[PATCH v4 11/14] arm/virt: Wire up a GED error device for ACPI / GHES

Mauro Carvalho Chehab
2025-02-21T14:35:36Z

Adds support to ARM virtualization to allow handling
generic error ACPI Event via GED & error source device.

It is aligned with Linux Kernel patch:
https://lore.kernel.org/lkml/1272350481-27951-8-git-send-email-ying.huang@intel.com/

Co-authored-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Co-authored-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Igor Mammedov <imammedo@redhat.com>

---

Changes from v8:

- Added a call to the function that produces GHES generic
records, as this is now added earlier in this series.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
hw/acpi/generic_event_device.c | 2 +-
hw/arm/virt-acpi-build.c | 1 +
hw/arm/virt.c | 12 +++++++++++-
include/hw/arm/virt.h | 1 +
4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c
index 180eebbce1cd..f5e899155d34 100644
--- a/hw/acpi/generic_event_device.c
+++ b/hw/acpi/generic_event_device.c
@@ -331,7 +331,7 @@ static void acpi_ged_send_event(AcpiDeviceIf *adev, AcpiEventStatusBits ev)

static const Property acpi_ged_properties[] = {
DEFINE_PROP_UINT32("ged-event", AcpiGedState, ged_event_bitmap, 0),
- DEFINE_PROP_BOOL("x-has-hest-addr", AcpiGedState, ghes_state.use_hest_addr, false),
+ DEFINE_PROP_BOOL("x-has-hest-addr", AcpiGedState, ghes_state.use_hest_addr, true),
};

static const VMStateDescription vmstate_memhp_state = {
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 9de51105a513..4f174795ed60 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -861,6 +861,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
}

acpi_dsdt_add_power_button(scope);
+ aml_append(scope, aml_error_device());
#ifdef CONFIG_TPM
acpi_dsdt_add_tpm(scope, vms);
#endif
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 4a5a9666e916..3faf32f900b5 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -678,7 +678,7 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms)
DeviceState *dev;
MachineState *ms = MACHINE(vms);
int irq = vms->irqmap[VIRT_ACPI_GED];
- uint32_t event = ACPI_GED_PWR_DOWN_EVT;
+ uint32_t event = ACPI_GED_PWR_DOWN_EVT | ACPI_GED_ERROR_EVT;

if (ms->ram_slots) {
event |= ACPI_GED_MEM_HOTPLUG_EVT;
@@ -1010,6 +1010,13 @@ static void virt_powerdown_req(Notifier *n, void *opaque)
}
}

+static void virt_generic_error_req(Notifier *n, void *opaque)
+{
+ VirtMachineState *s = container_of(n, VirtMachineState, generic_error_notifier);
+
+ acpi_send_event(s->acpi_dev, ACPI_GENERIC_ERROR);
+}
+
static void create_gpio_keys(char *fdt, DeviceState *pl061_dev,
uint32_t phandle)
{
@@ -2404,6 +2411,9 @@ static void machvirt_init(MachineState *machine)

if (has_ged && aarch64 && firmware_loaded && virt_is_acpi_enabled(vms)) {
vms->acpi_dev = create_acpi_ged(vms);
+ vms->generic_error_notifier.notify = virt_generic_error_req;
+ notifier_list_add(&acpi_generic_error_notifiers,
+ &vms->generic_error_notifier);
} else {
create_gpio_devices(vms, VIRT_GPIO, sysmem);
}
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index c8e94e6aedc9..f3cf28436770 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -176,6 +176,7 @@ struct VirtMachineState {
DeviceState *gic;
DeviceState *acpi_dev;
Notifier powerdown_notifier;
+ Notifier generic_error_notifier;
PCIBus *bus;
char *oem_id;
char *oem_table_id;
--
2.48.1