On Sat, 23 Mar 2019 at 16:52, Stefan Agner <[email protected]> wrote: > > The LLVM Target parser currently does not allow to specify the security > extension as part of -march (see also LLVM Bug 40186 [0]). When trying > to use Clang with LLVM's integrated assembler, this leads to a build > errors such as this: > clang-8: error: the clang compiler does not support '-Wa,-march=armv7-a+sec' > > Use ".arch_extension sec" to enable the security extension in a more > portable fasion. > > Note that this is technically not exactly the same as the old code > checked for availabilty of the security extension by calling as-instr. > However, there are already other sites which use ".arch_extension sec" > unconditionally, hence de-facto we need an assembler capable of > ".arch_extension sec" already today (arch/arm/mm/proc-v7.S). The > arch extension "sec" is available since binutils 2.21 according to > its documentation [1]. > > [0] https://bugs.llvm.org/show_bug.cgi?id=40186 > [1] https://sourceware.org/binutils/docs-2.21/as/ARM-Options.html > > Signed-off-by: Stefan Agner <[email protected]> > --- > arch/arm/mach-bcm/Makefile | 3 --- > arch/arm/mach-bcm/bcm_kona_smc.c | 2 -- > arch/arm/mach-exynos/Makefile | 4 ---- > arch/arm/mach-exynos/exynos-smc.S | 2 +- > arch/arm/mach-exynos/sleep.S | 2 +-
for Exynos: Acked-by: Krzysztof Kozlowski <[email protected]> Best regards, Krzysztof
