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| author | Sami Tolvanen <samitolvanen@google.com> | 2020-04-27 09:00:16 -0700 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-05-15 16:35:50 +0100 |
| commit | 5287569a790d2546a06db07e391bf84b8bd6cf51 (patch) | |
| tree | 137dc42c9e15afc1b7880798d2ea1ed146301211 /arch/arm64/Kconfig | |
| parent | 9654736891c3ac6a60b52ce70d33cf57cf95bff7 (diff) | |
| download | lwn-5287569a790d2546a06db07e391bf84b8bd6cf51.tar.gz lwn-5287569a790d2546a06db07e391bf84b8bd6cf51.zip | |
arm64: Implement Shadow Call Stack
This change implements shadow stack switching, initial SCS set-up,
and interrupt shadow stacks for arm64.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 40fb05d96c60..c380a16533f6 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -64,6 +64,7 @@ config ARM64 select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS select ARCH_SUPPORTS_MEMORY_FAILURE + select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && (GCC_VERSION >= 50000 || CC_IS_CLANG) select ARCH_SUPPORTS_NUMA_BALANCING @@ -1025,6 +1026,10 @@ config ARCH_HAS_CACHE_LINE_SIZE config ARCH_ENABLE_SPLIT_PMD_PTLOCK def_bool y if PGTABLE_LEVELS > 2 +# Supported by clang >= 7.0 +config CC_HAVE_SHADOW_CALL_STACK + def_bool $(cc-option, -fsanitize=shadow-call-stack -ffixed-x18) + config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" ---help--- |