From: Steve Wise <swise@opengridcomputing.com>
To: Roland Dreier <rdreier@cisco.com>
Cc: randy.dunlap@oracle.com, linux-next@vger.kernel.org,
linux-kernel@vger.kernel.org, general@lists.openfabrics.org
Subject: Re: [ofa-general] [PATCH 2.6.30] RDMA/cxgb3: Remove modulo math.
Date: Wed, 11 Feb 2009 12:32:47 -0600 [thread overview]
Message-ID: <499319CF.6050204@opengridcomputing.com> (raw)
In-Reply-To: <adatz70972e.fsf@cisco.com>
Roland Dreier wrote:
> > Note that wr->sg_list[i].addr was being cast to a u32. That was wrong.
>
> Is it possible for the page to be bigger than 4GB? If so then yes you
> might be chopping off high-order bits or something.
>
Yes it is possible.
A MR can be created with an iov_base of say 0xffffffff00000000.
Then any sge.addr entries would be the iob_base + any offset.
> Anyway please send me this change as a separate patch with a changelog
> explaining that you're avoiding the div etc.... I don't want to roll it
> in with the other unrelated fix (which changes code that was never
> upstream anyway).
>
will do.
So you are handling the offset patch that will make it u64 and remove
the mod usage, correct?
I will post a new patch with just this send change.
Steve.
next prev parent reply other threads:[~2009-02-11 18:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-10 18:44 [ofa-general] [PATCH 2.6.30] RDMA/cxgb3: Remove modulo math Steve Wise
2009-02-10 19:04 ` [ofa-general] " Randy Dunlap
2009-02-10 19:10 ` Steve Wise
2009-02-10 19:12 ` Randy Dunlap
2009-02-11 0:38 ` [ofa-general] " Roland Dreier
2009-02-11 1:03 ` Steve Wise
[not found] ` <499223F8.1010204@opengridcomputing.com>
2009-02-11 1:07 ` David Miller
2009-02-11 1:18 ` Roland Dreier
2009-02-11 1:23 ` David Miller
2009-02-11 7:20 ` Roland Dreier
2009-02-11 8:00 ` David Miller
2009-02-11 15:44 ` Steve Wise
2009-02-11 18:12 ` Roland Dreier
2009-02-11 18:32 ` Steve Wise [this message]
2009-02-11 18:36 ` Roland Dreier
2009-02-11 18:44 ` Steve Wise
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