netdev - Re: gso: Attempt to handle mega-GRO packets

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Message-ID: <20131107024116.GA29511@gondor.apana.org.au>
Date:	Thu, 7 Nov 2013 10:41:16 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Ben Hutchings <bhutchings@...arflare.com>,
	David Miller <davem@...emloft.net>,
	christoph.paasch@...ouvain.be, netdev@...r.kernel.org,
	hkchu@...gle.com, mwdalton@...gle.com, mst@...hat.com,
	Jason Wang <jasowang@...hat.com>
Subject: Re: gso: Attempt to handle mega-GRO packets

On Wed, Nov 06, 2013 at 06:37:35PM -0800, Eric Dumazet wrote:
>
> If the hypervisor is doomed, there is nothing we can do.

It's not just the hypervisor you know.  There is also DMA etc.
The hypervisor doesn't know that there is stuff in the page that
should not be exposed.

Also one day we may want to do zero-copy receive in which case
this would be even more important.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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