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Commit 651134b0 authored by Will Deacon's avatar Will Deacon
Browse files

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: default avatarWill Deacon <will.deacon@arm.com>
parent 4e3c1944

arch/arm/mm/Kconfig

+3 −7
Original line number Diff line number Diff line
@@ -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