diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 41 |
1 files changed, 6 insertions, 35 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c314eb429b9f..393d71124f5d 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -256,6 +256,7 @@ config ARM64 select HOTPLUG_SMT if HOTPLUG_CPU select IRQ_DOMAIN select IRQ_FORCED_THREADING + select JUMP_LABEL select KASAN_VMALLOC if KASAN select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_RELA @@ -659,9 +660,6 @@ config ARM64_ERRATUM_843419 If unsure, say Y. -config ARM64_LD_HAS_FIX_ERRATUM_843419 - def_bool $(ld-option,--fix-cortex-a53-843419) - config ARM64_ERRATUM_1024718 bool "Cortex-A55: 1024718: Update of DBM/AP bits without break before make might result in incorrect update" default y @@ -1619,6 +1617,9 @@ config ARCH_SUPPORTS_KEXEC_IMAGE_VERIFY_SIG config ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_SIG def_bool y +config ARCH_SUPPORTS_KEXEC_HANDOVER + def_bool y + config ARCH_SUPPORTS_CRASH_DUMP def_bool y @@ -1907,13 +1908,9 @@ config ARM64_PAN The feature is detected at runtime, and will remain as a 'nop' instruction if the cpu does not implement the feature. -config AS_HAS_LSE_ATOMICS - def_bool $(as-instr,.arch_extension lse) - config ARM64_LSE_ATOMICS bool default ARM64_USE_LSE_ATOMICS - depends on AS_HAS_LSE_ATOMICS config ARM64_USE_LSE_ATOMICS bool "Atomic instructions" @@ -1925,20 +1922,12 @@ config ARM64_USE_LSE_ATOMICS Say Y here to make use of these instructions for the in-kernel atomic routines. This incurs a small overhead on CPUs that do - not support these instructions and requires the kernel to be - built with binutils >= 2.25 in order for the new instructions - to be used. + not support these instructions. 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) - -config AS_HAS_SHA3 - def_bool $(as-instr,.arch armv8.2-a+sha3) - config ARM64_PMEM bool "Enable support for persistent memory" select ARCH_HAS_PMEM_API @@ -2012,7 +2001,6 @@ config ARM64_PTR_AUTH_KERNEL bool "Use pointer authentication for kernel" default y depends on ARM64_PTR_AUTH - depends on (CC_HAS_SIGN_RETURN_ADDRESS || CC_HAS_BRANCH_PROT_PAC_RET) && AS_HAS_ARMV8_3 # Modern compilers insert a .note.gnu.property section note for PAC # which is only understood by binutils starting with version 2.33.1. depends on LD_IS_LLD || LD_VERSION >= 23301 || (CC_IS_GCC && GCC_VERSION < 90100) @@ -2033,19 +2021,10 @@ config CC_HAS_BRANCH_PROT_PAC_RET # GCC 9 or later, clang 8 or later def_bool $(cc-option,-mbranch-protection=pac-ret+leaf) -config CC_HAS_SIGN_RETURN_ADDRESS - # GCC 7, 8 - def_bool $(cc-option,-msign-return-address=all) - -config AS_HAS_ARMV8_3 - def_bool $(cc-option,-Wa$(comma)-march=armv8.3-a) - config AS_HAS_CFI_NEGATE_RA_STATE + # binutils 2.34+ def_bool $(as-instr,.cfi_startproc\n.cfi_negate_ra_state\n.cfi_endproc\n) -config AS_HAS_LDAPR - def_bool $(as-instr,.arch_extension rcpc) - endmenu # "ARMv8.3 architectural features" menu "ARMv8.4 architectural features" @@ -2073,20 +2052,13 @@ config ARM64_AMU_EXTN correctly reflect reality. Most commonly, the value read will be 0, indicating that the counter is not enabled. -config AS_HAS_ARMV8_4 - def_bool $(cc-option,-Wa$(comma)-march=armv8.4-a) - config ARM64_TLB_RANGE bool "Enable support for tlbi range feature" default y - depends on AS_HAS_ARMV8_4 help ARMv8.4-TLBI provides TLBI invalidation instruction that apply to a range of input addresses. - The feature introduces new assembly instructions, and they were - support when binutils >= 2.30. - endmenu # "ARMv8.4 architectural features" menu "ARMv8.5 architectural features" @@ -2162,7 +2134,6 @@ config ARM64_MTE default y depends on ARM64_AS_HAS_MTE && ARM64_TAGGED_ADDR_ABI depends on AS_HAS_ARMV8_5 - depends on AS_HAS_LSE_ATOMICS # Required for tag checking in the uaccess routines select ARM64_PAN select ARCH_HAS_SUBPAGE_FAULTS |