diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 33 |
1 files changed, 6 insertions, 27 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index b1201d25a8a4..a8d0bd4136db 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -207,6 +207,7 @@ config ARM64 select HAVE_IOREMAP_PROT select HAVE_IRQ_TIME_ACCOUNTING select HAVE_KVM + select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI select HAVE_PERF_EVENTS select HAVE_PERF_REGS @@ -222,6 +223,7 @@ config ARM64 select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_GENERIC_VDSO + select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select IRQ_DOMAIN select IRQ_FORCED_THREADING select KASAN_VMALLOC if KASAN @@ -577,7 +579,6 @@ config ARM64_ERRATUM_845719 config ARM64_ERRATUM_843419 bool "Cortex-A53: 843419: A load or store might access an incorrect address" default y - select ARM64_MODULE_PLTS if MODULES help This option links the kernel with '--fix-cortex-a53-843419' and enables PLT support to replace certain ADRP instructions, which can @@ -1516,7 +1517,7 @@ config XEN # 16K | 27 | 14 | 13 | 11 | # 64K | 29 | 16 | 13 | 13 | config ARCH_FORCE_MAX_ORDER - int "Order of maximal physically contiguous allocations" if EXPERT && (ARM64_4K_PAGES || ARM64_16K_PAGES) + int default "13" if ARM64_64K_PAGES default "11" if ARM64_16K_PAGES default "10" @@ -1619,7 +1620,7 @@ config KUSER_HELPERS the system. This permits binaries to be run on ARMv4 through to ARMv8 without modification. - See Documentation/arm/kernel_user_helpers.rst for details. + See Documentation/arch/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 @@ -2107,26 +2108,6 @@ config ARM64_SME register state capable of holding two dimensional matrix tiles to enable various matrix operations. -config ARM64_MODULE_PLTS - 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" select ARM_GIC_V3 @@ -2167,7 +2148,6 @@ config RELOCATABLE config RANDOMIZE_BASE bool "Randomize the address of the kernel image" - select ARM64_MODULE_PLTS if MODULES select RELOCATABLE help Randomizes the virtual address at which the kernel image is @@ -2198,9 +2178,8 @@ config RANDOMIZE_MODULE_REGION_FULL When this option is not set, the module region will be randomized over a limited range that contains the [_stext, _etext] interval of the core kernel, so branch relocations are almost always in range unless - ARM64_MODULE_PLTS is enabled and the region is exhausted. In this - particular case of region exhaustion, modules might be able to fall - back to a larger 2GB area. + the region is exhausted. In this particular case of region + exhaustion, modules might be able to fall back to a larger 2GB area. config CC_HAVE_STACKPROTECTOR_SYSREG def_bool $(cc-option,-mstack-protector-guard=sysreg -mstack-protector-guard-reg=sp_el0 -mstack-protector-guard-offset=0) |