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Re: [PATCH v2 3/3] xen: Expose the PMU to the guests
- To: Michal Orzel <michal.orzel@xxxxxxx>
- From: Christian Lindig <christian.lindig@xxxxxxxxxx>
- Date: Wed, 6 Oct 2021 12:31:14 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "Ian Jackson" <iwj@xxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxx>, "Jan Beulich" <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Stefano Stabellini" <sstabellini@xxxxxxxxxx>, Nick Rosbrook <rosbrookn@xxxxxxxxxxxx>, Anthony Perard <anthony.perard@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, David Scott <dave@xxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Roger Pau Monne <roger.pau@xxxxxxxxxx>, "bertrand.marquis@xxxxxxx" <bertrand.marquis@xxxxxxx>
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHXuqF33PA+mkkVkkOV14cr2obRMKvF5taA
- Thread-topic: [PATCH v2 3/3] xen: Expose the PMU to the guests
Add
parameter vpmu to xl domain configuration syntax
to
enable the access to PMU registers by disabling
the
PMU traps(currently only for ARM).
The
current status is that the PMU registers are not
virtualized
and the physical registers are directly
accessible
when this parameter is enabled. There is no
interrupt
support and Xen will not save/restore the
register
values on context switches.
Please
note that this feature is experimental.
Signed-off-by:
Michal Orzel <michal.orzel@xxxxxxx>
Signed-off-by:
Julien Grall <julien@xxxxxxx>
---
docs/man/xl.cfg.5.pod.in
| 17 +++++++++++++++++
tools/golang/xenlight/helpers.gen.go
| 6 ++++++
tools/golang/xenlight/types.gen.go
| 1 +
tools/include/libxl.h
| 6 ++++++
tools/libs/light/libxl_create.c
| 4 ++++
tools/libs/light/libxl_types.idl
| 2 ++
tools/ocaml/libs/xc/xenctrl.ml
| 1 +
tools/ocaml/libs/xc/xenctrl.mli
| 1 +
tools/xl/xl_parse.c
| 2 ++
xen/arch/arm/domain.c
| 10 ++++++++--
xen/arch/arm/setup.c
| 1 +
xen/arch/x86/domain.c
| 6 ++++++
xen/common/domain.c
| 9 ++++++++-
xen/include/asm-arm/domain.h
| 1 +
xen/include/public/domctl.h
| 5 ++++-
15
files changed, 68 insertions(+), 4 deletions(-)
|
|
