Re: [PATCH 1/2] libxl: add acpi slic table support

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On Wed, Sep 11, 2019 at 02:34:57AM +0000, Jim Fehlig wrote:
> On 9/10/19 5:24 PM, Marek Marczykowski-Górecki  wrote:
> > On Tue, Sep 10, 2019 at 10:54:15PM +0000, Jim Fehlig wrote:
> >> On 9/6/19 8:31 PM, Marek Marczykowski-Górecki  wrote:
> >>> From: Ivan Kardykov <kardykov@xxxxxxxxx>
> >>>
> >>> Libxl driver did not support setup additional acpi firmware to xen
> >>> guest. It is necessary to activate OEM Windows installs. This patch
> >>> allow to define in OS section acpi table param (which supported domain
> >>> common schema).
> >>>
> >>> Signed-off-by: Ivan Kardykov <kardykov@xxxxxxxxx>
> >>> [added info to docs/formatdomain.html.in]
> >>> Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> >>> ---
> >>>    docs/formatdomain.html.in | 3 ++-
> >>>    src/libxl/libxl_conf.c    | 5 +++++
> >>>    2 files changed, 7 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
> >>> index fcb7c59c00..de612ae870 100644
> >>> --- a/docs/formatdomain.html.in
> >>> +++ b/docs/formatdomain.html.in
> >>> @@ -363,7 +363,8 @@
> >>>          <dd>The <code>table</code> element contains a fully-qualified path
> >>>            to the ACPI table. The <code>type</code> attribute contains the
> >>>            ACPI table type (currently only <code>slic</code> is supported)
> >>> -        <span class="since">Since 1.3.5 (QEMU only)</span></dd>
> >>> +        <span class="since">Since 1.3.5 (QEM)</span>
> >>
> >> You removed one too many characters :-). s/QEM/QEMU/
> >>
> >>> +        <span class="since">Since 5.8.0 (Xen)</span></dd>
> >>>        </dl>
> >>>    
> >>>        <h4><a id="elementsOSContainer">Container boot</a></h4>
> >>> diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
> >>> index 766a726ebc..c1e248d98c 100644
> >>> --- a/src/libxl/libxl_conf.c
> >>> +++ b/src/libxl/libxl_conf.c
> >>> @@ -506,6 +506,11 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
> >>>                              def->features[VIR_DOMAIN_FEATURE_ACPI] ==
> >>>                              VIR_TRISTATE_SWITCH_ON);
> >>>    
> >>> +        /* copy SLIC table path to acpi_firmware */
> >>> +        if (def->os.slic_table &&
> >>> +                VIR_STRDUP(b_info->u.hvm.acpi_firmware, def->os.slic_table) < 0)
> >>> +            return -1;
> >>> +
> >>
> >> Is 'acpi_firmware=' the xl.cfg equivalent setting? If so we'll want it added to
> >> the domXML<->xl.cfg converter (which now lives in the src/libxl/ directory).
> > 
> > Functionally yes. But acpi_firmware= is about generic ACPI table, not
> > only SLIC. This means xl.cfg acpi_firmware= converted to domXML may be
> > misleading. Is it a problem?
> 
> I don't think it's a problem. But let me ask another way: How would you specify 
> the SLIC in xl.cfg? I.e., what would a comparable xl.cfg snippet look like?

acpi_firmware="/sys/firmware/acpi/tables/SLIC"

(for those brave enough ;) )

My concern (maybe not important), is that
acpi_firmware="/path/to/non-SLIC/table" will be converted to SLIC entry
in libvirt xml.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

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