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SubjectRe: [PATCH 2.6.30] RDMA/cxgb3: Remove modulo math.

Randy Dunlap wrote:
> Steve Wise wrote:
>
>> From: Steve Wise <swise@opengridcomputing.com>
>>
>> Removes the need for special u64 math on i386 systems.
>>
>> Fixes i386 build break in linux-next introduced by
>> commit 1e27e8cee0698259ccb1fe6abeaf4b48969c0945.
>>
>> Signed-off-by: Steve Wise <swise@opengridcomputing.com>
>>
>
> Yes, that works, thanks. But this patch should go into 2.6.29, not
> just 2.6.30.
>
>
>
I thought the commit that caused this was:

1e27e8cee0698259ccb1fe6abeaf4b48969c0945

And that was going in 2.6.30. (I thought).




>> ---
>>
>> drivers/infiniband/hw/cxgb3/iwch_qp.c | 8 ++++----
>> 1 files changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
>> index 2cf6f13..5bb299a 100644
>> --- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
>> +++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
>> @@ -232,8 +232,8 @@ static int iwch_sgl2pbl_map(struct iwch_dev *rhp, struct ib_sge *sg_list,
>> return -EINVAL;
>> }
>> offset = sg_list[i].addr - mhp->attr.va_fbo;
>> - offset += ((u64) mhp->attr.va_fbo) %
>> - (1UL << (12 + mhp->attr.page_size));
>> + offset += mhp->attr.va_fbo &
>> + ((1UL << (12 + mhp->attr.page_size)) - 1);
>> pbl_addr[i] = ((mhp->attr.pbl_addr -
>> rhp->rdev.rnic_info.pbl_base) >> 3) +
>> (offset >> (12 + mhp->attr.page_size));
>> @@ -263,8 +263,8 @@ static int build_rdma_recv(struct iwch_qp *qhp, union t3_wr *wqe,
>> wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);
>>
>> /* to in the WQE == the offset into the page */
>> - wqe->recv.sgl[i].to = cpu_to_be64(((u32) wr->sg_list[i].addr) %
>> - (1UL << (12 + page_size[i])));
>> + wqe->recv.sgl[i].to = cpu_to_be64(((u64) wr->sg_list[i].addr) &
>> + ((1UL << (12 + page_size[i]))-1));
>>
>> /* pbl_addr is the adapters address in the PBL */
>> wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_addr[i]);
>>
>
>
>



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