From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
To: hanxueluo@126.com
Cc: dev@dpdk.org, Huanle Han <hanxueluo@gmail.com>,
Thomas Monjalon <thomas.monjalon@6wind.com>,
"Yigit, Ferruh" <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [PATCH 1/3] net/virtio: fix dev detachable flag
Date: Fri, 28 Apr 2017 12:58:08 +0800 [thread overview]
Message-ID: <20170428045808.GS11512@yliu-dev.sh.intel.com> (raw)
In-Reply-To: <20170222023423.GN18844@yliu-dev.sh.intel.com>
On Wed, Feb 22, 2017 at 10:34:23AM +0800, Yuanhan Liu wrote:
> On Mon, Feb 20, 2017 at 10:04:45PM +0800, hanxueluo@126.com wrote:
> > From: Huanle Han <hanxueluo@gmail.com>
> >
> > The dev detachable flag was removed by
> > commit f229eb4 ("net/virtio: fix rewriting LSC flag").
> >
> > Signed-off-by: Huanle Han <hanxueluo@gmail.com>
> > ---
> > drivers/net/virtio/virtio_ethdev.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
> > index 4dc03b9..8465e1a 100644
> > --- a/drivers/net/virtio/virtio_ethdev.c
> > +++ b/drivers/net/virtio/virtio_ethdev.c
> > @@ -1336,6 +1336,7 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
> > if (eth_dev->device) {
> > pci_dev = RTE_DEV_TO_PCI(eth_dev->device);
> > rte_eth_copy_pci_info(eth_dev, pci_dev);
> > + eth_dev->data->dev_flags |= RTE_ETH_DEV_DETACHABLE;
>
> This is a partial fix. The major issue here is rte_eth_copy_pci_info has
> an undocumented side effect: it resets the dev_flags unconditionally.
>
> Removing such reset should be able to fix it: it also looks like the right
> fix to me. Thomas, Ferruh?
>
> If not, we could at least call rte_eth_copy_pci_info() at eth_virtio_dev_init(),
> before we set any dev_flags bits.
This issue has been fixed by http://dpdk.org/dev/patchwork/patch/23949/.
--yliu
prev parent reply other threads:[~2017-04-28 5:01 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-20 14:04 hanxueluo
2017-02-20 14:04 ` [dpdk-dev] [PATCH 2/3] net/virtio: fix crash when close virtio dev twice hanxueluo
2017-02-22 2:24 ` Yuanhan Liu
2017-04-28 4:56 ` Yuanhan Liu
2017-02-20 14:04 ` [dpdk-dev] [PATCH 3/3] pci: fix crash caused by invaild memory write hanxueluo
2017-02-22 2:36 ` Yuanhan Liu
2017-05-01 22:59 ` Thomas Monjalon
2017-02-22 2:34 ` [dpdk-dev] [PATCH 1/3] net/virtio: fix dev detachable flag Yuanhan Liu
2017-04-28 4:58 ` Yuanhan Liu [this message]
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