From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org
Cc: "Juergen Gross" <jgross@suse.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Wei Liu" <wl@xen.org>,
"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
"George Dunlap" <George.Dunlap@eu.citrix.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Ian Jackson" <ian.jackson@eu.citrix.com>,
"Tim Deegan" <tim@xen.org>, "Julien Grall" <julien.grall@arm.com>,
"Jan Beulich" <jbeulich@suse.com>,
"Volodymyr Babchuk" <Volodymyr_Babchuk@epam.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: [Xen-devel] [RFC PATCH 0/5] Add hypervisor sysfs-like support
Date: Wed, 11 Sep 2019 08:19:56 +0200 [thread overview]
Message-ID: <20190911062001.25931-1-jgross@suse.com> (raw)
On the 2019 Xen developer summit there was agreement that the Xen
hypervisor should gain support for a hierarchical name-value store
similar to the Linux kernel's sysfs.
This is a first implementation of that idea adding the basic
functionality to hypervisor and tools side. The interface to any
user program making use of that "xen-sysfs" is a new library
"libxenfs" with a stable interface.
There are still some pending questions, those are:
- access rights:
+ should we allow access to dom0 only, or to all domains, or should
that be possible to set per entry?
+ how to integrate with xsm?
- dynamical entries:
+ do we want support for e.g. per-domain and/or per-cpupool entries?
+ do we want support for debug aids (lock-profiling, debugtrace ..)?
- write access:
+ runtime parameters?
+ debugging aids?
I have added a simple example in the last patch of the series by
supporting access to the .config file used for building the hypervisor.
Juergen Gross (5):
docs: add feature document for Xen hypervisor sysfs-like support
xen: add basic hypervisor filesystem support
libs: add libxenfs
tools: add xenfs tool
xen: add /buildinfo/config entry to hypervisor filesystem
.gitignore | 2 +
docs/features/hypervisorfs.pandoc | 110 +++++++++++++++
tools/Rules.mk | 6 +
tools/libs/Makefile | 1 +
tools/libs/fs/Makefile | 14 ++
tools/libs/fs/core.c | 198 ++++++++++++++++++++++++++
tools/libs/fs/include/xenfs.h | 57 ++++++++
tools/libs/fs/libxenfs.map | 8 ++
tools/libs/fs/xenfs.pc.in | 10 ++
tools/misc/Makefile | 6 +
tools/misc/xenfs.c | 102 ++++++++++++++
xen/arch/arm/traps.c | 1 +
xen/arch/x86/hvm/hypercall.c | 1 +
xen/arch/x86/hypercall.c | 1 +
xen/arch/x86/pv/hypercall.c | 1 +
xen/common/Makefile | 7 +
xen/common/filesystem.c | 287 ++++++++++++++++++++++++++++++++++++++
xen/include/public/errno.h | 1 +
xen/include/public/filesystem.h | 98 +++++++++++++
xen/include/public/xen.h | 1 +
xen/include/xen/filesystem.h | 34 +++++
xen/include/xen/hypercall.h | 8 ++
xen/include/xen/kernel.h | 2 +
xen/tools/Makefile | 9 +-
xen/tools/bin2c.c | 28 ++++
25 files changed, 991 insertions(+), 2 deletions(-)
create mode 100644 docs/features/hypervisorfs.pandoc
create mode 100644 tools/libs/fs/Makefile
create mode 100644 tools/libs/fs/core.c
create mode 100644 tools/libs/fs/include/xenfs.h
create mode 100644 tools/libs/fs/libxenfs.map
create mode 100644 tools/libs/fs/xenfs.pc.in
create mode 100644 tools/misc/xenfs.c
create mode 100644 xen/common/filesystem.c
create mode 100644 xen/include/public/filesystem.h
create mode 100644 xen/include/xen/filesystem.h
create mode 100644 xen/tools/bin2c.c
--
2.16.4
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next reply other threads:[~2019-09-11 6:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 6:19 Juergen Gross [this message]
2019-09-11 6:19 ` [Xen-devel] [RFC PATCH 1/5] docs: add feature document for Xen hypervisor sysfs-like support Juergen Gross
2019-09-11 9:28 ` Jan Beulich
2019-09-11 9:29 ` Juergen Gross
2019-09-11 6:19 ` [Xen-devel] [RFC PATCH 2/5] xen: add basic hypervisor filesystem support Juergen Gross
2019-09-11 6:19 ` [Xen-devel] [RFC PATCH 3/5] libs: add libxenfs Juergen Gross
2019-09-11 6:20 ` [Xen-devel] [RFC PATCH 4/5] tools: add xenfs tool Juergen Gross
2019-09-11 9:30 ` Jan Beulich
2019-09-11 9:57 ` Juergen Gross
2019-09-11 10:07 ` Jan Beulich
2019-09-11 11:34 ` Juergen Gross
2019-09-11 11:50 ` Jan Beulich
2019-09-11 12:41 ` Juergen Gross
2019-09-11 6:20 ` [Xen-devel] [RFC PATCH 5/5] xen: add /buildinfo/config entry to hypervisor filesystem Juergen Gross
2019-09-11 9:24 ` [Xen-devel] [RFC PATCH 0/5] Add hypervisor sysfs-like support Jan Beulich
2019-09-11 10:02 ` Juergen Gross
2019-09-11 11:17 ` Andrew Cooper
2019-09-11 11:29 ` Juergen Gross
2019-09-11 11:54 ` Jan Beulich
2019-09-11 13:01 ` Juergen Gross
2019-09-11 15:01 ` Jan Beulich
2019-09-11 15:06 ` Juergen Gross
2019-09-11 15:20 ` Jan Beulich
2019-09-11 15:26 ` Juergen Gross
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