runtime: remove hotplug_vfio_on_root_bus from toml

In this commit, hotplug_vfio_on_root_bus parameter is removed.
<dd422ccb69>

pcie_root_port parameter description
(`This value is valid when hotplug_vfio_on_root_bus is true and
machine_type is "q35"`) will have no value,
and not completely valid, since vrit or DB as also support for root-ports and CLH as well.
so removed.

Fixes: #11316

Co-authored-by: Zvonko Kaiser <zkaiser@nvidia.com>
Signed-off-by: Shunsuke Kimura <pbrehpuum@gmail.com>

src/runtime/config/configuration-fc.toml.in

@@ -170,13 +170,6 @@ block_device_driver = "@DEFBLOCKSTORAGEDRIVER_FC@"
 # used for 9p packet payload.
 #msize_9p = @DEFMSIZE9P@
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 #
 # Default entropy source.
 # The path to a host source of entropy (including a real hardware RNG)

src/runtime/config/configuration-qemu-coco-dev.toml.in

@@ -362,13 +362,6 @@ pflashes = []
 # Default is false
 #disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Enable hot-plugging of VFIO devices to a bridge-port, 
 # root-port or switch-port. 
 # The default setting is  "no-port"
@@ -384,7 +377,6 @@ pflashes = []
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu-nvidia-gpu-snp.toml.in

@@ -356,17 +356,9 @@ pflashes = []
 # Default is false
 disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu-nvidia-gpu-tdx.toml.in

@@ -340,17 +340,9 @@ pflashes = []
 # Default is false
 #disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu-nvidia-gpu.toml.in

@@ -360,13 +360,6 @@ pflashes = []
 # Default is false
 #disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Enable hot-plugging of VFIO devices to a bridge-port, 
 # root-port or switch-port. 
 # The default setting is  "no-port"
@@ -382,7 +375,6 @@ hot_plug_vfio = "@DEFAULTVFIOPORT_NV@"
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 pcie_root_port = @DEFAULTPCIEROOTPORT_NV@
 

src/runtime/config/configuration-qemu-se.toml.in

@@ -338,17 +338,9 @@ pflashes = []
 # The default setting is "no-port", which means disabled.
 cold_plug_vfio = "bridge-port"
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu-sev.toml.in

@@ -310,17 +310,9 @@ pflashes = []
 # Default is false
 #disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu-snp.toml.in

@@ -356,17 +356,9 @@ disable_nesting_checks = true
 # Default is false
 disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu-tdx.toml.in

@@ -341,17 +341,9 @@ pflashes = []
 # Default is false
 #disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2
 

src/runtime/config/configuration-qemu.toml.in

@@ -361,13 +361,6 @@ pflashes = []
 # Default is false
 #disable_image_nvdimm = true
 
-# VFIO devices are hotplugged on a bridge by default.
-# Enable hotplugging on root bus. This may be required for devices with
-# a large PCI bar, as this is a current limitation with hotplugging on
-# a bridge.
-# Default false
-#hotplug_vfio_on_root_bus = true
-
 # Enable hot-plugging of VFIO devices to a bridge-port, 
 # root-port or switch-port. 
 # The default setting is  "no-port"
@@ -383,7 +376,6 @@ pflashes = []
 # Before hot plugging a PCIe device, you need to add a pcie_root_port device.
 # Use this parameter when using some large PCI bar devices, such as Nvidia GPU
 # The value means the number of pcie_root_port
-# This value is valid when hotplug_vfio_on_root_bus is true and machine_type is "q35"
 # Default 0
 #pcie_root_port = 2