> +/*
> + * The clflushopt instruction is very slow on Broadwell, so we use non-temporal
> + * stores instead.
> + */
> +#ifdef CONFIG_X86_64
> +#define NT_STORE(dest, src) asm ("movnti %1, %0" : "=m"(dest) : "r"(src))
> +#define FLUSH_RANGE(dax, ptr, size) do { } while (0)
> +#define COMMIT_FLUSHED() wmb()
> +#else
> +#define NT_STORE(dest, src) ACCESS_ONCE(dest) = (src)
> +#define FLUSH_RANGE dax_flush
> +#define COMMIT_FLUSHED() do { } while (0)
> +#endif
Please go through the proper pmem APIs.
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
