Isaku Yamahata 6be8cf56bc acpi/core: always set SCI_EN when SMM isn't supported ... If SMM is not supported, ACPI fixed hardware doesn't support legacy-mode. ACPI-only platform. Where SCI_EN in PM1_CNT register is always set. The bit tells OS legacy mode(SCI_EN cleared) or ACPI mode(SCI_EN set). With the next patch (setting fadt.smi_cmd = 0 when smm isn't enabled), guest Linux tries to switch to ACPI mode, finds smi_cmd = 0, and then fails to initialize acpi subsystem. This patch proactively fixes it. This patch changes guest ABI. To keep compatibility, use "smm-compat" introduced by earlier patch. If the property is true, disable new behavior. ACPI spec 4.8.10.1 PM1 Event Grouping PM1 Eanble Registers > For ACPI-only platforms (where SCI_EN is always set) Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com> Message-Id: <500f62081626997e46f96377393d3662211763a8.1613615732.git.isaku.yamahata@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2021-02-23 10:58:42 -05:00
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acpi_interface.c
acpi-stub.c
acpi-x86-stub.c
aml-build-stub.c
aml-build.c
bios-linker-loader.c
core.c	acpi/core: always set SCI_EN when SMM isn't supported	2021-02-23 10:58:42 -05:00
cpu_hotplug.c
cpu.c
generic_event_device.c
ghes.c
hmat.c
hmat.h
ich9.c	acpi/core: always set SCI_EN when SMM isn't supported	2021-02-23 10:58:42 -05:00
ipmi-stub.c
ipmi.c
Kconfig
memory_hotplug.c
meson.build
nvdimm.c
pci.c
pcihp.c
piix4.c	acpi/core: always set SCI_EN when SMM isn't supported	2021-02-23 10:58:42 -05:00
tco.c
tpm.c
trace-events
trace.h
utils.c
vmgenid.c