Re: [PATCH 0/4] Add support for MSDM ACPI table type

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On 2/18/25 19:12, Daniel P. Berrangé wrote:
> This was requested by KubeVirt in
> 
>   https://gitlab.com/libvirt/libvirt/-/issues/748
> 
> I've not functionally tested this, since I lack any suitable guest
> windows environment this is looking for MSDM tables, nor does my
> machine have MSDM ACPI tables to pass to a guest.
> 
> I'm blindly assuming that the QEMU CLI code is identical except for
> s/SLIC/MSDM/.
> 
> Also I'm pretty unhappy about the situation with the Xen driver
> support. This is pre-existing, and IMHO should never have been added
> as it exists today, as it allows arbitrary passthrough of *any* set
> of ACPI tables, as opposed to a single type of the specific type
> listed in the XML.  This should have been handled with a different
> XML syntax, but with stuck with this undesirable approach now, so
> I've kept it as is.
> 
> Daniel P. Berrangé (4):
>   conf: introduce support for multiple ACPI tables
>   src: validate permitted ACPI table types in libxl/qemu drivers
>   conf: support MSDM ACPI table type
>   qemu: support MSDM ACPI table type
> 
>  docs/formatdomain.rst                         |  4 +-
>  src/conf/domain_conf.c                        | 88 ++++++++++++++-----
>  src/conf/domain_conf.h                        | 22 ++++-
>  src/conf/schemas/domaincommon.rng             |  5 +-
>  src/libvirt_private.syms                      |  2 +
>  src/libxl/libxl_conf.c                        |  8 +-
>  src/libxl/libxl_domain.c                      | 21 +++++
>  src/libxl/xen_xl.c                            | 22 ++++-
>  src/qemu/qemu_command.c                       | 14 ++-
>  src/qemu/qemu_validate.c                      | 16 ++++
>  src/security/security_dac.c                   | 18 ++--
>  src/security/security_selinux.c               | 16 ++--
>  src/security/virt-aa-helper.c                 |  5 +-
>  .../acpi-table-many.x86_64-latest.args        | 34 +++++++
>  .../acpi-table-many.x86_64-latest.xml         | 39 ++++++++
>  tests/qemuxmlconfdata/acpi-table-many.xml     | 31 +++++++
>  tests/qemuxmlconftest.c                       |  1 +
>  17 files changed, 296 insertions(+), 50 deletions(-)
>  create mode 100644 tests/qemuxmlconfdata/acpi-table-many.x86_64-latest.args
>  create mode 100644 tests/qemuxmlconfdata/acpi-table-many.x86_64-latest.xml
>  create mode 100644 tests/qemuxmlconfdata/acpi-table-many.xml
> 

Reviewed-by: Michal Privoznik <mprivozn@xxxxxxxxxx>

I even tested this successfully with the following MSDM table (which was
reconstructed from various posts on stackoverflow and blog posts):

$ hexdump -C msdm.bin
00000000  4d 53 44 4d 55 00 00 00  03 13 48 50 51 4f 45 4d  |MSDMU.....HPQOEM|
00000010  53 4c 49 43 2d 4d 50 43  01 00 00 00 48 50 20 20  |SLIC-MPC....HP  |
00000020  00 00 04 00 01 00 00 00  00 00 00 00 01 00 00 00  |................|
00000030  00 00 00 00 1d 00 00 00  41 42 43 44 45 2d 46 47  |........ABCDE-FG|
00000040  48 49 4a 2d 4b 4c 4d 4e  4f 2d 50 51 52 53 54 2d  |HIJ-KLMNO-PQRST-|
00000050  55 56 57 58 59                                    |UVWXY|
00000055


Here ABCDE-... is the Windows key.

Michal




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