From: Jambunathan K <jambunathan@netxen.com>
To: xen-devel@lists.xensource.com
Cc: sanjeev@netxen.com
Subject: xen_create_contiguous_region - Regarding
Date: Fri, 06 Apr 2007 16:16:51 +0530 [thread overview]
Message-ID: <4616251B.3030000@netxen.com> (raw)
Our driver maintains it's own set of bounce buffers rather than relying
on swiotlb.
Some context info could be accessed from this thread in the netdev
mailing list - http://marc.info/?l=linux-netdev&m=116430007806101&w=2
Given that we prefer to maintain our own bounce buffers, I could neither
find a dependable API that let the driver allocate machine contiguous
memory (that could later be *pci_map_singled*) nor find a suitable hook
to xen_create_contiguous_region.
As an aside, is there a tweak to "increase" contiguous memory regions
available so that xen_create_contiguous_regions() succeeds. On DomUs,
when swiotlb is enabled, I see some crashes which I would like to avoid
by redistributing memory resources.
Jambunathan K.
next reply other threads:[~2007-04-06 10:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-06 10:46 Jambunathan K [this message]
2007-04-06 11:07 ` xen_create_contiguous_region - Regarding Keir Fraser
2007-04-06 12:54 ` Jambunathan K
2007-04-09 13:17 ` Jambunathan K
2007-04-09 13:24 ` Keir Fraser
2007-04-10 6:25 ` Jambunathan K
2007-04-10 9:17 ` Keir Fraser
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