RE: [Xen-devel] [PATCH] Increase MAX_SKBUFF_ORDER

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

>       The recent (changeset 7700) switch to use the 
> architecture specific skbuff allocation routine breaks with 
> very large MTU sizes.
> The below patch raises the MAX_SKBUFF_ORDER to 3. Could this 
> be applied to make it the default?

I suspect the only reason things worked for you before was that you were
relying on swiotlb. (enabled if you have >2GB). I need to think through
the implactions of changing MAX_SKBUFF_ORDER...

Ian

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