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Date: Tue, 19 Jan 2016 15:54:32 +0800
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
To: "Xie, Huawei" <huawei.xie@intel.com>
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Subject: Re: [dpdk-dev] [PATCH v4 7/8] virtio: add 1.0 support
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On Tue, Jan 19, 2016 at 07:44:04AM +0000, Xie, Huawei wrote:
> On 1/19/2016 1:53 PM, Yuanhan Liu wrote:
> > On Mon, Jan 18, 2016 at 04:50:16PM +0000, Xie, Huawei wrote:
> >> On 1/15/2016 12:34 PM, Yuanhan Liu wrote:
> >>> -static void
> >>> +static int
> >>>  virtio_negotiate_features(struct virtio_hw *hw)
> >>>  {
> >>>  	uint64_t host_features;
> >>> @@ -949,6 +949,22 @@ virtio_negotiate_features(struct virtio_hw *hw)
> >>>  	hw->guest_features = vtpci_negotiate_features(hw, host_features);
> >> Here if we are not modern device, we should remove VIRTIO_F_VERSION_1 in
> >> guest features.
> > VIRTIO_F_VERSION_1 should not be set for legacy virtio device at all.
> 
> Yes, but here this patch sets this VIRTIO_F_VERSION_1 feature even for
> legacy virtio device.
> It doesn't cause issues, but better remove it for legacy virtio device.

It's not set for legacy virtio device (at hw->guest_features), how could
you remove it then???

	--yliu