From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: jianfeng.tan@intel.com, stefanha@redhat.com, tiwei.bie@intel.com,
jfreimann@redhat.com, dev@dpdk.org
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [RFC 0/3] vhost: multiqueue improvements
Date: Thu, 22 Feb 2018 19:19:07 +0100 [thread overview]
Message-ID: <20180222181910.23134-1-maxime.coquelin@redhat.com> (raw)
The series introduce support for a new protocol request that
notifies the backend with Virtio device status updates.
Main goal is to be able with Virtio 1.0 devices to start
the port even if the guest hasn't initialized all the
queue pairs of the device. This case happens for example
with Windows driver if more queue pairs are declared than
there are vCPUs.
The patch also handles reset and failed driver status to
stop the device and destroy the virtqueues.
Last patch implements a workaround for old and current
QEMUs, that sends SET_VRING_ADDR requests for uninitalized
queues, which can leads to guest memory corruption if
the host application requests to diasble queues
notifications.
I posted the series as RFC, as the QEMU & specification
parts for the new request haven't been accepted yet.
Maxime Coquelin (3):
vhost: invalidate vring addresses in cleanup_vq()
vhost: add SET_VIRTIO_STATUS support
vhost_user: work around invalid rings addresses sent by QEMU
lib/librte_vhost/vhost.c | 6 ++-
lib/librte_vhost/vhost.h | 4 +-
lib/librte_vhost/vhost_user.c | 113 +++++++++++++++++++++++++++++++++++++++++-
lib/librte_vhost/vhost_user.h | 5 +-
4 files changed, 123 insertions(+), 5 deletions(-)
--
2.14.3
next reply other threads:[~2018-02-22 18:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-22 18:19 Maxime Coquelin [this message]
2018-02-22 18:19 ` [dpdk-dev] [RFC 1/3] vhost: invalidate vring addresses in cleanup_vq() Maxime Coquelin
2018-02-27 11:22 ` Jens Freimann
2018-02-27 11:44 ` Maxime Coquelin
2018-02-27 11:54 ` Jens Freimann
2018-02-22 18:19 ` [dpdk-dev] [RFC 2/3] vhost: add SET_VIRTIO_STATUS support Maxime Coquelin
2018-02-27 13:10 ` Jens Freimann
2018-02-27 14:04 ` Maxime Coquelin
2018-02-22 18:19 ` [dpdk-dev] [RFC 3/3] vhost_user: work around invalid rings addresses sent by QEMU Maxime Coquelin
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