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Diffstat (limited to 'doc/guides/nics/virtio.rst')
| -rw-r--r-- | doc/guides/nics/virtio.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst index 4d6a8376..af82f86e 100644 --- a/doc/guides/nics/virtio.rst +++ b/doc/guides/nics/virtio.rst @@ -291,6 +291,13 @@ interrupt, Rx interrupts, and Tx interrupts. Config interrupt is used for notification of device configuration changes, especially link status (lsc). Interrupt mode is translated into Rx interrupts in the context of DPDK. +.. Note:: + + Virtio PMD already has support for receiving lsc from qemu when the link + status changes, especially when vhost user disconnects. However, it fails + to do that if the VM is created by qemu 2.6.2 or below, since the + capability to detect vhost user disconnection is introduced in qemu 2.7.0. + Prerequisites for Rx interrupts ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |