From: Keir Fraser <keir@xensource.com>
To: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Cc: xen-devel@lists.xensource.com
Subject: Re: Question regarding SLAB corruption
Date: Mon, 09 Jul 2007 18:21:24 +0100 [thread overview]
Message-ID: <C2B82D24.12201%keir@xensource.com> (raw)
In-Reply-To: <20070709171103.GO3885@ics.muni.cz>
On 9/7/07 18:11, "Lukas Hejtmanek" <xhejtman@ics.muni.cz> wrote:
> Well, it looks like that __sync_single is called on the first page that has
> been allocated in the order 6 batch. So, are you saying that this is something
> incorrect?
>
> Because >0 orders do not pass through map_single(), if I understand correctly.
By my understanding, the infiniband driver is doing an order-6 allocation,
then stuffing that multi-page region into a single element of a scatterlist.
It is then calling dma_map_sg(), which [on Xen] calls swiotlb_map_sg(),
which calls map_single() on that multi-page extent. Am I misunderstanding
something?
-- Keir
next prev parent reply other threads:[~2007-07-09 17:21 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-08 0:54 Question regarding SLAB corruption Lukas Hejtmanek
2007-07-08 9:59 ` Keir Fraser
2007-07-08 10:05 ` Lukas Hejtmanek
2007-07-08 10:11 ` Keir Fraser
2007-07-09 7:38 ` Lukas Hejtmanek
2007-07-09 8:02 ` Tian, Kevin
2007-07-09 8:31 ` Keir Fraser
2007-07-09 12:07 ` Lukas Hejtmanek
2007-07-09 12:47 ` Keir Fraser
2007-07-09 13:24 ` Lukas Hejtmanek
2007-07-09 13:42 ` Keir Fraser
2007-07-09 15:39 ` Lukas Hejtmanek
2007-07-09 16:13 ` Keir Fraser
2007-07-09 17:11 ` Lukas Hejtmanek
2007-07-09 17:21 ` Keir Fraser [this message]
2007-07-09 17:42 ` Lukas Hejtmanek
2007-07-09 18:29 ` Keir Fraser
2007-07-09 18:37 ` Lukas Hejtmanek
2007-07-09 18:46 ` Keir Fraser
2007-07-09 19:22 ` Keir Fraser
2007-07-09 19:43 ` Lukas Hejtmanek
2007-07-09 21:18 ` Keir Fraser
2007-07-09 21:26 ` Lukas Hejtmanek
2007-07-09 21:50 ` Lukas Hejtmanek
2007-07-09 19:25 ` Roland Dreier
2007-07-09 19:39 ` Keir Fraser
2007-07-09 20:56 ` Lukas Hejtmanek
2007-07-09 21:07 ` Roland Dreier
2007-07-09 21:14 ` Lukas Hejtmanek
2007-07-09 21:18 ` Roland Dreier
2007-07-09 21:42 ` Lukas Hejtmanek
2007-07-09 21:53 ` Roland Dreier
2007-07-09 22:13 ` Lukas Hejtmanek
2007-07-09 22:30 ` Keir Fraser
2007-07-09 22:30 ` Roland Dreier
2007-07-09 22:34 ` Keir Fraser
2007-07-10 18:47 ` Question: Dynamic code in x86_64 Xen Santos, Jose Renato G
2007-07-10 22:01 ` Keir Fraser
2007-07-10 22:06 ` Santos, Jose Renato G
2007-07-09 21:26 ` Question regarding SLAB corruption Roland Dreier
2007-07-09 21:33 ` Keir Fraser
2007-07-11 9:37 ` Question regarding vm creat&boot tgh
2007-07-09 19:21 ` Question regarding SLAB corruption Roland Dreier
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