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[qemu-s390x] [PATCH v2 0/2] s390x/vfio-ap: hot plug/unplug vfio-ap devic


From: Tony Krowiak
Subject: [qemu-s390x] [PATCH v2 0/2] s390x/vfio-ap: hot plug/unplug vfio-ap device
Date: Mon, 18 Feb 2019 12:59:58 -0500

This patch series introduces hot plug/unplug of a vfio-ap device.

A vfio-ap device can be hot plugged only if:

1. The guest does not yet have a vfio-ap device (only one is allowed
   per guest)

2. The guest was started with the following CPU model features enabled:
   * ap=on
   * apft=on

To hot plug a vfio-ap device, the QEMU device_add function may be used:

   (qemu) device_add vfio-ap,sysfsdev=$path-to-mdev

   Where $path-to-mdev is the absolute path to the mediated matrix device
   to be used to configure the guest's AP device matrix.

A vfio-ap device can be hot unplugged only if:

1. The guest was started with a vfio-ap device configured for it:

   -device vfio-ap,sysfsdev=$path-to-mdev

2. The guest was started with the following CPU model features enabled:
   * ap=on

Tony Krowiak (2):
  s390x/vfio-ap: Implement hot plug/unplug of vfio-ap device
  s390x/vfio-ap: document hot plug/unplug of vfio-ap device

 docs/vfio-ap.txt     | 58 +++++++++++++++++++++++++++++++++++++++++++++++-----
 hw/s390x/ap-bridge.c | 12 ++++++++++-
 hw/vfio/ap.c         |  2 +-
 3 files changed, 65 insertions(+), 7 deletions(-)

-- 
2.7.4




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