diff options
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 515 |
1 files changed, 311 insertions, 204 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index d01e3401581d..9537a61ebae0 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -1,6 +1,20 @@ # SPDX-License-Identifier: GPL-2.0 source "arch/powerpc/platforms/Kconfig.cputype" +config CC_HAS_ELFV2 + def_bool PPC64 && $(cc-option, -mabi=elfv2) + +config CC_HAS_PREFIXED + def_bool PPC64 && $(cc-option, -mcpu=power10 -mprefixed) + +config CC_HAS_PCREL + # Clang has a bug (https://github.com/llvm/llvm-project/issues/62372) + # where pcrel code is not generated if -msoft-float, -mno-altivec, or + # -mno-vsx options are also given. Without these options, fp/vec + # instructions are generated from regular kernel code. So Clang can't + # do pcrel yet. + def_bool PPC64 && CC_IS_GCC && $(cc-option, -mcpu=power10 -mpcrel) + config 32BIT bool default y if PPC32 @@ -9,6 +23,10 @@ config 64BIT bool default y if PPC64 +config LIVEPATCH_64 + def_bool PPC64 + depends on LIVEPATCH + config MMU bool default y @@ -55,15 +73,6 @@ config ARCH_MMAP_RND_COMPAT_BITS_MIN 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 - -config NEED_PER_CPU_EMBED_FIRST_CHUNK - def_bool y if PPC64 - -config NEED_PER_CPU_PAGE_FIRST_CHUNK - def_bool y if PPC64 - config NR_IRQS int "Number of virtual interrupt numbers" range 32 1048576 @@ -81,8 +90,7 @@ config NMI_IPI config PPC_WATCHDOG bool - depends on HARDLOCKUP_DETECTOR - depends on HAVE_HARDLOCKUP_DETECTOR_ARCH + depends on HARDLOCKUP_DETECTOR_ARCH default y help This is a placeholder when the powerpc hardlockup detector @@ -94,10 +102,6 @@ config STACKTRACE_SUPPORT bool default y -config TRACE_IRQFLAGS_SUPPORT - bool - default y - config LOCKDEP_SUPPORT bool default y @@ -105,7 +109,7 @@ config LOCKDEP_SUPPORT config GENERIC_LOCKBREAK bool default y - depends on SMP && PREEMPTION + depends on SMP && PREEMPTION && !PPC_QUEUED_SPINLOCKS config GENERIC_HWEIGHT bool @@ -118,60 +122,82 @@ config PPC # Please keep this list sorted alphabetically. # select ARCH_32BIT_OFF_T if PPC32 + select ARCH_NEEDS_DEFER_KASAN if PPC_RADIX_MMU + select ARCH_DISABLE_KASAN_INLINE if PPC_RADIX_MMU + select ARCH_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE select ARCH_ENABLE_MEMORY_HOTPLUG select ARCH_ENABLE_MEMORY_HOTREMOVE select ARCH_HAS_COPY_MC if PPC64 + select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEBUG_VM_PGTABLE + select ARCH_HAS_DEBUG_WX if STRICT_KERNEL_RWX select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_DMA_MAP_DIRECT if PPC_PSERIES - select ARCH_HAS_ELF_RANDOMIZE + select ARCH_HAS_DMA_OPS if PPC64 select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL - select ARCH_HAS_HUGEPD if HUGETLB_PAGE + select ARCH_HAS_GIGANTIC_PAGE if ARCH_SUPPORTS_HUGETLBFS select ARCH_HAS_KCOV + select ARCH_HAS_KERNEL_FPU_SUPPORT if PPC64 && PPC_FPU select ARCH_HAS_MEMBARRIER_CALLBACKS select ARCH_HAS_MEMBARRIER_SYNC_CORE - select ARCH_HAS_MEMREMAP_COMPAT_ALIGN + select ARCH_HAS_MEMREMAP_COMPAT_ALIGN if PPC_64S_HASH_MMU select ARCH_HAS_MMIOWB if PPC64 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_PMEM_API - select ARCH_HAS_PTE_DEVMAP if PPC_BOOK3S_64 + select ARCH_HAS_PREEMPT_LAZY + select ARCH_HAS_PTDUMP select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 select ARCH_HAS_SET_MEMORY - select ARCH_HAS_STRICT_KERNEL_RWX if ((PPC_BOOK3S_64 || PPC32) && !HIBERNATION) - select ARCH_HAS_STRICT_MODULE_RWX if ARCH_HAS_STRICT_KERNEL_RWX && !PPC_BOOK3S_32 + select ARCH_HAS_STRICT_KERNEL_RWX if (PPC_BOOK3S || PPC_8xx) && !HIBERNATION + select ARCH_HAS_STRICT_KERNEL_RWX if PPC_85xx && !HIBERNATION && !RANDOMIZE_BASE + select ARCH_HAS_STRICT_MODULE_RWX if ARCH_HAS_STRICT_KERNEL_RWX + select ARCH_HAS_SYSCALL_WRAPPER if !SPU_BASE && !COMPAT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_UACCESS_FLUSHCACHE - select ARCH_HAS_UBSAN_SANITIZE_ALL + select ARCH_HAS_UBSAN + select ARCH_HAS_VDSO_ARCH_DATA select ARCH_HAVE_NMI_SAFE_CMPXCHG + select ARCH_HAVE_EXTRA_ELF_NOTES if SPU_BASE select ARCH_KEEP_MEMBLOCK + select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE if PPC_RADIX_MMU select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX + select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT + select ARCH_SPLIT_ARG64 if PPC32 select ARCH_STACKWALK select ARCH_SUPPORTS_ATOMIC_RMW - select ARCH_SUPPORTS_DEBUG_PAGEALLOC if PPC32 || PPC_BOOK3S_64 + select ARCH_SUPPORTS_DEBUG_PAGEALLOC if PPC_BOOK3S || PPC_8xx + select ARCH_SUPPORTS_SCHED_MC if SMP + select ARCH_SUPPORTS_SCHED_SMT if PPC64 && SMP + select SCHED_MC if ARCH_SUPPORTS_SCHED_MC select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF if PPC64 select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS if PPC_QUEUED_SPINLOCKS - select ARCH_USE_QUEUED_SPINLOCKS if PPC_QUEUED_SPINLOCKS + select ARCH_WANT_DEFAULT_BPF_JIT + select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_IRQS_OFF_ACTIVATE_MM select ARCH_WANT_LD_ORPHAN_WARN + select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP if PPC_RADIX_MMU + select ARCH_WANTS_MODULES_DATA_IN_VMALLOC if PPC_BOOK3S_32 || PPC_8xx select ARCH_WEAK_RELEASE_ACQUIRE select BINFMT_ELF select BUILDTIME_TABLE_SORT select CLONE_BACKWARDS + select CPUMASK_OFFSTACK if NR_CPUS >= 8192 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN select DMA_OPS_BYPASS if PPC64 - select DMA_OPS if PPC64 select DYNAMIC_FTRACE if FUNCTION_TRACER select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if ARCH_USING_PATCHABLE_FUNCTION_ENTRY + select FUNCTION_ALIGNMENT_4B select GENERIC_ATOMIC64 if PPC32 select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_CMOS_UPDATE @@ -179,22 +205,27 @@ config PPC select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC select GENERIC_EARLY_IOREMAP select GENERIC_GETTIMEOFDAY + select GENERIC_IDLE_POLL_SETUP + select GENERIC_IOREMAP select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL select GENERIC_PCI_IOMAP if PCI select GENERIC_SMP_IDLE_THREAD - select GENERIC_STRNCPY_FROM_USER - select GENERIC_STRNLEN_USER select GENERIC_TIME_VSYSCALL - select GENERIC_VDSO_TIME_NS + select HAS_IOPORT if PCI select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP select HAVE_ARCH_HUGE_VMAP if PPC_RADIX_MMU || PPC_8xx select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE - select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14 - select HAVE_ARCH_KASAN_VMALLOC if PPC32 && PPC_PAGE_SHIFT <= 14 - select HAVE_ARCH_KFENCE if PPC32 + select HAVE_ARCH_KASAN if PPC32 && PAGE_SHIFT <= 14 + select HAVE_ARCH_KASAN if PPC_RADIX_MMU + select HAVE_ARCH_KASAN if PPC_BOOK3E_64 + select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN + select HAVE_ARCH_KCSAN + select HAVE_ARCH_KFENCE if ARCH_SUPPORTS_DEBUG_PAGEALLOC + select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET + select HAVE_ARCH_WITHIN_STACK_FRAMES select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT @@ -202,27 +233,32 @@ config PPC select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_ASM_MODVERSIONS - select HAVE_CONTEXT_TRACKING if PPC64 + select HAVE_CONTEXT_TRACKING_USER select HAVE_C_RECORDMCOUNT select HAVE_DEBUG_KMEMLEAK select HAVE_DEBUG_STACKOVERFLOW select HAVE_DYNAMIC_FTRACE - select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL + select HAVE_DYNAMIC_FTRACE_WITH_ARGS if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32 + select HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS if PPC_FTRACE_OUT_OF_LINE || (PPC32 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY) + select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS if HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS + select HAVE_DYNAMIC_FTRACE_WITH_REGS if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32 select HAVE_EBPF_JIT - select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU) - select HAVE_FAST_GUP - select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_EFFICIENT_UNALIGNED_ACCESS + select HAVE_GUP_FAST + select HAVE_FTRACE_GRAPH_FUNC + select HAVE_FTRACE_REGS_HAVING_PT_REGS + select HAVE_FUNCTION_ARG_ACCESS_API + select HAVE_FUNCTION_DESCRIPTORS if PPC64_ELF_ABI_V1 select HAVE_FUNCTION_ERROR_INJECTION + select HAVE_FUNCTION_GRAPH_FREGS select HAVE_FUNCTION_GRAPH_TRACER - select HAVE_FUNCTION_TRACER - select HAVE_GCC_PLUGINS if GCC_VERSION >= 50200 # plugin support on gcc <= 5.1 is buggy on PPC + select HAVE_FUNCTION_TRACER if !COMPILE_TEST && (PPC64 || (PPC32 && CC_IS_GCC)) + select HAVE_GCC_PLUGINS select HAVE_GENERIC_VDSO select HAVE_HARDLOCKUP_DETECTOR_ARCH if PPC_BOOK3S_64 && SMP - select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH + select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx) - select HAVE_IDE select HAVE_IOREMAP_PROT - select HAVE_IRQ_EXIT_ON_IRQ_STACK select HAVE_IRQ_TIME_ACCOUNTING select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZMA if DEFAULT_UIMAGE @@ -231,34 +267,51 @@ config PPC select HAVE_KPROBES select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES - select HAVE_LD_DEAD_CODE_DATA_ELIMINATION + select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if HAVE_OBJTOOL_MCOUNT && (!ARCH_USING_PATCHABLE_FUNCTION_ENTRY || (!CC_IS_GCC || GCC_VERSION >= 110100)) select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI if PERF_EVENTS || (PPC64 && PPC_BOOK3S) select HAVE_OPTPROBES + select HAVE_OBJTOOL if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32 + select HAVE_OBJTOOL_MCOUNT if HAVE_OBJTOOL select HAVE_PERF_EVENTS select HAVE_PERF_EVENTS_NMI if PPC64 select HAVE_PERF_REGS select HAVE_PERF_USER_STACK_DUMP + select HAVE_PREEMPT_DYNAMIC_KEY + select HAVE_RETHOOK if KPROBES select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RELIABLE_STACKTRACE select HAVE_RSEQ + select HAVE_SAMPLE_FTRACE_DIRECT if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS + select HAVE_SAMPLE_FTRACE_DIRECT_MULTI if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS + select HAVE_SETUP_PER_CPU_AREA if PPC64 select HAVE_SOFTIRQ_ON_OWN_STACK - select HAVE_STACKPROTECTOR if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2) - select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13) + select HAVE_STACKPROTECTOR if PPC32 && $(cc-option,$(m32-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=0) + select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,$(m64-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r13 -mstack-protector-guard-offset=0) + select HAVE_STATIC_CALL if PPC32 + select HAVE_STATIC_CALL_INLINE if PPC32 select HAVE_SYSCALL_TRACEPOINTS select HAVE_VIRT_CPU_ACCOUNTING + select HAVE_VIRT_CPU_ACCOUNTING_GEN + select HOTPLUG_SMT if HOTPLUG_CPU + select SMT_NUM_THREADS_DYNAMIC select HUGETLB_PAGE_SIZE_VARIABLE if PPC_BOOK3S_64 && HUGETLB_PAGE select IOMMU_HELPER if PPC64 select IRQ_DOMAIN select IRQ_FORCED_THREADING + select KASAN_VMALLOC if KASAN && EXECMEM + select LOCK_MM_AND_FIND_VMA select MMU_GATHER_PAGE_SIZE select MMU_GATHER_RCU_TABLE_FREE + select MMU_GATHER_MERGE_VMAS + select MMU_LAZY_TLB_SHOOTDOWN if PPC_BOOK3S_64 select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE if PPC64 || NOT_COHERENT_CACHE + select NEED_PER_CPU_EMBED_FIRST_CHUNK if PPC64 + select NEED_PER_CPU_PAGE_FIRST_CHUNK if PPC64 select NEED_SG_DMA_LENGTH select OF - select OF_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE select OF_EARLY_FLATTREE select OLD_SIGACTION if PPC32 select OLD_SIGSUSPEND @@ -271,7 +324,8 @@ config PPC select STRICT_KERNEL_RWX if STRICT_MODULE_RWX select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK - select VIRT_TO_BUS if !PPC64 + select TRACE_IRQFLAGS_SUPPORT + select VDSO_GETRANDOM # # Please keep this list sorted alphabetically. # @@ -279,7 +333,10 @@ config PPC config PPC_BARRIER_NOSPEC bool default y - depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E + depends on PPC_BOOK3S_64 || PPC_E500 + +config PPC_HAS_LBARX_LHARX + bool config EARLY_PRINTK bool @@ -292,16 +349,10 @@ config PANIC_TIMEOUT config COMPAT