diff options
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 61 |
1 files changed, 32 insertions, 29 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index a6c4407d3ec8..539d1f03ff42 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -4,6 +4,17 @@ 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 @@ -113,6 +124,7 @@ config PPC # select ARCH_32BIT_OFF_T if PPC32 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 @@ -158,6 +170,7 @@ config PPC select ARCH_USE_CMPXCHG_LOCKREF if PPC64 select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS 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 @@ -188,6 +201,7 @@ config PPC select GENERIC_SMP_IDLE_THREAD 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 @@ -200,6 +214,7 @@ config PPC select HAVE_ARCH_KCSAN if PPC_BOOK3S_64 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 @@ -266,13 +281,13 @@ config PPC 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 @@ -290,10 +305,6 @@ config PPC # Please keep this list sorted alphabetically. # -config PPC_LONG_DOUBLE_128 - depends on PPC64 && ALTIVEC - def_bool $(success,test "$(shell,echo __LONG_DOUBLE_128__ | $(CC) -E -P -)" = 1) - config PPC_BARRIER_NOSPEC bool default y @@ -616,8 +627,7 @@ config PPC64_BIG_ENDIAN_ELF_ABI_V2 bool "Build big-endian kernel using ELF ABI V2 (EXPERIMENTAL)" depends on PPC64 && CPU_BIG_ENDIAN depends on CC_HAS_ELFV2 - depends on LD_IS_BFD && LD_VERSION >= 22400 - default n + depends on LD_VERSION >= 22400 || LLD_VERSION >= 150000 help This builds the kernel image using the "Power Architecture 64-Bit ELF V2 ABI Specification", which has a reduced stack overhead and faster @@ -895,34 +905,27 @@ config DATA_SHIFT 8M pages will be pinned. config ARCH_FORCE_MAX_ORDER - 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" + int "Order of maximal physically contiguous allocations" + default "8" if PPC64 && PPC_64K_PAGES + default "12" if PPC64 && !PPC_64K_PAGES + default "8" if PPC32 && PPC_16K_PAGES + default "6" if PPC32 && PPC_64K_PAGES + default "4" if PPC32 && PPC_256K_PAGES + 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_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 |