diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 115 |
1 files changed, 63 insertions, 52 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 0dbae092c9b9..1652a9800ebe 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -45,6 +45,7 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST + select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG @@ -91,11 +92,13 @@ config ARM64 select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 select ARCH_SUPPORTS_NUMA_BALANCING + select ARCH_SUPPORTS_PAGE_TABLE_CHECK select ARCH_WANT_COMPAT_IPC_PARSE_VERSION if COMPAT select ARCH_WANT_DEFAULT_BPF_JIT select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36) + select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP select ARCH_WANT_LD_ORPHAN_WARN select ARCH_WANTS_NO_INSTR select ARCH_HAS_UBSAN_SANITIZE_ALL @@ -262,31 +265,31 @@ config ARM64_CONT_PMD_SHIFT default 4 config ARCH_MMAP_RND_BITS_MIN - default 14 if ARM64_64K_PAGES - default 16 if ARM64_16K_PAGES - default 18 + default 14 if ARM64_64K_PAGES + default 16 if ARM64_16K_PAGES + default 18 # max bits determined by the following formula: # VA_BITS - PAGE_SHIFT - 3 config ARCH_MMAP_RND_BITS_MAX - default 19 if ARM64_VA_BITS=36 - default 24 if ARM64_VA_BITS=39 - default 27 if ARM64_VA_BITS=42 - default 30 if ARM64_VA_BITS=47 - default 29 if ARM64_VA_BITS=48 && ARM64_64K_PAGES - default 31 if ARM64_VA_BITS=48 && ARM64_16K_PAGES - default 33 if ARM64_VA_BITS=48 - default 14 if ARM64_64K_PAGES - default 16 if ARM64_16K_PAGES - default 18 + default 19 if ARM64_VA_BITS=36 + default 24 if ARM64_VA_BITS=39 + default 27 if ARM64_VA_BITS=42 + default 30 if ARM64_VA_BITS=47 + default 29 if ARM64_VA_BITS=48 && ARM64_64K_PAGES + default 31 if ARM64_VA_BITS=48 && ARM64_16K_PAGES + default 33 if ARM64_VA_BITS=48 + default 14 if ARM64_64K_PAGES + default 16 if ARM64_16K_PAGES + default 18 config ARCH_MMAP_RND_COMPAT_BITS_MIN - default 7 if ARM64_64K_PAGES - default 9 if ARM64_16K_PAGES - default 11 + default 7 if ARM64_64K_PAGES + default 9 if ARM64_16K_PAGES + default 11 config ARCH_MMAP_RND_COMPAT_BITS_MAX - default 16 + default 16 config NO_IOPORT_MAP def_bool y if !PCI @@ -313,7 +316,7 @@ config GENERIC_HWEIGHT def_bool y config GENERIC_CSUM - def_bool y + def_bool y config GENERIC_CALIBRATE_DELAY def_bool y @@ -1046,8 +1049,7 @@ config SOCIONEXT_SYNQUACER_PREITS If unsure, say Y. -endmenu - +endmenu # "ARM errata workarounds via the alternatives framework" choice prompt "Page size" @@ -1575,9 +1577,9 @@ config SETEND_EMULATION be unexpected results in the applications. If unsure, say Y -endif +endif # ARMV8_DEPRECATED -endif +endif # COMPAT menu "ARMv8.1 architectural features" @@ -1602,15 +1604,15 @@ config ARM64_PAN bool "Enable support for Privileged Access Never (PAN)" default y help - Privileged Access Never (PAN; part of the ARMv8.1 Extensions) - prevents the kernel or hypervisor from accessing user-space (EL0) - memory directly. + Privileged Access Never (PAN; part of the ARMv8.1 Extensions) + prevents the kernel or hypervisor from accessing user-space (EL0) + memory directly. - Choosing this option will cause any unprotected (not using - copy_to_user et al) memory access to fail with a permission fault. + Choosing this option will cause any unprotected (not using + copy_to_user et al) memory access to fail with a permission fault. - The feature is detected at runtime, and will remain as a 'nop' - instruction if the cpu does not implement the feature. + The feature is detected at runtime, and will remain as a 'nop' + instruction if the cpu does not implement the feature. config AS_HAS_LDAPR def_bool $(as-instr,.arch_extension rcpc) @@ -1638,15 +1640,15 @@ config ARM64_USE_LSE_ATOMICS built with binutils >= 2.25 in order for the new instructions to be used. -endmenu +endmenu # "ARMv8.1 architectural features" menu "ARMv8.2 architectural features" config AS_HAS_ARMV8_2 - def_bool $(cc-option,-Wa$(comma)-march=armv8.2-a) + def_bool $(cc-option,-Wa$(comma)-march=armv8.2-a) config AS_HAS_SHA3 - def_bool $(as-instr,.arch armv8.2-a+sha3) + def_bool $(as-instr,.arch armv8.2-a+sha3) config ARM64_PMEM bool "Enable support for persistent memory" @@ -1690,7 +1692,7 @@ config ARM64_CNP at runtime, and does not affect PEs that do not implement this feature. -endmenu +endmenu # "ARMv8.2 architectural features" menu "ARMv8.3 architectural features" @@ -1753,7 +1755,7 @@ config AS_HAS_PAC config AS_HAS_CFI_NEGATE_RA_STATE def_bool $(as-instr,.cfi_startproc\n.cfi_negate_ra_state\n.cfi_endproc\n) -endmenu +endmenu # "ARMv8.3 architectural features" menu "ARMv8.4 architectural features" @@ -1794,7 +1796,7 @@ config ARM64_TLB_RANGE The feature introduces new assembly instructions, and they were support when binutils >= 2.30. -endmenu +endmenu # "ARMv8.4 architectural features" menu "ARMv8.5 architectural features" @@ -1880,6 +1882,7 @@ config ARM64_MTE depends on AS_HAS_LSE_ATOMICS # Required for tag checking in the uaccess routines depends on ARM64_PAN + select ARCH_HAS_SUBPAGE_FAULTS select ARCH_USES_HIGH_VMA_FLAGS help Memory Tagging (part of the ARMv8.5 Extensions) provides @@ -1901,7 +1904,7 @@ config ARM64_MTE Documentation/arm64/memory-tagging-extension.rst. -endmenu +endmenu # "ARMv8.5 architectural features" menu "ARMv8.7 architectural features" @@ -1910,12 +1913,12 @@ config ARM64_EPAN default y depends on ARM64_PAN help - Enhanced Privileged Access Never (EPAN) allows Privileged - Access Never to be used with Execute-only mappings. + Enhanced Privileged Access Never (EPAN) allows Privileged + Access Never to be used with Execute-only mappings. - The feature is detected at runtime, and will remain disabled - if the cpu does not implement the feature. -endmenu + The feature is detected at runtime, and will remain disabled + if the cpu does not implement the feature. +endmenu # "ARMv8.7 architectural features" config ARM64_SVE bool "ARM Scalable Vector Extension support" @@ -2002,7 +2005,7 @@ config ARM64_DEBUG_PRIORITY_MASKING the validity of ICC_PMR_EL1 when calling concerned functions. If unsure, say N -endif +endif # ARM64_PSEUDO_NMI config RELOCATABLE bool "Build a relocatable kernel image" if EXPERT @@ -2061,7 +2064,19 @@ config STACKPROTECTOR_PER_TASK def_bool y depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_SYSREG -endmenu +# The GPIO number here must be sorted by descending number. In case of +# a multiplatform kernel, we just want the highest value required by the +# selected platforms. +config ARCH_NR_GPIO + int + default 2048 if ARCH_APPLE + default 0 + help + Maximum number of GPIOs in the system. + + If unsure, leave the default value. + +endmenu # "Kernel Features" menu "Boot options" @@ -2125,7 +2140,7 @@ config EFI help This option provides support for runtime services provided by UEFI firmware (such as non-volatile variables, realtime - clock, and platform reset). A UEFI stub is also provided to + clock, and platform reset). A UEFI stub is also provided to allow the kernel to be booted as an EFI application. This is only useful on systems that have UEFI firmware. @@ -2140,11 +2155,7 @@ config DMI However, even with this option, the resultant kernel should continue to boot on existing non-UEFI platforms. -endmenu - -config SYSVIPC_COMPAT - def_bool y - depends on COMPAT && SYSVIPC +endmenu # "Boot options" menu "Power management options" @@ -2161,7 +2172,7 @@ config ARCH_HIBERNATION_HEADER config ARCH_SUSPEND_POSSIBLE def_bool y -endmenu +endmenu # "Power management options" menu "CPU Power Management" @@ -2169,7 +2180,7 @@ source "drivers/cpuidle/Kconfig" source "drivers/cpufreq/Kconfig" -endmenu +endmenu # "CPU Power Management" source "drivers/acpi/Kconfig" @@ -2177,4 +2188,4 @@ source "arch/arm64/kvm/Kconfig" if CRYPTO source "arch/arm64/crypto/Kconfig" -endif +endif # CRYPTO |