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Re: [Qemu-devel] [PATCH v4 11/11] virtio: CLI and provide packed ring fe

From: Jason Wang
Subject: Re: [Qemu-devel] [PATCH v4 11/11] virtio: CLI and provide packed ring feature bit by default
Date: Tue, 19 Feb 2019 21:33:40 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 2019/2/19 下午7:23, Wei Xu wrote:
On Tue, Feb 19, 2019 at 03:32:19PM +0800, Jason Wang wrote:
On 2019/2/14 下午12:26,address@hidden  wrote:
From: Wei Xu<address@hidden>

Add userspace and vhost kernel/user support.

Add CLI "ring_packed=true/false" to enable/disable packed ring provision.
     -device virtio-net-pci,netdev=xx,mac=xx:xx:xx:xx:xx:xx,ring_packed=false

By default it is provided.
Please compat this for old machine types.
It is provided by default, how to make it compatible for old machine types?
Hide or provide it?


Take a look at e.g how pc_compat_3_1 and hw_compat_3_1 was used.


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