From: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
To: <qemu-devel@nongnu.org>, <qemu-arm@nongnu.org>,
<eric.auger@redhat.com>, <imammedo@redhat.com>
Cc: peter.maydell@linaro.org, sameo@linux.intel.com,
ard.biesheuvel@linaro.org, linuxarm@huawei.com,
xuwei5@hisilicon.com, shannon.zhaosl@gmail.com,
sebastien.boeuf@intel.com, lersek@redhat.com
Subject: [Qemu-devel] [PATCH-for-4.2 v9 04/12] hw/arm/virt: Add memory hotplug framework
Date: Tue, 13 Aug 2019 22:05:31 +0100 [thread overview]
Message-ID: <20190813210539.31164-5-shameerali.kolothum.thodi@huawei.com> (raw)
In-Reply-To: <20190813210539.31164-1-shameerali.kolothum.thodi@huawei.com>
From: Eric Auger <eric.auger@redhat.com>
This patch adds the memory hot-plug/hot-unplug infrastructure
in machvirt. The device memory is not yet exposed to the Guest
either through DT or ACPI and hence both cold/hot plug of memory
is explicitly disabled for now.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Kwangwoo Lee <kwangwoo.lee@sk.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
---
v8 --> v9
-Added error propagation.
---
hw/arm/Kconfig | 2 ++
hw/arm/virt.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 54 insertions(+), 1 deletion(-)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index ab65ecd216..84961c17ab 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -20,6 +20,8 @@ config ARM_VIRT
select SMBIOS
select VIRTIO_MMIO
select ACPI_PCI
+ select MEM_DEVICE
+ select DIMM
config CHEETAH
bool
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index d9496c9363..72cde9deba 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -64,6 +64,8 @@
#include "hw/arm/smmuv3.h"
#include "hw/acpi/acpi.h"
#include "target/arm/internals.h"
+#include "hw/mem/pc-dimm.h"
+#include "hw/mem/nvdimm.h"
#define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
@@ -1871,6 +1873,42 @@ static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms)
return ms->possible_cpus;
}
+static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
+ Error **errp)
+{
+
+ /*
+ * The device memory is not yet exposed to the Guest either through
+ * DT or ACPI and hence both cold/hot plug of memory is explicitly
+ * disabled for now.
+ */
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ error_setg(errp, "memory cold/hot plug is not yet supported");
+ return;
+ }
+
+ pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp);
+}
+
+static void virt_memory_plug(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
+ Error *local_err = NULL;
+
+ pc_dimm_plug(PC_DIMM(dev), MACHINE(vms), &local_err);
+
+ error_propagate(errp, local_err);
+}
+
+static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ virt_memory_pre_plug(hotplug_dev, dev, errp);
+ }
+}
+
static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@@ -1882,12 +1920,23 @@ static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev,
SYS_BUS_DEVICE(dev));
}
}
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ virt_memory_plug(hotplug_dev, dev, errp);
+ }
+}
+
+static void virt_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ error_setg(errp, "device unplug request for unsupported device"
+ " type: %s", object_get_typename(OBJECT(dev)));
}
static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
- if (object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE)) {
+ if (object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE) ||
+ (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM))) {
return HOTPLUG_HANDLER(machine);
}
@@ -1951,7 +2000,9 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
mc->kvm_type = virt_kvm_type;
assert(!mc->get_hotplug_handler);
mc->get_hotplug_handler = virt_machine_get_hotplug_handler;
+ hc->pre_plug = virt_machine_device_pre_plug_cb;
hc->plug = virt_machine_device_plug_cb;
+ hc->unplug_request = virt_machine_device_unplug_request_cb;
mc->numa_mem_supported = true;
}
--
2.17.1
next prev parent reply other threads:[~2019-08-13 21:09 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-13 21:05 [Qemu-devel] [PATCH-for-4.2 v9 00/12] ARM virt: ACPI memory hotplug support Shameer Kolothum
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 01/12] hw/acpi: Make ACPI IO address space configurable Shameer Kolothum
2019-08-15 8:42 ` Shameerali Kolothum Thodi
2019-08-29 8:45 ` Igor Mammedov
2019-08-29 11:04 ` Shameerali Kolothum Thodi
2019-08-29 12:38 ` Igor Mammedov
2019-08-29 13:45 ` Shameerali Kolothum Thodi
2019-09-01 11:17 ` Auger Eric
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 02/12] hw/acpi: Do not create memory hotplug method when handler is not defined Shameer Kolothum
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 03/12] hw/acpi: Add ACPI Generic Event Device Support Shameer Kolothum
2019-09-01 11:17 ` Auger Eric
2019-08-13 21:05 ` Shameer Kolothum [this message]
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 05/12] hw/arm/virt: Add 4.2 machine type Shameer Kolothum
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 06/12] hw/arm/virt: Enable device memory cold/hot plug with ACPI boot Shameer Kolothum
2019-09-01 11:18 ` Auger Eric
2019-09-01 11:22 ` Auger Eric
2019-09-02 9:34 ` Shameerali Kolothum Thodi
2019-09-02 9:21 ` Shameerali Kolothum Thodi
2019-09-02 9:32 ` Auger Eric
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 07/12] hw/arm/virt-acpi-build: Add PC-DIMM in SRAT Shameer Kolothum
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 08/12] hw/arm: Factor out powerdown notifier from GPIO Shameer Kolothum
2019-09-02 7:37 ` Auger Eric
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 09/12] hw/arm: Use GED for system_powerdown event Shameer Kolothum
2019-09-02 7:37 ` Auger Eric
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 10/12] docs/specs: Add ACPI GED documentation Shameer Kolothum
2019-09-01 11:20 ` Auger Eric
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 11/12] tests: add dummy ACPI tables for arm/virt board Shameer Kolothum
2019-08-13 21:05 ` [Qemu-devel] [PATCH-for-4.2 v9 12/12] tests: Add bios tests to arm/virt Shameer Kolothum
2019-08-14 6:46 ` [Qemu-devel] [PATCH-for-4.2 v9 00/12] ARM virt: ACPI memory hotplug support no-reply
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