@@ -8,7 +8,12 @@ config CC_HAS_PREFIXED
def_bool PPC64 && $(cc-option, -mcpu=power10 -mprefixed)
config CC_HAS_PCREL
- def_bool PPC64 && $(cc-option, -mcpu=power10 -mpcrel)
+ # Clang has a bug (https://github.com/llvm/llvm-project/issues/62372)
+ # where pcrel code is not generated if -msoft-float, -mno-altivec, or
+ # -mno-vsx options are also given. Without these options, fp/vec
+ # instructions are generated from regular kernel code. So Clang can't
+ # do pcrel yet.
+ def_bool PPC64 && CC_IS_GCC && $(cc-option, -mcpu=power10 -mpcrel)
config 32BIT
bool
Clang has a bug that casues the pcrel code model not to be used when any of -msoft-float, -mno-altivec, or -mno-vsx are set. Leaving these off causes FP/vector instructions to be generated, causing crashes. So disable pcrel for clang for now. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/Kconfig | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)