEM_ENABLE
def_bool y
@@ -345,6 +350,15 @@ config ARC_HUGEPAGE_16M
endchoice
+config NODES_SHIFT
+ int "Maximum NUMA Nodes (as a power of 2)"
+ default "1" if !DISCONTIGMEM
+ default "2" if DISCONTIGMEM
+ depends on NEED_MULTIPLE_NODES
+ ---help---
+ Accessing memory beyond 1GB (with or w/o PAE) requires 2 memory
+ zones.
+
if ISA_ARCOMPACT
config ARC_COMPACT_IRQ_LEVELS
@@ -453,6 +467,7 @@ config LINUX_LINK_BASE
config HIGHMEM
bool "High Memory Support"
+ select DISCONTIGMEM
help
With ARC 2G:2G address split, only upper 2G is directly addressable by
kernel. Enable this to potentially allow access to rest of 2G and PAE