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Re: [Xen-devel] jumbo frames

To: Kip Macy <kip.macy@xxxxxxxxx>
Subject: Re: [Xen-devel] jumbo frames
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 11 May 2005 07:21:08 +0100
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
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On 11 May 2005, at 01:14, Kip Macy wrote:

What is the status of jumbo frame support in dom0 and domU? Unless
something has changed I know it isn't supported in domU, but shouldn't
it just work in dom0?

I think it'll just work, but it's untested. If the jumbo area spans multiple memory pages then it needs to be allocated with something like dma_alloc_coherent, or be represented by a fragmented skbuff. (i.e., hopefully the network stack and drivers don't assume that kmalloc() always return physically contiguous memory extents).

 -- Keir


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