From: Roland Dreier <rdreier@cisco.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: "Bryan O'Sullivan" <bos@pathscale.com>,
openib-general@openib.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5 of 13] ipath - use proper address translation routine
Date: Mon, 01 May 2006 12:28:41 -0700 [thread overview]
Message-ID: <adaaca1tuhi.fsf@cisco.com> (raw)
In-Reply-To: <1146511201.20760.65.camel@laptopd505.fenrus.org> (Arjan van de Ven's message of "Mon, 01 May 2006 21:20:00 +0200")
Arjan> sounds like you need to redesign your layering ;) In linux
Arjan> it's common to have the lowest level driver do the mapping
Arjan> (even when the mid layer will provide the most commonly
Arjan> used helper to do it for the common case)...
It's not that simple of course...
InfiniBand allows RDMA -- _remote_ DMA. So that address might be
something that a protocol sent to the remote host and which is now
showing up for a DMA operation initiated by the remote side. And we
can't very well send a struct page * + offset to the remote side...
next prev parent reply other threads:[~2006-05-01 19:28 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-24 21:22 [PATCH 0 of 13] ipath - various fixes and cleanups Bryan O'Sullivan
2006-04-24 21:22 ` [PATCH 1 of 13] ipath - fix race with exposing reset file Bryan O'Sullivan
2006-04-24 21:22 ` [PATCH 2 of 13] ipath - set up 32-bit DMA mask if 64-bit setup fails Bryan O'Sullivan
2006-05-01 18:47 ` Roland Dreier
2006-05-01 19:56 ` Segher Boessenkool
2006-05-01 21:41 ` Roland Dreier
2006-05-01 23:13 ` Segher Boessenkool
2006-05-01 23:27 ` [openib-general] " Roland Dreier
2006-05-02 0:13 ` Segher Boessenkool
2006-05-02 0:18 ` Roland Dreier
2006-04-24 21:22 ` [PATCH 3 of 13] ipath - iterate over correct number of ports during reset Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 4 of 13] ipath - change handling of PIO buffers Bryan O'Sullivan
2006-04-25 9:32 ` Segher Boessenkool
2006-04-24 21:23 ` [PATCH 5 of 13] ipath - use proper address translation routine Bryan O'Sullivan
2006-05-01 18:50 ` Roland Dreier
2006-05-01 18:54 ` Arjan van de Ven
2006-05-01 19:00 ` Roland Dreier
2006-05-01 19:20 ` Arjan van de Ven
2006-05-01 19:28 ` Roland Dreier [this message]
2006-05-02 13:35 ` Christoph Hellwig
2006-05-02 14:24 ` Roland Dreier
2006-05-02 14:27 ` Christoph Hellwig
2006-05-02 14:55 ` Alan Cox
2006-05-02 14:58 ` Roland Dreier
2006-05-01 19:03 ` Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 6 of 13] ipath - fix verbs registration Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 7 of 13] ipath - prevent hardware from being accessed during reset Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 8 of 13] ipath - fix a number of RC protocol bugs Bryan O'Sullivan
2006-04-25 7:56 ` Andrew Morton
2006-05-01 17:22 ` Roland Dreier
2006-05-01 17:34 ` Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 9 of 13] ipath - simplify RC send posting Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 10 of 13] ipath - simplify IB timer usage Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 11 of 13] ipath - improve sparse annotation Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 12 of 13] ipath - fix label name in interrupt handler Bryan O'Sullivan
2006-04-24 21:23 ` [PATCH 13 of 13] ipath - tidy up white space in a few files Bryan O'Sullivan
2006-05-01 19:17 ` Roland Dreier
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