Re: [PATCH] nvme: Enable acceleration feature of A64FX processor

Keith Busch
2019-02-01T14:54:58Z

On Fri, Feb 01, 2019 at 09:46:15PM +0900, Takao Indoh wrote:
> From: Takao Indoh <indou.takao@fujitsu.com>
>
> Fujitsu A64FX processor has a feature to accelerate data transfer of
> internal bus by relaxed ordering. It is enabled when the bit 56 of dma
> address is set to 1.

Wait, what? RO is a standard PCIe TLP attribute. Why would we need this?