def_bool y
config ZONE_DMA
- def_bool y if 64BIT
+ def_bool y
config LOCKDEP_SUPPORT
def_bool y
select HAVE_DYNAMIC_FTRACE
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_REGS_AND_STACK_ACCESS_API
- select HAVE_DEFAULT_NO_SPIN_MUTEXES
select HAVE_OPROFILE
select HAVE_KPROBES
select HAVE_KRETPROBES
select INIT_ALL_POSSIBLE
select HAVE_IRQ_WORK
select HAVE_PERF_EVENTS
+ select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_LZMA
select HAVE_KERNEL_LZO
+ select HAVE_KERNEL_XZ
select HAVE_GET_USER_PAGES_FAST
select HAVE_ARCH_MUTEX_CPU_RELAX
+ select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
+ select ARCH_SAVE_PAGE_KEYS if HIBERNATION
select ARCH_INLINE_SPIN_TRYLOCK
select ARCH_INLINE_SPIN_TRYLOCK_BH
select ARCH_INLINE_SPIN_LOCK
config SYSVIPC_COMPAT
def_bool y if COMPAT && SYSVIPC
-config AUDIT_ARCH
- def_bool y
+config KEYS_COMPAT
+ def_bool y if COMPAT && KEYS
-config S390_EXEC_PROTECT
+config AUDIT_ARCH
def_bool y
- prompt "Data execute protection"
- help
- This option allows to enable a buffer overflow protection for user
- space programs and it also selects the addressing mode option above.
- The kernel parameter noexec=on will enable this feature and also
- switch the addressing modes, default is disabled. Enabling this (via
- kernel parameter) on machines earlier than IBM System z9 this will
- reduce system performance.
comment "Code generation options"
on older machines.
config MARCH_Z196
- bool "IBM zEnterprise 196"
+ bool "IBM zEnterprise 114 and 196"
help
- Select this to enable optimizations for IBM zEnterprise 196
- (2817 series). The kernel will be slightly faster but will not work
- on older machines.
+ Select this to enable optimizations for IBM zEnterprise 114 and 196
+ (2818 and 2817 series). The kernel will be slightly faster but will
+ not work on older machines.
endchoice
The minimum size for the stack guard should be 256 for 31 bit and
512 for 64 bit.
-config WARN_STACK
+config WARN_DYNAMIC_STACK
def_bool n
- prompt "Emit compiler warnings for function with broken stack usage"
+ prompt "Emit compiler warnings for function with dynamic stack usage"
help
- This option enables the compiler options -mwarn-framesize and
- -mwarn-dynamicstack. If the compiler supports these options it
- will generate warnings for function which either use alloca or
- create a stack frame bigger than CONFIG_WARN_STACK_SIZE.
+ This option enables the compiler option -mwarn-dynamicstack. If the
+ compiler supports this options generates warnings for functions
+ that dynamically allocate stack space using alloca.
Say N if you are unsure.
-config WARN_STACK_SIZE
- int "Maximum frame size considered safe (128-2048)"
- range 128 2048
- depends on WARN_STACK
- default "2048"
- help
- This allows you to specify the maximum frame size a function may
- have without the compiler complaining about it.
-
config ARCH_POPULATES_NODE_MAP
def_bool y
If unsure, say Y.
config CHSC_SCH
- def_tristate y
+ def_tristate m
prompt "Support for CHSC subchannels"
help
This driver allows usage of CHSC subchannels. A CHSC subchannel
current kernel, and to start another kernel. It is like a reboot
but is independent of hardware/microcode support.
+config CRASH_DUMP
+ bool "kernel crash dumps"
+ depends on 64BIT
+ select KEXEC
+ help
+ Generate crash dump after being started by kexec.
+ Crash dump kernels are loaded in the main kernel with kexec-tools
+ into a specially reserved region and then later executed after
+ a crash by kdump/kexec.
+ For more details see Documentation/kdump/kdump.txt
+
config ZFCPDUMP
def_bool n
prompt "zfcpdump support"
def_bool y
prompt "s390 guest support for KVM (EXPERIMENTAL)"
depends on 64BIT && EXPERIMENTAL
+ select VIRTUALIZATION
select VIRTIO
select VIRTIO_RING
select VIRTIO_CONSOLE