Re: [PATCH v3 3/3] RDMA/rxe: Add RDMA Atomic Write attribute for rxe device

[Jason Gunthorpe <jgg@nvidia.com>]

On Fri, Mar 11, 2022 at 07:52:47PM +0800, Xiao Yang wrote:

> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index abd1c5d3dc66..580b5cacec09 100644
> +++ b/include/rdma/ib_verbs.h
> @@ -291,6 +291,8 @@ enum ib_device_cap_flags {
>  	/* The device supports padding incoming writes to cacheline. */
>  	IB_DEVICE_PCI_WRITE_END_PADDING		= (1ULL << 36),
>  	IB_DEVICE_ALLOW_USER_UNREG		= (1ULL << 37),
> +	/* Atomic write attributes */
> +	IB_DEVICE_ATOMIC_WRITE			= (1ULL << 40),
>  };

Can you make a patch to clean this up too? The right parts of it need
to get moved to the uapi header and it should work similarly to the
ib_uverbs_wr_opcode / ib_wr_opcode thing.

You'll also need to do something about the 32 bit compatability that
kbuild detected - I suppose this can't work on 32 bit platforms? So
IS_ENABLED() it off or something?

Jason