From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH v2 2/2] virtio-ring: Allocate indirect buffers from cache when possible
Date: Thu, 06 Sep 2012 17:27:23 +0930
Message-ID: <877gs7inx8.fsf@rustcorp.com.au>
References: <1346159043-16446-1-git-send-email-levinsasha928@gmail.com> <1346159043-16446-2-git-send-email-levinsasha928@gmail.com> <20120828132032.GB2039@redhat.com> <503CC904.3050207@gmail.com> <20120829110748.GB5970@redhat.com> <503E2F27.5060904@gmail.com> <20120829153833.GE7407@redhat.com> <503E4873.6060607@gmail.com> <871uigj747.fsf@rustcorp.com.au> <20120906050257.GA17656@redhat.com>
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Cc: Sasha Levin <levinsasha928@gmail.com>,
	virtualization@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, avi@redhat.com, kvm@vger.kernel.org
To: "Michael S. Tsirkin" <mst@redhat.com>
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List-Id: kvm.vger.kernel.org

"Michael S. Tsirkin" <mst@redhat.com> writes:
> Yes without checksum net core always linearizes packets, so yes it is
> screwed.
> For -net, skb always allocates space for 17 frags + linear part so
> it seems sane to do same in virtio core, and allocate, for -net,
> up to max_frags + 1 from cache.
> We can adjust it: no _SG -> 2 otherwise 18.

But I thought it used individual buffers these days?

Cheers,
Rusty.