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-rw-r--r--arch/s390/Kconfig14
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 318fce77601d..7fd08755a1f9 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -26,6 +26,10 @@ config GENERIC_BUG
config GENERIC_BUG_RELATIVE_POINTERS
def_bool y
+config GENERIC_CSUM
+ bool
+ default y if KASAN
+
config GENERIC_LOCKBREAK
def_bool y if PREEMPTION
@@ -73,6 +77,7 @@ config S390
select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_KCOV
select ARCH_HAS_MEM_ENCRYPT
+ select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SCALED_CPUTIME
select ARCH_HAS_SET_MEMORY
@@ -121,6 +126,7 @@ config S390
select ARCH_WANTS_NO_INSTR
select ARCH_WANT_DEFAULT_BPF_JIT
select ARCH_WANT_IPC_PARSE_VERSION
+ select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
select BUILDTIME_TABLE_SORT
select CLONE_BACKWARDS2
select DMA_OPS if PCI
@@ -196,6 +202,7 @@ config S390
select HAVE_RSEQ
select HAVE_SAMPLE_FTRACE_DIRECT
select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
+ select HAVE_SETUP_PER_CPU_AREA
select HAVE_SOFTIRQ_ON_OWN_STACK
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_VIRT_CPU_ACCOUNTING
@@ -207,6 +214,7 @@ config S390
select MMU_GATHER_MERGE_VMAS
select MODULES_USE_ELF_RELA
select NEED_DMA_MAP_STATE if PCI
+ select NEED_PER_CPU_EMBED_FIRST_CHUNK
select NEED_SG_DMA_LENGTH if PCI
select OLD_SIGACTION
select OLD_SIGSUSPEND3
@@ -568,8 +576,7 @@ config EXPOLINE_FULL
endchoice
config RELOCATABLE
- bool "Build a relocatable kernel"
- default y
+ def_bool y
help
This builds a kernel image that retains relocation information
so it can be loaded at an arbitrary address.
@@ -578,10 +585,11 @@ config RELOCATABLE
bootup process.
The relocations make the kernel image about 15% larger (compressed
10%), but are discarded at runtime.
+ Note: this option exists only for documentation purposes, please do
+ not remove it.
config RANDOMIZE_BASE
bool "Randomize the address of the kernel image (KASLR)"
- depends on RELOCATABLE
default y
help
In support of Kernel Address Space Layout Randomization (KASLR),