bool "Enable support for 32bit binaries" depends on PPC64 - depends on !CC_IS_CLANG || CLANG_VERSION >= 120000 default y if !CPU_LITTLE_ENDIAN select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION -config SYSVIPC_COMPAT - bool - depends on COMPAT && SYSVIPC - default y - config SCHED_OMIT_FRAME_POINTER bool default y @@ -352,34 +403,53 @@ config ARCH_SUSPEND_POSSIBLE def_bool y depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ - || 44x || 40x + || 44x config ARCH_SUSPEND_NONZERO_CPU def_bool y depends on PPC_POWERNV || PPC_PSERIES -config PPC_DCR_NATIVE - bool +config ARCH_HAS_ADD_PAGES + def_bool y + depends on ARCH_ENABLE_MEMORY_HOTPLUG -config PPC_DCR_MMIO +config PPC_DCR_NATIVE bool config PPC_DCR bool - depends on PPC_DCR_NATIVE || PPC_DCR_MMIO + depends on PPC_DCR_NATIVE default y -config PPC_OF_PLATFORM_PCI - bool - depends on PCI - depends on PPC64 # not supported on 32 bits yet +config PPC_PCI_OF_BUS_MAP + bool "Use pci_to_OF_bus_map (deprecated)" + depends on PPC32 + depends on PPC_PMAC || PPC_CHRP + help + This option uses pci_to_OF_bus_map to map OF nodes to PCI devices, which + restricts the system to only having 256 PCI buses. On CHRP it also causes + the "pci-OF-bus-map" property to be created in the device tree. + + If unsure, say "N". + +config PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT + depends on PPC32 + depends on !PPC_PCI_OF_BUS_MAP + bool "Assign PCI bus numbers from zero individually for each PCI domain" + default y + help + By default on PPC32 were PCI bus numbers unique across all PCI domains. + So system could have only 256 PCI buses independently of available + PCI domains. When this option is enabled then PCI bus numbers are + PCI domain dependent and each PCI controller on own domain can have + 256 PCI buses, like it is on other Linux architectures. config ARCH_SUPPORTS_UPROBES def_bool y config PPC_ADV_DEBUG_REGS bool - depends on 40x || BOOKE + depends on BOOKE default y config PPC_ADV_DEBUG_IACS @@ -426,7 +496,7 @@ source "kernel/Kconfig.hz" config MATH_EMULATION bool "Math emulation" - depends on 4xx || PPC_8xx || PPC_MPC832x || BOOKE || PPC_MICROWATT + depends on 44x || PPC_8xx || PPC_MPC832x || BOOKE || PPC_MICROWATT select PPC_FPU_REGS help Some PowerPC chips designed for embedded applications do not have @@ -445,7 +515,7 @@ choice default MATH_EMULATION_FULL depends on MATH_EMULATION -config MATH_EMULATION_FULL +config MATH_EMULATION_FULL bool "Emulate all the floating point instructions" help Select this option will enable the kernel to support to emulate @@ -493,8 +563,32 @@ config LD_HEAD_STUB_CATCH If unsure, say "N". config MPROFILE_KERNEL - depends on PPC64 && CPU_LITTLE_ENDIAN && FUNCTION_TRACER - def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__) + depends on PPC64_ELF_ABI_V2 && FUNCTION_TRACER + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -mlittle-endian) if CPU_LITTLE_ENDIAN + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -mbig-endian) if CPU_BIG_ENDIAN + +config ARCH_USING_PATCHABLE_FUNCTION_ENTRY + depends on FUNCTION_TRACER && (PPC32 || PPC64_ELF_ABI_V2) + depends on $(cc-option,-fpatchable-function-entry=2) + def_bool y if PPC32 + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN + +config PPC_FTRACE_OUT_OF_LINE + def_bool PPC64 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY + select ARCH_WANTS_PRE_LINK_VMLINUX + +config PPC_FTRACE_OUT_OF_LINE_NUM_RESERVE + int "Number of ftrace out-of-line stubs to reserve within .text" + depends on PPC_FTRACE_OUT_OF_LINE + default 32768 + help + Number of stubs to reserve for use by ftrace. This space is + reserved within .text, and is distinct from any additional space + added at the end of .text before the final vmlinux link. Set to + zero to have stubs only be generated at the end of vmlinux (only + if the size of vmlinux is less than 32MB). Set to a higher value + if building vmlinux larger than 48MB. config HOTPLUG_CPU bool "Support for enabling/disabling CPUs" @@ -506,6 +600,15 @@ config HOTPLUG_CPU Say N if you are unsure. +config INTERRUPT_SANITIZE_REGISTERS + bool "Clear gprs on interrupt arrival" + depends on PPC64 && ARCH_HAS_SYSCALL_WRAPPER + default PPC_BOOK3E_64 || PPC_PSERIES || PPC_POWERNV + help + Reduce the influence of user register state on interrupt handlers and + syscalls through clearing user state from registers before handling + the exception. + config PPC_QUEUED_SPINLOCKS bool "Queued spinlocks" if EXPERT depends on SMP @@ -525,47 +628,42 @@ config PPC64_SUPPORTS_MEMORY_FAILURE default "y" if PPC_POWERNV select ARCH_SUPPORTS_MEMORY_FAILURE -config KEXEC - bool "kexec system call" - depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E - select KEXEC_CORE - help - kexec is a system call that implements the ability to shutdown your - current kernel, and to start another kernel. It is like a reboot - but it is independent of the system firmware. And like a reboot - you can start any kernel with it, not just Linux. - - The name comes from the similarity to the exec system call. - - It is an ongoing process to be certain the hardware in a machine - is properly shutdown, so do not be surprised if this code does not - initially work for you. As of this writing the exact hardware - interface is strongly in flux, so no good recommendation can be - made. - -config KEXEC_FILE - bool "kexec file based system call" - select KEXEC_CORE - select HAVE_IMA_KEXEC if IMA - select BUILD_BIN2C +config ARCH_SUPPORTS_KEXEC + def_bool PPC_BOOK3S || PPC_E500 || (44x && !SMP) + +config ARCH_SUPPORTS_KEXEC_FILE + def_bool PPC64 + +config ARCH_SUPPORTS_KEXEC_PURGATORY + def_bool y + +config ARCH_SELECTS_KEXEC_FILE + def_bool y + depends on KEXEC_FILE select KEXEC_ELF - depends on PPC64 - depends on CRYPTO=y - depends on CRYPTO_SHA256=y + select HAVE_IMA_KEXEC if IMA + +config PPC64_BIG_ENDIAN_ELF_ABI_V2 + # Option is available to BFD, but LLD does not support ELFv1 so this is + # always true there. + prompt "Build big-endian kernel using ELF ABI V2" if LD_IS_BFD && EXPERT + def_bool y + depends on PPC64 && CPU_BIG_ENDIAN + depends on CC_HAS_ELFV2 help - This is a new version of the kexec system call. This call is - file based and takes in file descriptors as system call arguments - for kernel and initramfs as opposed to a list of segments as is the - case for the older kexec call. + This builds the kernel image using the "Power Architecture 64-Bit ELF + V2 ABI Specification", which has a reduced stack overhead and faster + function calls. This internal kernel ABI option does not affect + userspace compatibility. -config ARCH_HAS_KEXEC_PURGATORY - def_bool KEXEC_FILE + The V2 ABI is standard for 64-bit little-endian, but for big-endian + it is less well tested by kernel and toolchain. However some distros + build userspace this way, and it can produce a functioning kernel. config RELOCATABLE bool "Build a relocatable kernel" - depends on PPC64 || (FLATMEM && (44x || FSL_BOOKE)) + depends on PPC64 || (FLATMEM && (44x || PPC_85xx)) select NONSTATIC_KERNEL - select MODULE_REL_CRCS if MODVERSIONS help This builds a kernel image that is capable of running at the location the kernel is loaded at. For ppc32, there is no any @@ -587,7 +685,7 @@ config RELOCATABLE config RANDOMIZE_BASE bool "Randomize the address of the kernel image" - depends on (FSL_BOOKE && FLATMEM && PPC32) + depends on PPC_85xx && FLATMEM depends on RELOCATABLE help Randomizes the virtual address at which the kernel image is @@ -604,20 +702,28 @@ config RELOCATABLE_TEST loaded at, which tends to be non-zero and therefore test the relocation code. -config CRASH_DUMP - bool "Build a dump capture kernel" - depends on PPC64 || PPC_BOOK3S_32 || FSL_BOOKE || (44x && !SMP) - select RELOCATABLE if PPC64 || 44x || FSL_BOOKE - help - Build a kernel suitable for use as a dump capture kernel. - The same kernel binary can be used as production kernel and dump - capture kernel. +config ARCH_SUPPORTS_CRASH_DUMP + def_bool PPC64 || PPC_BOOK3S_32 || PPC_85xx || (44x && !SMP) + +config ARCH_DEFAULT_CRASH_DUMP + bool + default y if !PPC_BOOK3S_32 + +config ARCH_SELECTS_CRASH_DUMP + def_bool y + depends on CRASH_DUMP + select RELOCATABLE if PPC64 || 44x || PPC_85xx + +config ARCH_SUPPORTS_CRASH_HOTPLUG + def_bool y + depends on PPC64 + +config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION + def_bool CRASH_RESERVE config FA_DUMP bool "Firmware-assisted dump" - depends on PPC64 && (PPC_RTAS || PPC_POWERNV) - select CRASH_CORE - select CRASH_DUMP + depends on CRASH_DUMP && PPC64 && (PPC_RTAS || PPC_POWERNV) help A robust mechanism to get reliable kernel crash dump with assistance from firmware. This approach does not use kexec, @@ -660,6 +766,7 @@ config NUMA bool "NUMA Memory Allocation and Scheduler Support" depends on PPC64 && SMP default y if PPC_PSERIES || PPC_POWERNV + select USE_PERCPU_NUMA_NODE_ID help Enable NUMA (Non-Uniform Memory Access) support. @@ -673,10 +780,6 @@ config NODES_SHIFT default "4" depends on NUMA -config USE_PERCPU_NUMA_NODE_ID - def_bool y - depends on NUMA - config HAVE_MEMORYLESS_NODES def_bool y depends on NUMA @@ -711,6 +814,7 @@ config ARCH_MEMORY_PROBE choice prompt "Page size" + default PPC_64K_PAGES if PPC_BOOK3S_64 default PPC_4K_PAGES help Select the kernel logical page size. Increasing the page size @@ -737,19 +841,23 @@ choice config PPC_4K_PAGES bool "4k page size" select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 + select HAVE_PAGE_SIZE_4KB config PPC_16K_PAGES bool "16k page size" depends on 44x || PPC_8xx + select HAVE_PAGE_SIZE_16KB config PPC_64K_PAGES bool "64k page size" depends on 44x || PPC_BOOK3S_64 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 + select HAVE_PAGE_SIZE_64KB config PPC_256K_PAGES bool "256k page size (Requires non-standard binutils settings)" depends on 44x && !PPC_47x + select HAVE_PAGE_SIZE_256KB help Make the page size 256k. @@ -760,19 +868,12 @@ config PPC_256K_PAGES endchoice -config PPC_PAGE_SHIFT - int - default 18 if PPC_256K_PAGES - default 16 if PPC_64K_PAGES - default 14 if PPC_16K_PAGES - default 12 - config THREAD_SHIFT int "Thread shift" if EXPERT range 13 15 default "15" if PPC_256K_PAGES + default "15" if PPC_PSERIES || PPC_POWERNV default "14" if PPC64 - default "14" if KASAN default "13" help Used to define the stack size. The default is almost always what you @@ -782,7 +883,8 @@ config DATA_SHIFT_BOOL bool "Set custom data alignment" depends on ADVANCED_OPTIONS depends on STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE - depends on PPC_BOOK3S_32 || (PPC_8xx && !PIN_TLB_DATA && !STRICT_KERNEL_RWX) + depends on (PPC_8xx && !PIN_TLB_DATA && (!STRICT_KERNEL_RWX || !PIN_TLB_TEXT)) || \ + PPC_BOOK3S_32 || PPC_85xx help This option allows you to set the kernel data alignment. When RAM is mapped by blocks, the alignment needs to fit the size and @@ -794,55 +896,56 @@ config DATA_SHIFT int "Data shift" if DATA_SHIFT_BOOL default 24 if STRICT_KERNEL_RWX && PPC64 range 17 28 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32 - range 19 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx + range 14 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx + range 20 24 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_85xx default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 default 18 if (DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32 - default 23 if STRICT_KERNEL_RWX && PPC_8xx - default 23 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && PIN_TLB_DATA - default 19 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx - default PPC_PAGE_SHIFT + default 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && \ + (PIN_TLB_DATA || PIN_TLB_TEXT) + default 19 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx + default 24 if STRICT_KERNEL_RWX && PPC_85xx + default PAGE_SHIFT help On Book3S 32 (603+), DBATs are used to map kernel text and rodata RO. Smaller is the alignment, greater is the number of necessary DBATs. - On 8xx, large pages (512kb or 8M) are used to map kernel linear - memory. Aligning to 8M reduces TLB misses as only 8M pages are used - in that case. If PIN_TLB is selected, it must be aligned to 8M as - 8M pages will be pinned. - -config FORCE_MAX_ZONEORDER - int "Maximum zone order" - range 8 9 if PPC64 && PPC_64K_PAGES - default "9" if PPC64 && PPC_64K_PAGES - range 13 13 if PPC64 && !PPC_64K_PAGES - default "13" if PPC64 && !PPC_64K_PAGES - range 9 64 if PPC32 && PPC_16K_PAGES - default "9" if PPC32 && PPC_16K_PAGES - range 7 64 if PPC32 && PPC_64K_PAGES - default "7" if PPC32 && PPC_64K_PAGES - range 5 64 if PPC32 && PPC_256K_PAGES - default "5" if PPC32 && PPC_256K_PAGES - range 11 64 - default "11" + On 8xx, large pages (16kb or 512kb or 8M) are used to map kernel + linear memory. Aligning to 8M reduces TLB misses as only 8M pages + are used in that case. If PIN_TLB is selected, it must be aligned + to 8M as 8M pages will be pinned. + +config ARCH_FORCE_MAX_ORDER + int "Order of maximal physically contiguous allocations" + range 7 8 if PPC64 && PPC_64K_PAGES + default "8" if PPC64 && PPC_64K_PAGES + range 12 12 if PPC64 && !PPC_64K_PAGES + default "12" if PPC64 && !PPC_64K_PAGES + range 8 10 if PPC32 && PPC_16K_PAGES + default "8" if PPC32 && PPC_16K_PAGES + range 6 10 if PPC32 && PPC_64K_PAGES + default "6" if PPC32 && PPC_64K_PAGES + range 4 10 if PPC32 && PPC_256K_PAGES + default "4" if PPC32 && PPC_256K_PAGES + range 10 12 + default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. - - This config option is actually maximum order plus one. For example, - a value of 11 means that the largest free memory block is 2^10 pages. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_PAGE_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. The page size is not necessarily 4KB. For example, on 64-bit systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep this in mind when choosing a value for this option. + Don't change if unsure. + config PPC_SUBPAGE_PROT bool "Support setting protections for 4k subpages (subpage_prot syscall)" default n - depends on PPC_BOOK3S_64 && PPC_64K_PAGES + depends on PPC_64S_HASH_MMU && PPC_64K_PAGES help This option adds support for system call to allow user programs to set access permissions (read/write, readonly, or no access) @@ -865,14 +968,6 @@ config PPC_PROT_SAO_LPAR config PPC_COPRO_BASE bool -config SCHED_SMT - bool "SMT (Hyperthreading) scheduler support" - depends on PPC64 && SMP - help - SMT scheduler support improves the CPU scheduler's decision making - when dealing with POWER5 cpus at a cost of slightly increased - overhead in some places. If unsure say N here. - config PPC_DENORMALISATION bool "PowerPC denormalisation exception handling" depends on PPC_BOOK3S_64 @@ -891,7 +986,8 @@ config CMDLINE most cases you will need to specify the root device here. choice - prompt "Kernel command line type" if CMDLINE != "" + prompt "Kernel command line type" + depends on CMDLINE != "" default CMDLINE_FROM_BOOTLOADER config CMDLINE_FROM_BOOTLOADER @@ -940,6 +1036,7 @@ config PPC_MEM_KEYS prompt "PowerPC Memory Protection Keys" def_bool y depends on PPC_BOOK3S_64 + depends on PPC_64S_HASH_MMU select ARCH_USES_HIGH_VMA_FLAGS select ARCH_HAS_PKEYS help @@ -951,12 +1048,17 @@ config PPC_MEM_KEYS If unsure, say y. +config ARCH_PKEY_BITS + int + default 5 + config PPC_SECURE_BOOT prompt "Enable secure boot support" bool depends on PPC_POWERNV || PPC_PSERIES depends on IMA_ARCH_POLICY imply IMA_SECURE_AND_OR_TRUSTED_BOOT + select PSERIES_PLPKS if PPC_PSERIES help Systems with firmware secure boot enabled need to define security policies to extend secure boot to the OS. This config allows a user @@ -974,19 +1076,6 @@ config PPC_SECVAR_SYSFS read/write operations on these variables. Say Y if you have secure boot enabled and want to expose variables to userspace. -config PPC_RTAS_FILTER - bool "Enable filtering of RTAS syscalls" - default y - depends on PPC_RTAS - help - The RTAS syscall API has security issues