diff options
| author | Igor Mammedov <imammedo@redhat.com> | 2023-07-20 15:38:54 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-08-03 16:06:49 -0400 |
| commit | 44d975ef340e2f21f236f9520c53e1b30d2213a4 (patch) | |
| tree | d37bb0e982f7088d890c284900f4068645915d8f /hw | |
| parent | 45d9d318c8d435cbe2d465f61e6975885d2242ca (diff) | |
x86: acpi: workaround Windows not handling name references in Package properly
it seems that Windows is unable to handle variable references
making it choke up when accessing ASUN during _DSM call
when device is hotplugged (it lists package elements as DataAlias
but despite that later on it misbehaves) with following error
shown up in AMLI debugger (WS2012r2):
Store(ShiftLeft(One,Arg1="ASUN",) AMLI_ERROR(c0140008): Unexpected argument type
ValidateArgTypes: expected Arg1 to be type Integer (Type=String)
Similar outcome with WS2022.
Issue is not fatal but as result acpi-index/"PCI Label ID" property
is either not shown in device details page or shows incorrect value.
Fix it by doing assignment of BSEL/ASUN values to package
elements manually after package declaration.
Fix was tested with: WS2012r2, WS2022, RHEL9
Fixes: 467d099a2985 (x86: acpi: _DSM: use Package to pass parameters)
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20230720133858.1974024-3-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/i386/acpi-build.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 9c74fa17ad..19d268ff59 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -362,10 +362,14 @@ Aml *aml_pci_device_dsm(void) { Aml *params = aml_local(0); Aml *pkg = aml_package(2); - aml_append(pkg, aml_name("BSEL")); - aml_append(pkg, aml_name("ASUN")); + aml_append(pkg, aml_int(0)); + aml_append(pkg, aml_int(0)); aml_append(method, aml_store(pkg, params)); aml_append(method, + aml_store(aml_name("BSEL"), aml_index(params, aml_int(0)))); + aml_append(method, + aml_store(aml_name("ASUN"), aml_index(params, aml_int(1)))); + aml_append(method, aml_return(aml_call5("PDSM", aml_arg(0), aml_arg(1), aml_arg(2), aml_arg(3), params)) ); |