diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-driver-pciback')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-pciback | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-pciback b/Documentation/ABI/testing/sysfs-driver-pciback index 6a733bfa37e6..73308c2b81b0 100644 --- a/Documentation/ABI/testing/sysfs-driver-pciback +++ b/Documentation/ABI/testing/sysfs-driver-pciback @@ -11,3 +11,16 @@ Description: #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks will allow the guest to read and write to the configuration register 0x0E. + +What: /sys/bus/pci/drivers/pciback/allow_interrupt_control +Date: Jan 2020 +KernelVersion: 5.6 +Contact: xen-devel@lists.xenproject.org +Description: + List of devices which can have interrupt control flag (INTx, + MSI, MSI-X) set by a connected guest. It is meant to be set + only when the guest is a stubdomain hosting device model (qemu) + and the actual device is assigned to a HVM. It is not safe + (similar to permissive attribute) to set for a devices assigned + to a PV guest. The device is automatically removed from this + list when the connected pcifront terminates. |