linux-kernel - Re: [GIT PULL] please pull infiniband.git

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Date:	Mon, 3 Nov 2014 06:06:45 +1000
From:	Dave Airlie <airlied@...il.com>
To:	Roland Dreier <roland@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-rdma@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] please pull infiniband.git

On 17 October 2014 08:52, Roland Dreier <roland@...nel.org> wrote:
> Hi Linus,
>
> Please pull from
>
>     git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git tags/rdma-for-linus
>
> ----------------------------------------------------------------
> Main set of InfiniBand/RDMA updates for 3.18 merge window:
>
>  - Large set of iSER initiator improvements
>  - Hardware driver fixes for cxgb4, mlx5 and ocrdma
>  - Small fixes to core midlayer
>

building on 32-bit x86.

 CC [M]  drivers/infiniband/ulp/iser/iser_verbs.o
/home/airlied/devel/kernel/linux-2.6/drivers/infiniband/ulp/iser/iser_verbs.c:
In function ‘iser_handle_comp_error’:
/home/airlied/devel/kernel/linux-2.6/drivers/infiniband/ulp/iser/iser_verbs.c:1171:33:
warning: cast to pointer from integer of different size
[-Wint-to-pointer-cast]
  if (is_iser_tx_desc(iser_conn, (void *)wc->wr_id)) {
                                 ^
/home/airlied/devel/kernel/linux-2.6/drivers/infiniband/ulp/iser/iser_verbs.c:1172:31:
warning: cast to pointer from integer of different size
[-Wint-to-pointer-cast]
   struct iser_tx_desc *desc = (struct iser_tx_desc *)wc->wr_id;
                               ^
/home/airlied/devel/kernel/linux-2.6/drivers/infiniband/ulp/iser/iser_verbs.c:
In function ‘iser_handle_wc’:
/home/airlied/devel/kernel/linux-2.6/drivers/infiniband/ulp/iser/iser_verbs.c:1198:14:
warning: cast to pointer from integer of different size
[-Wint-to-pointer-cast]
    rx_desc = (struct iser_rx_desc *)wc->wr_id;
              ^
/home/airlied/devel/kernel/linux-2.6/drivers/infiniband/ulp/iser/iser_verbs.c:1203:14:
warning: cast to pointer from integer of different size
[-Wint-to-pointer-cast]
    tx_desc = (struct iser_tx_desc *)wc->wr_id;
              ^

Not sure anyone would ever want to run this code on 32-bit boxes, but
I'm a bit worried if wr_id is a 64-bit value, and we encode it into a
32-bit pointer, you'd always lose the top 32-bits.

Dave.
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