Re: [Xen-devel] netback BUG_ON when using copy_skb=1

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 22.10.13 at 03:18, jerry <jerry.lilijun@xxxxxxxxxx> wrote:
> I have proved that the GTF_reading or GTF_writing is surely cleared after 
> __gnttab_copy().
> So the question is where the GTF_reading is set.
> Is hypervisor doing a grant copy operation while VM netfront calling 
> xennet_tx_buf_gc()?

Surely not - grant copy operations would only ever be invoked by
netback.

Jan


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