netdev - Re: [Xen-devel] [PATCH v3 17/20] net/xen-netfront: Make it running on 64KB page granularity

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Message-ID: <55D5A606.7020701@citrix.com>
Date:	Thu, 20 Aug 2015 11:03:50 +0100
From:	David Vrabel <david.vrabel@...rix.com>
To:	Julien Grall <julien.grall@...rix.com>,
	<xen-devel@...ts.xenproject.org>
CC:	<ian.campbell@...rix.com>, <netdev@...r.kernel.org>,
	<stefano.stabellini@...citrix.com>, <linux-kernel@...r.kernel.org>,
	"David Vrabel" <david.vrabel@...rix.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Xen-devel] [PATCH v3 17/20] net/xen-netfront: Make it running
 on 64KB page granularity

On 07/08/15 17:46, Julien Grall wrote:
> The PV network protocol is using 4KB page granularity. The goal of this
> patch is to allow a Linux using 64KB page granularity using network
> device on a non-modified Xen.
> 
> It's only necessary to adapt the ring size and break skb data in small
> chunk of 4KB. The rest of the code is relying on the grant table code.
> 
> Note that we allocate a Linux page for each rx skb but only the first
> 4KB is used. We may improve the memory usage by extending the size of
> the rx skb.

Reviewed-by: David Vrabel <david.vrabel@...rix.com>

David
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