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BIOS IO Menu Selections
Setup Options
Options
Defaults
Description
is available only if the system
supports 64-bit decoding.
Maximum Payload
Auto/128 Bytes/256 Bytes/512
Bytes/1024 Bytes/2048
Bytes/4096 Bytes
Auto
Set the Maximum Payload of the
PCI Express device or allow the
System BIOS to select the value.
Maximum Read Request
Auto/128 Bytes/256 Bytes/512
Bytes/1024 Bytes/2048
Bytes/4096 Bytes
Auto
Set the Maximum Read Request
of the PCI Express device or
allow the System BIOS to select
the value.
PCIe Hot-Plug Support
Disabled/Enabled
Enabled
If enabled, allows the OS to
support PCIe Hot-Plug. If
disabled, it does not allow the
OS to support PCIe Hot-Plug.
BIOS IO Menu IO Virtualization Options
The following table describes the BIOS IO Menu IO virtualization options.
Setup Options
Options
Defaults
Description
VT-d
Disabled/Enabled
Enabled
Enable or disable Intel
Virtualization Technology for
directed I/O (VT-d) by reporting
the I/O device assignment to
VMM through DMA remapping
reporting (DMAR) Advance
Configuration Power Interface
(ACPI) tables.
ACS
Disabled/Enabled
Disabled
If disabled, programs ACS
only to Chipset PCIe Root Port
Bridges. If enabled, programs
ACS to all PCIe Root Port
Bridges.
SR-IOV Support
Disabled/Enabled
Enabled
Single Root I/O Virtualization
(SR-IOV) is used to configure
devices into multiple virtual
devices that can be used on
virtual OS installations. If
supported by the hardware
and set to enabled, all devices
within the system that are SR-
IOV capable are configured
to support SR-IOV and I/O
resources are allocated to the
device as normal. If set to
disabled, I/O resources are not
allocated to the device.
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Oracle Server X7-8 Service Manual • October 2017
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