bool
default y
+config ARCH_MMAP_RND_BITS_MAX
+ # On Book3S 64, the default virtual address space for 64-bit processes
+ # is 2^47 (128TB). As a maximum, allow randomisation to consume up to
+ # 32T of address space (2^45), which should ensure a reasonable gap
+ # between bottom-up and top-down allocations for applications that
+ # consume "normal" amounts of address space. Book3S 64 only supports 64K
+ # and 4K page sizes.
+ default 29 if PPC_BOOK3S_64 && PPC_64K_PAGES # 29 = 45 (32T) - 16 (64K)
+ default 33 if PPC_BOOK3S_64 # 33 = 45 (32T) - 12 (4K)
+ #
+ # On all other 64-bit platforms (currently only Book3E), the virtual
+ # address space is 2^46 (64TB). Allow randomisation to consume up to 16T
+ # of address space (2^44). Only 4K page sizes are supported.
+ default 32 if 64BIT # 32 = 44 (16T) - 12 (4K)
+ #
+ # For 32-bit, use the compat values, as they're the same.
+ default ARCH_MMAP_RND_COMPAT_BITS_MAX
+
+config ARCH_MMAP_RND_BITS_MIN
+ # Allow randomisation to consume up to 1GB of address space (2^30).
+ default 14 if 64BIT && PPC_64K_PAGES # 14 = 30 (1GB) - 16 (64K)
+ default 18 if 64BIT # 18 = 30 (1GB) - 12 (4K)
+ #
+ # For 32-bit, use the compat values, as they're the same.
+ default ARCH_MMAP_RND_COMPAT_BITS_MIN
+
+config ARCH_MMAP_RND_COMPAT_BITS_MAX
+ # Total virtual address space for 32-bit processes is 2^31 (2GB).
+ # Allow randomisation to consume up to 512MB of address space (2^29).
+ default 11 if PPC_256K_PAGES # 11 = 29 (512MB) - 18 (256K)
+ default 13 if PPC_64K_PAGES # 13 = 29 (512MB) - 16 (64K)
+ default 15 if PPC_16K_PAGES # 15 = 29 (512MB) - 14 (16K)
+ default 17 # 17 = 29 (512MB) - 12 (4K)
+
+config ARCH_MMAP_RND_COMPAT_BITS_MIN
+ # Total virtual address space for 32-bit processes is 2^31 (2GB).
+ # Allow randomisation to consume up to 8MB of address space (2^23).
+ default 5 if PPC_256K_PAGES # 5 = 23 (8MB) - 18 (256K)
+ default 7 if PPC_64K_PAGES # 7 = 23 (8MB) - 16 (64K)
+ default 9 if PPC_16K_PAGES # 9 = 23 (8MB) - 14 (16K)
+ default 11 # 11 = 23 (8MB) - 12 (4K)
+
config HAVE_SETUP_PER_CPU_AREA
def_bool PPC64
/proc/interrupts. If you configure your system to have too few,
drivers will fail to load or worse - handle with care.
+config NMI_IPI
+ bool
+ depends on SMP && (DEBUGGER || KEXEC_CORE)
+ default y
+
config STACKTRACE_SUPPORT
bool
default y
config PPC
bool
default y
- select BUILDTIME_EXTABLE_SORT
+ #
+ # Please keep this list sorted alphabetically.
