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Commit a8fcd8b1 authored by Alexander Graf's avatar Alexander Graf Committed by Will Deacon
Browse files

arm64: Enable CONFIG_COMPAT also for 64k page size 



With binutils 2.25 the default alignment for 32bit arm sections changed to
have everything 64k aligned. Armv7 binaries built with this binutils version
run successfully on an arm64 system.

Since effectively there is now the chance to run armv7 code on arm64 even
with 64k page size, it doesn't make sense to block people from enabling
CONFIG_COMPAT on those configurations.

Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 18ccb0ca

arch/arm64/Kconfig

+5 −1
Original line number Diff line number Diff line
@@ -674,7 +674,7 @@ source "fs/Kconfig.binfmt" 


config COMPAT

	bool "Kernel support for 32-bit EL0"

	depends on !ARM64_64K_PAGES

	depends on !ARM64_64K_PAGES || EXPERT

	select COMPAT_BINFMT_ELF

	select HAVE_UID16

	select OLD_SIGSUSPEND3
@@ -685,6 +685,10 @@ config COMPAT 
	  the user helper functions, VFP support and the ptrace interface are

	  handled appropriately by the kernel.



	  If you also enabled CONFIG_ARM64_64K_PAGES, please be aware that you

	  will only be able to execute AArch32 binaries that were compiled with

	  64k aligned segments.



	  If you want to execute 32-bit userspace applications, say Y.



config SYSVIPC_COMPAT