From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sasha Levin <sasha.levin@oracle.com>
Subject: Re: virtio-net mq vq initialization
Date: Mon, 22 Apr 2013 14:32:56 -0400
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Cc: Sasha Levin <sasha.levin@oracle.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Will Deacon <will.deacon@arm.com>, kvm@vger.kernel.org,
	penberg@kernel.org, marc.zyngier@arm.com
To: Jason Wang <jasowang@redhat.com>
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On 04/15/2013 01:58 AM, Jason Wang wrote:
>> Initializing them only when they're actually needed will do the trick here.
> I don't see so much memory allocation with qemu, the main problem I
> guess here is kvmtool does not support mergeable rx buffers ( does it?
> ). So guest must allocate 64K per packet which would be even worse in
> multiqueue case. If mergeable rx buffer was used, the receive buffer
> will only occupy about 256 * 4K (1M) which seems pretty acceptable here.

Yup, kvmtool doesn't do mergable RX at the moment.

I'll add support for that in, thanks for pointing it out!


Thanks,
Sasha