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Commit 4135f2a1 authored by Prasad Sodagudi's avatar Prasad Sodagudi
Browse files

arm64: Disable ARMv8.1, ARMv8.2 architectural features 



Some of the ARMv8.1, ARMv8.2 architectural features(ARM64_HW_AFDBM,
ARM64_PAN and ARM64_UAO) are enabled by default. Do not enable
these features by default, so that target specific defconfig
files can enable or disable based on features supported.

Change-Id: I072216927c3475169156a3d51f20d06675630ab9
Signed-off-by: default avatarPrasad Sodagudi <psodagud@codeaurora.org>
parent 4b373689

arch/arm64/Kconfig

+0 −3
Original line number Diff line number Diff line
@@ -806,7 +806,6 @@ menu "ARMv8.1 architectural features" 


config ARM64_HW_AFDBM

	bool "Support for hardware updates of the Access and Dirty page flags"

	default y

	help

	  The ARMv8.1 architecture extensions introduce support for

	  hardware updates of the access and dirty information in page
@@ -823,7 +822,6 @@ config ARM64_HW_AFDBM 


config ARM64_PAN

	bool "Enable support for Privileged Access Never (PAN)"

	default y

	help

	 Privileged Access Never (PAN; part of the ARMv8.1 Extensions)

	 prevents the kernel or hypervisor from accessing user-space (EL0)
@@ -851,7 +849,6 @@ endmenu 


config ARM64_UAO

	bool "Enable support for User Access Override (UAO)"

	default y

	help

	  User Access Override (UAO; part of the ARMv8.2 Extensions)

	  causes the 'unprivileged' variant of the load/store instructions to