Commit eb2606bb authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Heiko Carstens
Browse files

s390: Implement ARCH_HAS_CC_CAN_LINK 



The generic CC_CAN_LINK detection relies on -m32/-m64 compiler flags.
Some s390 toolchains use -m31 instead but that is not supported in the
kernel.

Make the logic easier to understand and allow the simplification of the
generic CC_CAN_LINK by using a tailored implementation.

Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 71f9bc6f

arch/s390/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ config S390 
	select ARCH_ENABLE_MEMORY_HOTREMOVE

	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2

	select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE

	select ARCH_HAS_CC_CAN_LINK

	select ARCH_HAS_CPU_FINALIZE_INIT

	select ARCH_HAS_CURRENT_STACK_POINTER

	select ARCH_HAS_DEBUG_VIRTUAL
@@ -294,6 +295,14 @@ config PGTABLE_LEVELS 


source "kernel/livepatch/Kconfig"



config ARCH_CC_CAN_LINK

	bool

	default $(cc_can_link_user,-m64)



config ARCH_USERFLAGS

	string

	default "-m64"



config ARCH_SUPPORTS_KEXEC

	def_bool y