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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-01-17 18:53:56 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-02-03 00:23:30 +0300
commit8762df4d5c5462bea8ad0f76473f39e9ce9b8662 (patch)
tree3c9d2d8727cf8e378fbc7288ba80496fbd8cee20 /arch/arm/mm
parent37bc618fe2689a7f8de8fac82e72b00ecea4d43d (diff)
downloadlinux-8762df4d5c5462bea8ad0f76473f39e9ce9b8662.tar.xz
ARM: v6k: use CPU domain feature if we include support for arch < ARMv6K
Rather than turning off CPU domain switching when the build architecture includes ARMv6K, thereby causing problems for ARMv6-supporting kernels, turn it on when it's required to support a CPU architecture. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Tested-by: Sourav Poddar <sourav.poddar@ti.com> Tested-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/Kconfig7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 22a3f4ad6ae5..29215f5f11b2 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -435,25 +435,30 @@ config CPU_32v3
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
+ select CPU_USE_DOMAINS if MMU
config CPU_32v4
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
+ select CPU_USE_DOMAINS if MMU
config CPU_32v4T
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
+ select CPU_USE_DOMAINS if MMU
config CPU_32v5
bool
select TLS_REG_EMUL if SMP || !MMU
select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
+ select CPU_USE_DOMAINS if MMU
config CPU_32v6
bool
select TLS_REG_EMUL if !CPU_32v6K && !MMU
+ select CPU_USE_DOMAINS if CPU_V6 && MMU
config CPU_32v6K
bool "Support ARM V6K processor extensions" if !SMP
@@ -620,8 +625,6 @@ config CPU_CP15_MPU
config CPU_USE_DOMAINS
bool
- depends on MMU
- default y if !CPU_32v6K
help
This option enables or disables the use of domain switching
via the set_fs() function.