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Date:   Tue, 24 Jan 2017 21:53:13 +0200
From:   "Michael S. Tsirkin" <>
To:     David Miller <>
Subject: Re: [PATCH v2] virtio_net: fix PAGE_SIZE > 64k

On Tue, Jan 24, 2017 at 02:42:27PM -0500, David Miller wrote:
> From: "Michael S. Tsirkin" <>
> Date: Mon, 23 Jan 2017 21:37:52 +0200
> > I don't have any guests with PAGE_SIZE > 64k but the
> > code seems to be clearly broken in that case
> > more than 8 bit and so the code in mergeable_ctx_to_buf_address
> > does not give us the actual true size.
> > 
> > Cc: John Fastabend <>
> > Signed-off-by: Michael S. Tsirkin <>
> Applied, thanks Michael.
> I am really trying to be patient, but we are about to run out of
> time for fixing the adjust header XDP stuff.
> That should have been resolved in a week or two, but now we're
> basically a month or so later.
> Please come to some kind of agreement about how to implement this
> because we can't let v4.10 go out without this being resolved.
> Thank you.

I didn't realise. Why can't we? I thought that adjust_header is an
optional feature that userspace can test for, so no rush.


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