Add documentation files for the PCI subsystem's participation in Live
Update.

These documentation files are generated from the kernel-doc comments
in the PCI Live Update source code. They describe the File-Lifecycle
Bound (FLB) API, the device tracking API, and the specific policies
applied to preserved devices (such as bus number inheritance and bus
mastering preservation).

Signed-off-by: David Matlack <dmatlack@google.com>
---
 Documentation/PCI/index.rst           |  1 +
 Documentation/PCI/liveupdate.rst      | 23 +++++++++++++++++++++++
 Documentation/core-api/liveupdate.rst |  1 +
 MAINTAINERS                           |  1 +
 4 files changed, 26 insertions(+)
 create mode 100644 Documentation/PCI/liveupdate.rst

diff --git a/Documentation/PCI/index.rst b/Documentation/PCI/index.rst
index 5d720d2a415e..23fb737ac969 100644
--- a/Documentation/PCI/index.rst
+++ b/Documentation/PCI/index.rst
@@ -20,3 +20,4 @@ PCI Bus Subsystem
    controller/index
    boot-interrupts
    tph
+   liveupdate
diff --git a/Documentation/PCI/liveupdate.rst b/Documentation/PCI/liveupdate.rst
new file mode 100644
index 000000000000..04c9b675e8df
--- /dev/null
+++ b/Documentation/PCI/liveupdate.rst
@@ -0,0 +1,23 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+===========================
+PCI Support for Live Update
+===========================
+
+.. kernel-doc:: drivers/pci/liveupdate.c
+   :doc: PCI Live Update
+
+PCI Preservation ABI
+====================
+
+.. kernel-doc:: include/linux/kho/abi/pci.h
+   :doc: PCI File-Lifecycle Bound (FLB) Live Update ABI
+
+.. kernel-doc:: include/linux/kho/abi/pci.h
+   :internal:
+
+See Also
+========
+
+ * :doc:`/core-api/liveupdate`
+ * :doc:`/core-api/kho/index`
diff --git a/Documentation/core-api/liveupdate.rst b/Documentation/core-api/liveupdate.rst
index 5a292d0f3706..d56a7760978a 100644
--- a/Documentation/core-api/liveupdate.rst
+++ b/Documentation/core-api/liveupdate.rst
@@ -70,3 +70,4 @@ See Also
 
 - :doc:`Live Update uAPI </userspace-api/liveupdate>`
 - :doc:`/core-api/kho/index`
+- :doc:`PCI </PCI/liveupdate>`
diff --git a/MAINTAINERS b/MAINTAINERS
index 94af31837375..42dbac2c2ed3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -20564,6 +20564,7 @@ Q:	https://patchwork.kernel.org/project/linux-pci/list/
 B:	https://bugzilla.kernel.org
 C:	irc://irc.oftc.net/linux-pci
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
+F:	Documentation/PCI/liveupdate.rst
 F:	drivers/pci/liveupdate.c
 F:	include/linux/kho/abi/pci.h
 
-- 
2.54.0.rc2.544.gc7ae2d5bb8-goog