kernel / Documentation / ABI / stable / sysfs-hypervisor-xen

What:		/sys/hypervisor/compilation/compile_date
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Contains the build time stamp of the Xen hypervisor
		Might return "<denied>" in case of special security settings
		in the hypervisor.

What:		/sys/hypervisor/compilation/compiled_by
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Contains information who built the Xen hypervisor
		Might return "<denied>" in case of special security settings
		in the hypervisor.

What:		/sys/hypervisor/compilation/compiler
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Compiler which was used to build the Xen hypervisor
		Might return "<denied>" in case of special security settings
		in the hypervisor.

What:		/sys/hypervisor/properties/capabilities
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Space separated list of supported guest system types. Each type
		is in the format: <class>-<major>.<minor>-<arch>
		With:

			======== ============================================
			<class>: "xen" -- x86: paravirtualized, arm: standard
				 "hvm" -- x86 only: fully virtualized
			<major>: major guest interface version
			<minor>: minor guest interface version
			<arch>:  architecture, e.g.:
				 "x86_32": 32 bit x86 guest without PAE
				 "x86_32p": 32 bit x86 guest with PAE
				 "x86_64": 64 bit x86 guest
				 "armv7l": 32 bit arm guest
				 "aarch64": 64 bit arm guest
			======== ============================================

What:		/sys/hypervisor/properties/changeset
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Changeset of the hypervisor (git commit)
		Might return "<denied>" in case of special security settings
		in the hypervisor.

What:		/sys/hypervisor/properties/features
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Features the Xen hypervisor supports for the guest as defined
		in include/xen/interface/features.h printed as a hex value.

What:		/sys/hypervisor/properties/pagesize
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Default page size of the hypervisor printed as a hex value.
		Might return "0" in case of special security settings
		in the hypervisor.

What:		/sys/hypervisor/properties/virtual_start
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Virtual address of the hypervisor as a hex value.

What:		/sys/hypervisor/type
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		Type of hypervisor:
		"xen": Xen hypervisor

What:		/sys/hypervisor/uuid
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		UUID of the guest as known to the Xen hypervisor.

What:		/sys/hypervisor/version/extra
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		The Xen version is in the format <major>.<minor><extra>
		This is the <extra> part of it.
		Might return "<denied>" in case of special security settings
		in the hypervisor.

What:		/sys/hypervisor/version/major
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		The Xen version is in the format <major>.<minor><extra>
		This is the <major> part of it.

What:		/sys/hypervisor/version/minor
Date:		March 2009
KernelVersion:	2.6.30
Contact:	[e-mail]
Description:	If running under Xen:
		The Xen version is in the format <major>.<minor><extra>
		This is the <minor> part of it.

What:		/sys/hypervisor/start_flags/*
Date:		March 2023
KernelVersion:	6.3.0
Contact:	[e-mail]
Description:	If running under Xen:
		All bits in Xen's start-flags are represented as
		boolean files, returning '1' if set, '0' otherwise.
		This takes the place of the defunct /proc/xen/capabilities,
		which would contain "control_d" on dom0, and be empty
		otherwise.  This flag is now exposed as "initdomain" in
		addition to the "privileged" flag; all other possible flags
		are accessible as "unknownXX".