[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH net RFC] xen-netback: Fix grant ref resolution in RX path

On 14/05/14 17:40, Ian Campbell wrote:

On Wed, 2014-05-14 at 14:25 +0100, Zoltan Kiss wrote:

But of course it should be carefully checked that functions which place
frags into another frags arrays should call orphan_frags, e.g. I guess
skb_shift does such thing. That's what I intend to start another thread

I see Eric has posted a fix for skb_try_coalesce(), but is that likely
to be acceptable for 3.15? How many other similar patches are we
expecting and/or how long do you think this careful checking will take?

Given that we are now at 3.15-rc5 I think we need to decide how to
proceed, either push ahead fixing all these issues or (partially) revert
this netback feature and try again for 3.16.
I guess these problems apply to KVM as well, and it haven't caused them problem so far, so I guess the problem shouldn't be that big. I assume they are using this feature to send fragmented skbs out from a guest, but I might be wrong. Anyway, I think I'll check tomorrow if there are further places to worry about, but I don't think if there are any of them which are easily reproducible.


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.