+ #
+ select ARCH_HAS_DEVMEM_IS_ALLOWED
+ select ARCH_HAS_DMA_SET_COHERENT_MASK
+ select ARCH_HAS_ELF_RANDOMIZE
+ select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
+ select ARCH_HAS_SG_CHAIN
+ select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
+ select ARCH_SUPPORTS_ATOMIC_RMW
+ select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
+ select ARCH_USE_BUILTIN_BSWAP
+ select ARCH_USE_CMPXCHG_LOCKREF if PPC64
+ select ARCH_WANT_IPC_PARSE_VERSION
select BINFMT_ELF
- select ARCH_HAS_ELF_RANDOMIZE
- select OF
- select OF_EARLY_FLATTREE
- select OF_RESERVED_MEM
- select HAVE_FTRACE_MCOUNT_RECORD
+ select BUILDTIME_EXTABLE_SORT
+ select CLONE_BACKWARDS
+ select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
+ select EDAC_ATOMIC_SCRUB
+ select EDAC_SUPPORT
+ select GENERIC_ATOMIC64 if PPC32
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_CLOCKEVENTS_BROADCAST if SMP
+ select GENERIC_CMOS_UPDATE
+ select GENERIC_CPU_AUTOPROBE
+ select GENERIC_IRQ_SHOW
+ select GENERIC_IRQ_SHOW_LEVEL
+ select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_STRNCPY_FROM_USER
+ select GENERIC_STRNLEN_USER
+ select GENERIC_TIME_VSYSCALL_OLD
+ select HAVE_ARCH_AUDITSYSCALL
+ select HAVE_ARCH_HARDENED_USERCOPY
+ select HAVE_ARCH_JUMP_LABEL
+ select HAVE_ARCH_KGDB
+ select HAVE_ARCH_MMAP_RND_BITS
+ select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
+ select HAVE_ARCH_SECCOMP_FILTER
+ select HAVE_ARCH_TRACEHOOK
+ select HAVE_CBPF_JIT if !PPC64
+ select HAVE_CONTEXT_TRACKING if PPC64
+ select HAVE_DEBUG_KMEMLEAK
+ select HAVE_DEBUG_STACKOVERFLOW
+ select HAVE_DMA_API_DEBUG
select HAVE_DYNAMIC_FTRACE
- select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
- select HAVE_FUNCTION_TRACER
+ select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
+ select HAVE_EBPF_JIT if PPC64
+ select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
+ select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER
- select SYSCTL_EXCEPTION_TRACE
- select VIRT_TO_BUS if !PPC64
+ select HAVE_FUNCTION_TRACER
+ select HAVE_GCC_PLUGINS
+ select HAVE_GENERIC_RCU_GUP
+ select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
select HAVE_IDE
select HAVE_IOREMAP_PROT
- select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
+ select HAVE_IRQ_EXIT_ON_IRQ_STACK
+ select HAVE_KERNEL_GZIP
select HAVE_KPROBES
- select HAVE_ARCH_KGDB
+ select HAVE_KPROBES_ON_FTRACE
select HAVE_KRETPROBES
- select HAVE_ARCH_TRACEHOOK
+ select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
- select HAVE_DMA_API_DEBUG
+ select HAVE_MOD_ARCH_SPECIFIC
+ select HAVE_NMI if PERF_EVENTS
select HAVE_OPROFILE
- select HAVE_DEBUG_KMEMLEAK
- select ARCH_HAS_SG_CHAIN
- select GENERIC_ATOMIC64 if PPC32
+ select HAVE_OPTPROBES if PPC64
select HAVE_PERF_EVENTS
+ select HAVE_PERF_EVENTS_NMI if PPC64
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
+ select HAVE_RCU_TABLE_FREE if SMP
select HAVE_REGS_AND_STACK_ACCESS_API
- select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
- select ARCH_WANT_IPC_PARSE_VERSION
- select SPARSE_IRQ
+ select HAVE_SYSCALL_TRACEPOINTS
+ select HAVE_VIRT_CPU_ACCOUNTING
select IRQ_DOMAIN
- select GENERIC_IRQ_SHOW
- select GENERIC_IRQ_SHOW_LEVEL
select IRQ_FORCED_THREADING
- select HAVE_RCU_TABLE_FREE if SMP
- select HAVE_SYSCALL_TRACEPOINTS
