[PATCH v4 03/13] riscv: Implement cmpxchg32/64() using Zacas

[Andrew Jones]

On Wed, Jul 31, 2024 at 09:23:55AM GMT, Alexandre Ghiti wrote:
> This adds runtime support for Zacas in cmpxchg operations.
> 
> Signed-off-by: Alexandre Ghiti <alexghiti at rivosinc.com>
> ---
>  arch/riscv/Kconfig               | 16 +++++++++++
>  arch/riscv/Makefile              |  3 ++
>  arch/riscv/include/asm/cmpxchg.h | 48 +++++++++++++++++++++-----------
>  3 files changed, 50 insertions(+), 17 deletions(-)

Reviewed-by: Andrew Jones <ajones at ventanamicro.com>