On 24.11.2023 11:30, Oleksii Kurochko wrote: > --- /dev/null > +++ b/xen/arch/riscv/include/asm/fence.h > @@ -0,0 +1,12 @@ > +#ifndef _ASM_RISCV_FENCE_H > +#define _ASM_RISCV_FENCE_H > + > +#ifdef CONFIG_SMP > +#define RISCV_ACQUIRE_BARRIER "\tfence r , rw\n" > +#define RISCV_RELEASE_BARRIER "\tfence rw, w\n" > +#else > +#define RISCV_ACQUIRE_BARRIER > +#define RISCV_RELEASE_BARRIER > +#endif > + > +#endif /* _ASM_RISCV_FENCE_H */
Imo such a header would be better to introduce once a use for the constructs appears. Otherwise at the very least it wants explaining in the description what this is going to be needed for. I can't find items of these names in other architectures so far, so this must be something RISC-V-specific. Jan
