Re: [PATCH RFC 0/3] riscv: Add DMA_COHERENT support

[Guo Ren]

On Wed, May 19, 2021 at 2:06 PM Christoph Hellwig <hch@xxxxxx> wrote:
>
> On Wed, May 19, 2021 at 02:05:00PM +0800, Guo Ren wrote:
> > Since the existing RISC-V ISA cannot solve this problem, it is better
> > to provide some configuration for the SOC vendor to customize.
>
> We've been talking about this problem for close to five years.  So no,
> if you don't manage to get the feature into the ISA it can't be
> supported.

arch/riscv/errata/ is also defined in riscv ISA?

-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/