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| author | Will Deacon <will.deacon@arm.com> | 2013-01-09 15:29:33 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2013-01-10 22:09:33 +0100 |
| commit | 651134b01240aad44a0eed141e946d835aa93579 (patch) | |
| tree | 9f14cd404e2b79903ea93d4837f7232c455cd041 /arch/arm/mm/Kconfig | |
| parent | ARM: virt: use PSR_N_BIT for detecting boot CPU mode mismatch (diff) | |
| download | linux-651134b01240aad44a0eed141e946d835aa93579.tar.xz linux-651134b01240aad44a0eed141e946d835aa93579.zip | |
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/arm/mm/Kconfig')
| -rw-r--r-- | arch/arm/mm/Kconfig | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 3fd629d5a513..025d17328730 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 |