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[Qemu-devel] [PATCH v3 04/10] acpi, mem-hotplug: Add unplug request cb f
From: |
Zhu Guihua |
Subject: |
[Qemu-devel] [PATCH v3 04/10] acpi, mem-hotplug: Add unplug request cb for memory device. |
Date: |
Thu, 26 Feb 2015 09:16:46 +0800 |
From: Tang Chen <address@hidden>
Memory hot unplug are both asynchronize procedures.
When the unplug operation happens, unplug request cb is called first.
And when ghest OS finished handling unplug, unplug cb will be called
to do the real removal of device.
This patch adds unplug request cb for memory device. Add a new bool
member named is_removing to MemStatus indicating that the memory slot
is being removed. Set it to true in acpi_memory_unplug_request_cb(),
and send SCI to guest.
Signed-off-by: Tang Chen <address@hidden>
Signed-off-by: Zhu Guihua <address@hidden>
---
hw/acpi/memory_hotplug.c | 17 +++++++++++++++++
include/hw/acpi/memory_hotplug.h | 4 ++++
2 files changed, 21 insertions(+)
diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
index 5b13baa..02231d2 100644
--- a/hw/acpi/memory_hotplug.c
+++ b/hw/acpi/memory_hotplug.c
@@ -206,6 +206,23 @@ void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq,
MemHotplugState *mem_st,
acpi_send_gpe_event(ar, irq, ACPI_MEMORY_HOTPLUG_STATUS);
}
+void acpi_memory_unplug_request_cb(ACPIREGS *ar, qemu_irq irq,
+ MemHotplugState *mem_st,
+ DeviceState *dev, Error **errp)
+{
+ MemStatus *mdev;
+
+ mdev = acpi_memory_slot_status(mem_st, dev, errp);
+ if (!mdev) {
+ return;
+ }
+
+ mdev->is_removing = true;
+
+ /* Do ACPI magic */
+ acpi_send_gpe_event(ar, irq, ACPI_MEMORY_HOTPLUG_STATUS);
+}
+
static const VMStateDescription vmstate_memhp_sts = {
.name = "memory hotplug device state",
.version_id = 1,
diff --git a/include/hw/acpi/memory_hotplug.h b/include/hw/acpi/memory_hotplug.h
index 7bbf8a0..c437a85 100644
--- a/include/hw/acpi/memory_hotplug.h
+++ b/include/hw/acpi/memory_hotplug.h
@@ -11,6 +11,7 @@ typedef struct MemStatus {
DeviceState *dimm;
bool is_enabled;
bool is_inserting;
+ bool is_removing;
uint32_t ost_event;
uint32_t ost_status;
} MemStatus;
@@ -28,6 +29,9 @@ void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
DeviceState *dev, Error **errp);
+void acpi_memory_unplug_request_cb(ACPIREGS *ar, qemu_irq irq,
+ MemHotplugState *mem_st,
+ DeviceState *dev, Error **errp);
extern const VMStateDescription vmstate_memory_hotplug;
#define VMSTATE_MEMORY_HOTPLUG(memhp, state) \
--
1.9.3
- [Qemu-devel] [PATCH v3 00/10] QEMU memory hot unplug support, Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 01/10] acpi, mem-hotplug: Use PC_DIMM_SLOT_PROP in acpi_memory_plug_cb()., Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 03/10] acpi, mem-hotplug: Add acpi_send_gpe_event() to rise sci for memory hotplug., Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 02/10] acpi, mem-hotplug: Add acpi_memory_slot_status() to get MemStatus., Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 04/10] acpi, mem-hotplug: Add unplug request cb for memory device.,
Zhu Guihua <=
- [Qemu-devel] [PATCH v3 06/10] acpi, mem-hotplug: Add unplug cb for memory device., Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 05/10] ich9, piix4, pc-dimm: Add memory hot unplug request support, Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 08/10] qdev: make qdev_get_hotplug_handler() non-static, Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 07/10] ich9, piix4, pc-dimm: Add memory hot unplug support, Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 09/10] ssdt-mem: add MEMORY_SLOT_EJECT_METHOD, Zhu Guihua, 2015/02/25
- [Qemu-devel] [PATCH v3 10/10] acpi: Add hardware implementation for memory hot unplug., Zhu Guihua, 2015/02/25