diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 160856de9bbb..7761ffc6dbcf 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1608,6 +1608,17 @@ config RODATA_FULL_DEFAULT_ENABLED This requires the linear region to be mapped down to pages, which may adversely affect performance in some cases. +config ARM64_WXN + bool "Enable WXN attribute so all writable mappings are non-exec" + help + Set the WXN bit in the SCTLR system register so that all writable + mappings are treated as if the PXN/UXN bit is set as well. + If this is set to Y, it can still be disabled at runtime by + passing 'arm64.nowxn' on the kernel command line. + + This should only be set if no software needs to be supported that + relies on being able to execute from writable mappings. + config ARM64_SW_TTBR0_PAN bool "Emulate Privileged Access Never using TTBR0_EL1 switching" help |