Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
authored by
Thomas Weißschuh
and committed by
Heiko Carstens
eb2606bb
71f9bc6f
+9
+9
arch/s390/Kconfig
+9
arch/s390/Kconfig
···
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select ARCH_ENABLE_MEMORY_HOTREMOVE
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select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
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select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
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+
select ARCH_HAS_CC_CAN_LINK
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select ARCH_HAS_CPU_FINALIZE_INIT
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select ARCH_HAS_CURRENT_STACK_POINTER
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select ARCH_HAS_DEBUG_VIRTUAL
···
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default 5
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source "kernel/livepatch/Kconfig"
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+
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config ARCH_CC_CAN_LINK
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bool
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default $(cc_can_link_user,-m64)
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+
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config ARCH_USERFLAGS
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string
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default "-m64"
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config ARCH_SUPPORTS_KEXEC
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def_bool y