From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Tiwei Bie <tiwei.bie@intel.com>, dev@dpdk.org, zhihong.wang@intel.com
Cc: lvyilong.lyl@alibaba-inc.com, yinan.wang@intel.com,
xnhp0320@icloud.com, stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 2/3] vhost: fix vring addr handling during live migration
Date: Fri, 27 Sep 2019 09:54:39 +0200 [thread overview]
Message-ID: <15bba8a1-dc4d-667e-842d-87534d013df5@redhat.com> (raw)
In-Reply-To: <20190819113457.15569-3-tiwei.bie@intel.com>
On 8/19/19 1:34 PM, Tiwei Bie wrote:
> When live migration starts, QEMU will set ring addrs again for
> each virtqueue. In this case, we should try to translate ring
> addrs after we invalidating the ring, otherwise virtqueues can
> be enabled with the addrs untranslated. Besides, also leverage
> the access_ok flag in non-IOMMU case to prevent the data path
> accessing invalidated virtqueues.
>
> Fixes: 5a4933e56be4 ("vhost: postpone ring address translations at kick time only")
> Cc: stable@dpdk.org
>
> Reported-by: Yilong Lv <lvyilong.lyl@alibaba-inc.com>
> Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
> ---
> lib/librte_vhost/vhost.c | 3 +--
> lib/librte_vhost/vhost_user.c | 12 ++++++++++--
> 2 files changed, 11 insertions(+), 4 deletions(-)
>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Thanks,
Maxime
next prev parent reply other threads:[~2019-09-27 7:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-19 11:34 [dpdk-dev] [PATCH 0/3] Some fixes for vhost Tiwei Bie
2019-08-19 11:34 ` [dpdk-dev] [PATCH 1/3] vhost: do not realloc device and queues during running Tiwei Bie
2019-09-18 13:30 ` Maxime Coquelin
2019-08-19 11:34 ` [dpdk-dev] [PATCH 2/3] vhost: fix vring addr handling during live migration Tiwei Bie
2019-09-27 7:54 ` Maxime Coquelin [this message]
2019-08-19 11:34 ` [dpdk-dev] [PATCH 3/3] vhost: protect vring access done by application Tiwei Bie
2019-09-27 8:25 ` Maxime Coquelin
2019-09-27 9:48 ` [dpdk-dev] [PATCH 0/3] Some fixes for vhost Maxime Coquelin
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