| Message ID | 20240311-arm32-cfi-v3-1-224a0f0a45c2@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | CFI for ARM32 using LLVM | expand |
On Mon, 11 Mar 2024 at 10:15, Linus Walleij <linus.walleij@linaro.org> wrote: > > Support Control Flow Integrity (CFI) when compiling with > CLANG. > > In the as-of-writing LLVM CLANG implementation (v17) > the 32-bit ARM platform is supported by the generic CFI > implementation, which isn't tailored specifically for ARM32 > but works well enough to enable the feature. > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > arch/arm/Kconfig | 1 + > 1 file changed, 1 insertion(+) > This patch should go last no? > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 0af6709570d1..1216656a40bc 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -34,6 +34,7 @@ config ARM > select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX > select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7 > select ARCH_SUPPORTS_ATOMIC_RMW > + select ARCH_SUPPORTS_CFI_CLANG > select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE > select ARCH_SUPPORTS_PER_VMA_LOCK > select ARCH_USE_BUILTIN_BSWAP > > -- > 2.34.1 >
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0af6709570d1..1216656a40bc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -34,6 +34,7 @@ config ARM select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7 select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_CFI_CLANG select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE select ARCH_SUPPORTS_PER_VMA_LOCK select ARCH_USE_BUILTIN_BSWAP
Support Control Flow Integrity (CFI) when compiling with CLANG. In the as-of-writing LLVM CLANG implementation (v17) the 32-bit ARM platform is supported by the generic CFI implementation, which isn't tailored specifically for ARM32 but works well enough to enable the feature. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- arch/arm/Kconfig | 1 + 1 file changed, 1 insertion(+)