riscv: Implement xchg8/16() using Zabha

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This adds runtime support for Zabha in xchg8/16() operations.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-9-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Alexandre Ghiti 2024-11-03 15:51:48 +01:00 • committed by Palmer Dabbelt

parent f7bd2be766

commit 97ddab7fbe

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1 changed files with 41 additions and 24 deletions

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arch/riscv/include/asm/cmpxchg.h

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