linux-kernel - [PATCH v2 1/2] doc,xen: document hypervisor sysfs nodes for xen

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Date:   Fri, 26 May 2017 14:56:56 +0200
From:   Juergen Gross <jgross@...e.com>
To:     linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     boris.ostrovsky@...cle.com, gregkh@...uxfoundation.org,
        Juergen Gross <jgross@...e.com>
Subject: [PATCH v2 1/2] doc,xen: document hypervisor sysfs nodes for xen

Today only a few sysfs nodes under /sys/hypervisor/ are documented
for Xen in Documentation/ABI/testing/sysfs-hypervisor-pmu.

Add the remaining Xen sysfs nodes under /sys/hypervisor/ in a new
file Documentation/ABI/stable/sysfs-hypervisor-xen and add the Xen
specific sysfs docs to the MAINTAINERS file.

Signed-off-by: Juergen Gross <jgross@...e.com>
---
V2:
  - rename file to Documentation/ABI/stable/sysfs-hypervisor-xen in
    order to reflect Xen dependency
  - leave pmu entries in old file under testing (Boris Ostrovsky)
---
 Documentation/ABI/stable/sysfs-hypervisor-xen | 107 ++++++++++++++++++++++++++
 MAINTAINERS                                   |   2 +
 2 files changed, 109 insertions(+)
 create mode 100644 Documentation/ABI/stable/sysfs-hypervisor-xen

diff --git a/Documentation/ABI/stable/sysfs-hypervisor-xen b/Documentation/ABI/stable/sysfs-hypervisor-xen
new file mode 100644
index 000000000000..97e4171508c4
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-hypervisor-xen
@@ -0,0 +1,107 @@
+What:		/sys/hypervisor/compilation/compile_date
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		Contains the build time stamp of the Xen hypervisor
+
+What:		/sys/hypervisor/compilation/compiled_by
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		Contains information who built the Xen hypervisor
+
+What:		/sys/hypervisor/compilation/compiler
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		Compiler which was used to build the Xen hypervisor
+
+What:		/sys/hypervisor/properties/capabilities
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+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: full 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:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		Changeset of the hypervisor (git commit)
+
+What:		/sys/hypervisor/properties/features
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+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:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		Default page size of the hypervisor printed as a hex value.
+
+What:		/sys/hypervisor/properties/virtual_start
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+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:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		Type of hypervisor:
+		"xen": Xen hypervisor
+
+What:		/sys/hypervisor/uuid
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+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:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		The Xen version is in the format <major>.<minor><extra>
+		This is the <extra> part of it.
+
+What:		/sys/hypervisor/version/major
+Date:		March 2009
+KernelVersion:	2.6.30
+Contact:	xen-devel@...ts.xenproject.org
+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:	xen-devel@...ts.xenproject.org
+Description:	If running under Xen:
+		The Xen version is in the format <major>.<minor><extra>
+		This is the <minor> part of it.
diff --git a/MAINTAINERS b/MAINTAINERS
index 9e984645c4b0..5d10cc33fc41 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13983,6 +13983,8 @@ F:	drivers/xen/
 F:	arch/x86/include/asm/xen/
 F:	include/xen/
 F:	include/uapi/xen/
+F:	Documentation/ABI/stable/sysfs-hypervisor-xen
+F:	Documentation/ABI/testing/sysfs-hypervisor-pmu
 
 XEN HYPERVISOR ARM
 M:	Stefano Stabellini <sstabellini@...nel.org>
-- 
2.12.0