that could be used to - compromise system integrity. This option enforces restrictions on the - RTAS calls and arguments passed by userspace programs to mitigate - these issues. - - Say Y unless you know what you are doing and the filter is causing - problems for you. - endmenu config ISA_DMA_API @@ -1014,7 +1103,7 @@ config GENERIC_ISA_DMA config PPC_INDIRECT_PCI bool depends on PCI - default y if 40x || 44x + default y if 44x config SBUS bool @@ -1039,15 +1128,12 @@ config FSL_PMC config PPC4xx_CPM bool default y - depends on SUSPEND && (44x || 40x) + depends on SUSPEND && 44x help PPC4xx Clock Power Management (CPM) support (suspend/resume). It also enables support for two different idle states (idle-wait and idle-doze). -config 4xx_SOC - bool - config FSL_LBC bool "Freescale Local Bus support" help @@ -1061,12 +1147,6 @@ config FSL_GTM help Freescale General-purpose Timers support -config PCI_8260 - bool - depends on PCI && 8260 - select PPC_INDIRECT_PCI - default y - config FSL_RIO bool "Freescale Embedded SRIO Controller support" depends on RAPIDIO = y && HAVE_RAPIDIO @@ -1114,7 +1194,7 @@ config LOWMEM_SIZE config LOWMEM_CAM_NUM_BOOL bool "Set number of CAMs to use to map low memory" - depends on ADVANCED_OPTIONS && FSL_BOOKE + depends on ADVANCED_OPTIONS && PPC_85xx help This option allows you to set the maximum number of CAM slots that will be used to map low memory. There are a limited number of slots @@ -1125,13 +1205,16 @@ config LOWMEM_CAM_NUM_BOOL Say N here unless you know what you are doing. config LOWMEM_CAM_NUM - depends on FSL_BOOKE + depends on PPC_85xx int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL - default 3 + default 3 if !STRICT_KERNEL_RWX + default 9 if DATA_SHIFT >= 24 + default 12 if DATA_SHIFT >= 22 + default 15 config DYNAMIC_MEMSTART bool "Enable page aligned dynamic load address for kernel" - depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) + depends on ADVANCED_OPTIONS && FLATMEM && (PPC_85xx || 44x) select NONSTATIC_KERNEL help This option enables the kernel to be loaded at any page aligned @@ -1180,7 +1263,7 @@ config KERNEL_START config PHYSICAL_START_BOOL bool "Set physical address where the kernel is loaded" - depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE + depends on ADVANCED_OPTIONS && FLATMEM && PPC_85xx help This gives the physical address where the kernel is loaded. @@ -1193,7 +1276,7 @@ config PHYSICAL_START config PHYSICAL_ALIGN hex - default "0x04000000" if FSL_BOOKE + default "0x04000000" if PPC_85xx help This value puts the alignment restrictions on physical address where kernel is loaded and run from. Kernel is compiled for an @@ -1212,10 +1295,37 @@ config TASK_SIZE_BOOL config TASK_SIZE hex "Size of user task space" if TASK_SIZE_BOOL default "0x80000000" if PPC_8xx - default "0xb0000000" if PPC_BOOK3S_32 + default "0xb0000000" if PPC_BOOK3S_32 && EXECMEM default "0xc0000000" + +config MODULES_SIZE_BOOL + bool "Set custom size for modules/execmem area" + depends on EXECMEM && ADVANCED_OPTIONS + help + This option allows you to set the size of kernel virtual address + space dedicated for modules/execmem. + For the time being it is only for 8xx and book3s/32. Other + platform share it with vmalloc space. + + Say N here unless you know what you are doing. + +config MODULES_SIZE + int "Size of modules/execmem area (In Mbytes)" if MODULES_SIZE_BOOL + range 1 256 if EXECMEM + default 64 if EXECMEM && PPC_BOOK3S_32 + default 32 if EXECMEM && PPC_8xx + default 0 + endmenu +config PPC64_PROC_SYSTEMCFG + def_bool y + depends on PPC64 && PROC_FS + help + This option enables the presence of /proc/ppc64/systemcfg through + which the systemcfg page can be accessed. + This interface only exists for backwards-compatibility. + if PPC64 # This value must have zeroes in the bottom 60 bits otherwise lots will break config PAGE_OFFSET @@ -1229,9 +1339,6 @@ config PHYSICAL_START default "0x00000000" endif -config ARCH_RANDOM - def_bool n - config PPC_LIB_RHEAP bool |