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authorWill Deacon <will.deacon@arm.com>2013-01-09 14:29:33 +0000
committerWill Deacon <will.deacon@arm.com>2013-01-10 21:09:33 +0000
commit651134b01240aad44a0eed141e946d835aa93579 (patch)
tree9f14cd404e2b79903ea93d4837f7232c455cd041 /arch
parent4e3c1944808b0278ea4733afcde5cb9421f8a570 (diff)
ARM: virt: hide CONFIG_ARM_VIRT_EXT from user
ARM_VIRT_EXT is a property of CPU_V7, but does not adversely affect other CPUs that can be built into the same kernel image (i.e. ARMv6+). This patch defaults ARM_VIRT_EXT to y if CPU_V7, allowing hypervisors such as KVM to make better use of the option and being able to rely on hyp-mode boot support. Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/Kconfig10
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 3fd629d5a51..025d1732873 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -629,8 +629,9 @@ config ARM_THUMBEE
make use of it. Say N for code that can run on CPUs without ThumbEE.
config ARM_VIRT_EXT
- bool "Native support for the ARM Virtualization Extensions"
- depends on MMU && CPU_V7
+ bool
+ depends on MMU
+ default y if CPU_V7
help
Enable the kernel to make use of the ARM Virtualization
Extensions to install hypervisors without run-time firmware
@@ -640,11 +641,6 @@ config ARM_VIRT_EXT
use of this feature. Refer to Documentation/arm/Booting for
details.
- It is safe to enable this option even if the kernel may not be
- booted in HYP mode, may not have support for the
- virtualization extensions, or may be booted with a
- non-compliant bootloader.
-
config SWP_EMULATE
bool "Emulate SWP/SWPB instructions"
depends on !CPU_USE_DOMAINS && CPU_V7