On 05/17/2016 05:43 PM, Igor Mammedov wrote:
add necessary wiring to init new CPU hotplug hardware
if ICH9-LPC.cpu-hotplug-legacy is "off".
Set ICH9-LPC.cpu-hotplug-legacy to "off" by default and
switch legacy hotplug to enabled only for 2.6 and older
machine types.
Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
v1:
- drop ICH9-LPC.cpu-hotplug property
---
hw/acpi/ich9.c | 42 +++++++++++++++++++++++++++++++++++++-----
include/hw/acpi/ich9.h | 6 +++++-
include/hw/compat.h | 6 +++++-
3 files changed, 47 insertions(+), 7 deletions(-)
diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
index 121e30c..b0285b9 100644
--- a/hw/acpi/ich9.c
+++ b/hw/acpi/ich9.c
@@ -170,6 +170,24 @@ static const VMStateDescription vmstate_memhp_state = {
}
};
+static bool vmstate_test_use_cpuhp(void *opaque)
+{
+ ICH9LPCPMRegs *s = opaque;
+ return !s->cpu_hotplug_legacy;
+}
+
+static const VMStateDescription vmstate_cpuhp_state = {
+ .name = "ich9_pm/cpuhp",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .needed = vmstate_test_use_cpuhp,
+ .fields = (VMStateField[]) {
+ VMSTATE_CPU_HOTPLUG(cpuhp.state, ICH9LPCPMRegs),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static bool vmstate_test_use_tco(void *opaque)
{
ICH9LPCPMRegs *s = opaque;
@@ -209,6 +227,7 @@ const VMStateDescription vmstate_ich9_pm = {
.subsections = (const VMStateDescription*[]) {
&vmstate_memhp_state,
&vmstate_tco_io_state,
+ &vmstate_cpuhp_state,
NULL
}
};
@@ -275,7 +294,10 @@ void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm,
if (pm->cpu_hotplug_legacy) {
legacy_acpi_cpu_hotplug_init(pci_address_space_io(lpc_pci),
- OBJECT(lpc_pci), &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE);
+ OBJECT(lpc_pci), &pm->cpuhp.legacy, ICH9_CPU_HOTPLUG_IO_BASE);
+ } else {
+ cpu_hotplug_hw_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci),
+ &pm->cpuhp.state, ICH9_CPU_HOTPLUG_IO_BASE);
}
if (pm->acpi_memory_hotplug.is_enabled) {
@@ -414,7 +436,6 @@ void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm,
Error **errp)
{
static const uint32_t gpe0_len = ICH9_PMIO_GPE0_LEN;
pm->acpi_memory_hotplug.is_enabled = true;
- pm->cpu_hotplug_legacy = true;
Maybe is too soon to disable legacy CPU hotplug? Will the new cpu hotplug
mechanism
work from this patch on, or it will break git bisect?
Thanks,
Marcel
pm->disable_s3 = 0;
pm->disable_s4 = 0;
pm->s4_val = 2;
@@ -461,9 +482,13 @@ void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev,
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
dev, errp);
- } else if (lpc->pm.cpu_hotplug_legacy &&
- object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
- legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
+ if (lpc->pm.cpu_hotplug_legacy) {
+ legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp.legacy, dev,
+ errp);
+ } else {
+ acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.cpuhp.state, dev, errp);
+ }
} else {
error_setg(errp, "acpi: device plug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
@@ -480,6 +505,10 @@ void ich9_pm_device_unplug_request_cb(HotplugHandler
*hotplug_dev,
acpi_memory_unplug_request_cb(hotplug_dev,
&lpc->pm.acpi_memory_hotplug, dev,
errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
+ !lpc->pm.cpu_hotplug_legacy) {
+ acpi_cpu_unplug_request_cb(hotplug_dev, &lpc->pm.cpuhp.state,
+ dev, errp);
} else {
error_setg(errp, "acpi: device unplug request for not supported
device"
" type: %s", object_get_typename(OBJECT(dev)));
@@ -494,6 +523,9 @@ void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev,
if (lpc->pm.acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
+ !lpc->pm.cpu_hotplug_legacy) {
+ acpi_cpu_unplug_cb(&lpc->pm.cpuhp.state, dev, errp);
} else {
error_setg(errp, "acpi: device unplug for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h
index e29a856..198c017 100644
--- a/include/hw/acpi/ich9.h
+++ b/include/hw/acpi/ich9.h
@@ -23,6 +23,7 @@
#include "hw/acpi/acpi.h"
#include "hw/acpi/cpu_hotplug.h"
+#include "hw/acpi/cpu.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/acpi/acpi_dev_interface.h"
#include "hw/acpi/tco.h"
@@ -49,7 +50,10 @@ typedef struct ICH9LPCPMRegs {
Notifier powerdown_notifier;
bool cpu_hotplug_legacy;
- AcpiCpuHotplug gpe_cpu;
+ union {
+ AcpiCpuHotplug legacy; /* used for keeping legacy state */
+ CPUHotplugState state;
+ } cpuhp;
MemHotplugState acpi_memory_hotplug;
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 636befe..a65d9d2 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -2,7 +2,11 @@
#define HW_COMPAT_H
#define HW_COMPAT_2_6 \
- /* empty */
+ {\
+ .driver = "ICH9-LPC",\
+ .property = "cpu-hotplug-legacy",\
+ .value = "on",\
+ },\
#define HW_COMPAT_2_5 \
{\
