netdev - Re: [PATCH net-next V0 18/21] mlx4_core: adjust catas operation for SRIOV mode

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Message-ID: <CAL1RGDWp2fysTgVgSi30X+nf=66fArPRdXUXedbKxKjyHQqidQ@mail.gmail.com>
Date:	Fri, 2 Dec 2011 09:07:09 -0800
From:	Roland Dreier <roland@...estorage.com>
To:	Yevgeny Petrilin <yevgenyp@...lanox.co.il>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-rdma@...r.kernel.org, liranl@...lanox.co.il,
	jackm@....mellanox.co.il
Subject: Re: [PATCH net-next V0 18/21] mlx4_core: adjust catas operation for
 SRIOV mode

On Fri, Dec 2, 2011 at 2:19 AM, Yevgeny Petrilin
<yevgenyp@...lanox.co.il> wrote:
> When running in SRIOV mode, driver should not automatically start/stop
> the mlx4_core upon sensing an HCA internal error -- doing this disables/enables
> sriov, which will cause the hypervisor to hang if there are running VMs with
> attached VFs.

Not sure I understand this -- what happens if the driver doesn't reset
the device
after a catastrophic error?  Surely all the VFs are pretty screwed at
that point?

Which hypervisor are we talking about here anyway?

 - R.
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