linux-kernel - Re: [PATCH v2] virtio_net: lower limit on buffer size

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Message-Id: <20170602.143254.1054389009843287751.davem@davemloft.net>
Date:   Fri, 02 Jun 2017 14:32:54 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     mst@...hat.com
Cc:     linux-kernel@...r.kernel.org, mpatocka@...hat.com,
        bfields@...ldses.org, jasowang@...hat.com,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2] virtio_net: lower limit on buffer size

From: "Michael S. Tsirkin" <mst@...hat.com>
Date: Fri, 2 Jun 2017 17:54:33 +0300

> commit d85b758f72b0 ("virtio_net: fix support for small rings")
> was supposed to increase the buffer size for small rings but had an
> unintentional side effect of decreasing it for large rings. This seems
> to break some setups - it's not yet clear why, but increasing buffer
> size back to what it was before helps.
> 
> Fixes: d85b758f72b0 ("virtio_net: fix support for small rings")
> Reported-by: Mikulas Patocka <mpatocka@...hat.com>
> Reported-by: "J. Bruce Fields" <bfields@...ldses.org>
> Tested-by: Mikulas Patocka <mpatocka@...hat.com>
> Tested-by: "J. Bruce Fields" <bfields@...ldses.org>
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
> 
> Patch tested, pls merge.
> 
> changes from v2:
> 	commit log tweaks to address comments by Sergei Shtylyov

Applied, thanks Michael.