On Wed, Jul 31, 2024 at 09:23:57AM GMT, Alexandre Ghiti wrote: > This adds runtime support for Zabha in cmpxchg8/16() operations. > > Note that in the absence of Zacas support in the toolchain, CAS > instructions from Zabha won't be used. > > Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx> > --- > arch/riscv/Kconfig | 18 ++++++++ > arch/riscv/Makefile | 3 ++ > arch/riscv/include/asm/cmpxchg.h | 78 ++++++++++++++++++++------------ > arch/riscv/include/asm/hwcap.h | 1 + > arch/riscv/kernel/cpufeature.c | 1 + > 5 files changed, 72 insertions(+), 29 deletions(-) > Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
