diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 39 |
1 files changed, 12 insertions, 27 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e7450fbd0aa7..43091f439e4e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -29,6 +29,7 @@ config ARM64 select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_SET_MEMORY + select ARCH_STACKWALK select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX select ARCH_HAS_SYNC_DMA_FOR_DEVICE @@ -211,12 +212,18 @@ config ARM64_PAGE_SHIFT default 14 if ARM64_16K_PAGES default 12 -config ARM64_CONT_SHIFT +config ARM64_CONT_PTE_SHIFT int default 5 if ARM64_64K_PAGES default 7 if ARM64_16K_PAGES default 4 +config ARM64_CONT_PMD_SHIFT + int + default 5 if ARM64_64K_PAGES + default 5 if ARM64_16K_PAGES + default 4 + config ARCH_MMAP_RND_BITS_MIN default 14 if ARM64_64K_PAGES default 16 if ARM64_16K_PAGES @@ -1165,32 +1172,6 @@ config UNMAP_KERNEL_AT_EL0 If unsure, say Y. -config HARDEN_BRANCH_PREDICTOR - bool "Harden the branch predictor against aliasing attacks" if EXPERT - default y - help - Speculation attacks against some high-performance processors rely on - being able to manipulate the branch predictor for a victim context by - executing aliasing branches in the attacker context. Such attacks - can be partially mitigated against by clearing internal branch - predictor state and limiting the prediction logic in some situations. - - This config option will take CPU-specific actions to harden the - branch predictor against aliasing attacks and may rely on specific - instruction sequences or control bits being set by the system - firmware. - - If unsure, say Y. - -config ARM64_SSBD - bool "Speculative Store Bypass Disable" if EXPERT - default y - help - This enables mitigation of the bypassing of previous stores - by speculative loads. - - If unsure, say Y. - config RODATA_FULL_DEFAULT_ENABLED bool "Apply r/o permissions of VM areas also to their linear aliases" default y @@ -1909,6 +1890,10 @@ config ARCH_ENABLE_HUGEPAGE_MIGRATION def_bool y depends on HUGETLB_PAGE && MIGRATION +config ARCH_ENABLE_THP_MIGRATION + def_bool y + depends on TRANSPARENT_HUGEPAGE + menu "Power management options" source "kernel/power/Kconfig" |