diff options
Diffstat (limited to 'arch/Kconfig')
| -rw-r--r-- | arch/Kconfig | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 975dd22a2dbd..98157b38f5cf 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -17,6 +17,15 @@ config CPU_MITIGATIONS def_bool y endif +# +# Selected by architectures that need custom DMA operations for e.g. legacy +# IOMMUs not handled by dma-iommu. Drivers must never select this symbol. +# +config ARCH_HAS_DMA_OPS + depends on HAS_DMA + select DMA_OPS_HELPERS + bool + menu "General architecture-dependent options" config ARCH_HAS_SUBPAGE_FAULTS @@ -826,6 +835,22 @@ config CFI_CLANG https://clang.llvm.org/docs/ControlFlowIntegrity.html +config CFI_ICALL_NORMALIZE_INTEGERS + bool "Normalize CFI tags for integers" + depends on CFI_CLANG + depends on $(cc-option,-fsanitize=kcfi -fsanitize-cfi-icall-experimental-normalize-integers) + help + This option normalizes the CFI tags for integer types so that all + integer types of the same size and signedness receive the same CFI + tag. + + The option is separate from CONFIG_RUST because it affects the ABI. + When working with build systems that care about the ABI, it is + convenient to be able to turn on this flag first, before Rust is + turned on. + + This option is necessary for using CFI with Rust. If unsure, say N. + config CFI_PERMISSIVE bool "Use CFI in permissive mode" depends on CFI_CLANG @@ -862,7 +887,7 @@ config HAVE_CONTEXT_TRACKING_USER_OFFSTACK Architecture neither relies on exception_enter()/exception_exit() nor on schedule_user(). Also preempt_schedule_notrace() and preempt_schedule_irq() can't be called in a preemptible section - while context tracking is CONTEXT_USER. This feature reflects a sane + while context tracking is CT_STATE_USER. This feature reflects a sane entry implementation where the following requirements are met on critical entry code, ie: before user_exit() or after user_enter(): |