MIPS: Kconfig Add SYS_SUPPORTS_HUGETLBFS and enable it for some systems.
Add new kconfig variables SYS_SUPPORTS_HUGETLBFS and
CPU_SUPPORTS_HUGEPAGES. They are enabled for systems that are known
to support huge pages.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 96f05e5..cebebf1 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -853,6 +853,11 @@
config SYS_SUPPORTS_LITTLE_ENDIAN
bool
+config SYS_SUPPORTS_HUGETLBFS
+ bool
+ depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
+ default y
+
config IRQ_CPU
bool
@@ -1057,6 +1062,7 @@
select CPU_SUPPORTS_32BIT_KERNEL
select CPU_SUPPORTS_64BIT_KERNEL
select CPU_SUPPORTS_HIGHMEM
+ select CPU_SUPPORTS_HUGEPAGES
help
Choose this option to build a kernel for release 1 or later of the
MIPS64 architecture. Many modern embedded systems with a 64-bit
@@ -1076,6 +1082,7 @@
select CPU_SUPPORTS_32BIT_KERNEL
select CPU_SUPPORTS_64BIT_KERNEL
select CPU_SUPPORTS_HIGHMEM
+ select CPU_SUPPORTS_HUGEPAGES
help
Choose this option to build a kernel for release 2 or later of the
MIPS64 architecture. Many modern embedded systems with a 64-bit
@@ -1162,6 +1169,7 @@
select CPU_HAS_LLSC
select CPU_SUPPORTS_32BIT_KERNEL
select CPU_SUPPORTS_64BIT_KERNEL
+ select CPU_SUPPORTS_HUGEPAGES
help
NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
instruction set.
@@ -1247,6 +1255,7 @@
select WEAK_ORDERING
select WEAK_REORDERING_BEYOND_LLSC
select CPU_SUPPORTS_HIGHMEM
+ select CPU_SUPPORTS_HUGEPAGES
help
The Cavium Octeon processor is a highly integrated chip containing
many ethernet hardware widgets for networking tasks. The processor
@@ -1366,6 +1375,8 @@
bool
config CPU_SUPPORTS_64BIT_KERNEL
bool
+config CPU_SUPPORTS_HUGEPAGES
+ bool
#
# Set to y for ptrace access to watch registers.