diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 49 |
1 files changed, 39 insertions, 10 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 697ea0510729..3adcec05b1f6 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -24,8 +24,10 @@ config ARM64 select ARCH_HAS_KCOV select ARCH_HAS_KEEPINITRD select ARCH_HAS_MEMBARRIER_SYNC_CORE + select ARCH_HAS_PTE_DEVMAP select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SETUP_DMA_OPS + select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_SET_MEMORY select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX @@ -71,6 +73,7 @@ config ARM64 select ARCH_SUPPORTS_NUMA_BALANCING select ARCH_WANT_COMPAT_IPC_PARSE_VERSION if COMPAT select ARCH_WANT_FRAME_POINTERS + select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36) select ARCH_HAS_UBSAN_SANITIZE_ALL select ARM_AMBA select ARM_ARCH_TIMER @@ -107,6 +110,8 @@ config ARM64 select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select GENERIC_TIME_VSYSCALL + select GENERIC_GETTIMEOFDAY + select GENERIC_COMPAT_VDSO if (!CPU_BIG_ENDIAN && COMPAT) select HANDLE_DOMAIN_IRQ select HARDIRQS_SW_RESEND select HAVE_PCI @@ -140,6 +145,7 @@ config ARM64 select HAVE_DMA_CONTIGUOUS select HAVE_DYNAMIC_FTRACE select HAVE_EFFICIENT_UNALIGNED_ACCESS + select HAVE_FAST_GUP select HAVE_FTRACE_MCOUNT_RECORD select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER @@ -160,6 +166,7 @@ config ARM64 select HAVE_SYSCALL_TRACEPOINTS select HAVE_KPROBES select HAVE_KRETPROBES + select HAVE_GENERIC_VDSO select IOMMU_DMA if IOMMU_SUPPORT select IRQ_DOMAIN select IRQ_FORCED_THREADING @@ -260,10 +267,8 @@ config GENERIC_CALIBRATE_DELAY def_bool y config ZONE_DMA32 - def_bool y - -config HAVE_GENERIC_GUP - def_bool y + bool "Support DMA32 zone" if EXPERT + default y config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y @@ -902,7 +907,6 @@ config SYS_SUPPORTS_HUGETLBFS def_bool y config ARCH_WANT_HUGE_PMD_SHARE - def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36) config ARCH_HAS_CACHE_LINE_SIZE def_bool y @@ -933,7 +937,6 @@ config PARAVIRT config PARAVIRT_TIME_ACCOUNTING bool "Paravirtual steal time accounting" select PARAVIRT - default n help Select this option to enable fine granularity task steal time accounting. Time spent executing other tasks in parallel with @@ -994,7 +997,7 @@ config CRASH_DUMP reserved region and then later executed after a crash by kdump/kexec. - For more details see Documentation/kdump/kdump.txt + For more details see Documentation/admin-guide/kdump/kdump.rst config XEN_DOM0 def_bool y @@ -1140,7 +1143,7 @@ config KUSER_HELPERS the system. This permits binaries to be run on ARMv4 through to ARMv8 without modification. - See Documentation/arm/kernel_user_helpers.txt for details. + See Documentation/arm/kernel_user_helpers.rst for details. However, the fixed address nature of these helpers can be used by ROP (return orientated programming) authors when creating @@ -1418,12 +1421,27 @@ config ARM64_SVE KVM in the same kernel image. config ARM64_MODULE_PLTS - bool + bool "Use PLTs to allow module memory to spill over into vmalloc area" + depends on MODULES select HAVE_MOD_ARCH_SPECIFIC + help + Allocate PLTs when loading modules so that jumps and calls whose + targets are too far away for their relative offsets to be encoded + in the instructions themselves can be bounced via veneers in the + module's PLT. This allows modules to be allocated in the generic + vmalloc area after the dedicated module memory area has been + exhausted. + + When running with address space randomization (KASLR), the module + region itself may be too far away for ordinary relative jumps and + calls, and so in that case, module PLTs are required and cannot be + disabled. + + Specific errata workaround(s) might also force module PLTs to be + enabled (ARM64_ERRATUM_843419). config ARM64_PSEUDO_NMI bool "Support for NMI-like interrupts" - depends on BROKEN # 1556553607-46531-1-git-send-email-julien.thierry@arm.com select CONFIG_ARM_GIC_V3 help Adds support for mimicking Non-Maskable Interrupts through the use of @@ -1436,6 +1454,17 @@ config ARM64_PSEUDO_NMI If unsure, say N +if ARM64_PSEUDO_NMI +config ARM64_DEBUG_PRIORITY_MASKING + bool "Debug interrupt priority masking" + help + This adds runtime checks to functions enabling/disabling + interrupts when using priority masking. The additional checks verify + the validity of ICC_PMR_EL1 when calling concerned functions. + + If unsure, say N +endif + config RELOCATABLE bool help |