- select HAVE_CBPF_JIT if !PPC64
- select HAVE_EBPF_JIT if PPC64
- select HAVE_ARCH_JUMP_LABEL
- select ARCH_HAVE_NMI_SAFE_CMPXCHG
- select ARCH_HAS_GCOV_PROFILE_ALL
- select GENERIC_SMP_IDLE_THREAD
- select GENERIC_CMOS_UPDATE
- select GENERIC_TIME_VSYSCALL_OLD
- select GENERIC_CLOCKEVENTS
- select GENERIC_CLOCKEVENTS_BROADCAST if SMP
- select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
- select GENERIC_STRNCPY_FROM_USER
- select GENERIC_STRNLEN_USER
- select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
- select CLONE_BACKWARDS
- select ARCH_USE_BUILTIN_BSWAP
- select OLD_SIGSUSPEND
- select OLD_SIGACTION if PPC32
- select HAVE_DEBUG_STACKOVERFLOW
- select HAVE_IRQ_EXIT_ON_IRQ_STACK
- select ARCH_USE_CMPXCHG_LOCKREF if PPC64
- select HAVE_ARCH_AUDITSYSCALL
- select ARCH_SUPPORTS_ATOMIC_RMW
- select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
select NO_BOOTMEM
- select HAVE_GENERIC_RCU_GUP
- select HAVE_PERF_EVENTS_NMI if PPC64
- select HAVE_NMI if PERF_EVENTS
- select EDAC_SUPPORT
- select EDAC_ATOMIC_SCRUB
- select ARCH_HAS_DMA_SET_COHERENT_MASK
- select ARCH_HAS_DEVMEM_IS_ALLOWED
- select HAVE_ARCH_SECCOMP_FILTER
- select ARCH_HAS_UBSAN_SANITIZE_ALL
- select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
- select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
- select GENERIC_CPU_AUTOPROBE
- select HAVE_VIRT_CPU_ACCOUNTING
- select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
- select HAVE_ARCH_HARDENED_USERCOPY
- select HAVE_KERNEL_GZIP
+ select OF
+ select OF_EARLY_FLATTREE
+ select OF_RESERVED_MEM
+ select OLD_SIGACTION if PPC32
+ select OLD_SIGSUSPEND
+ select SPARSE_IRQ
+ select SYSCTL_EXCEPTION_TRACE
+ select VIRT_TO_BUS if !PPC64
+ #
+ # Please keep this list sorted alphabetically.
+ #
config GENERIC_CSUM
- def_bool CPU_LITTLE_ENDIAN
+ def_bool n
config EARLY_PRINTK
bool
be disabled also.
If you have a toolchain which supports mprofile-kernel, then you can
- enable this. Otherwise leave it disabled. If you're not sure, say
- "N".
+ disable this. Otherwise leave it enabled. If you're not sure, say
+ "Y".
config MPROFILE_KERNEL
depends on PPC64 && CPU_LITTLE_ENDIAN
config RELOCATABLE
bool "Build a relocatable kernel"
- depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
+ depends on PPC64 || (FLATMEM && (44x || FSL_BOOKE))
select NONSTATIC_KERNEL
select MODULE_REL_CRCS if MODVERSIONS
help
config CRASH_DUMP
bool "Build a kdump crash kernel"
depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
- select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
+ select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
help
Build a kernel suitable for use as a kdump capture kernel.
The same kernel binary can be used as production kernel and dump
config ARCH_SPARSEMEM_DEFAULT
def_bool y
- depends on (SMP && PPC_PSERIES) || PPC_PS3
+ depends on PPC_BOOK3S_64
config SYS_SUPPORTS_HUGETLBFS
bool
endchoice
+config THREAD_SHIFT
+ int "Thread shift" if EXPERT
+ range 13 15
+ default "15" if PPC_256K_PAGES
+ default "14" if PPC64
+ default "13"
+ help
+ Used to define the stack size. The default is almost always what you
+ want. Only change this if you know what you are doing.
+
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
range 8 9 if PPC64 && PPC_64K_PAGES
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