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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/ABI/testing/sysfs-driver-pciback
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
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Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+What: /sys/bus/pci/drivers/pciback/quirks
+Date: Oct 2011
+KernelVersion: 3.1
+Contact: xen-devel@lists.xenproject.org
+Description:
+ If the permissive attribute is set, then writing a string in
+ the format of DDDD:BB:DD.F-REG:SIZE:MASK will allow the guest
+ to write and read from the PCI device. That is Domain:Bus:
+ Device.Function-Register:Size:Mask (Domain is optional).
+ For example::
+
+ #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.