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[Qemu-devel] [RESEND PATCH v1 04/13] acpi, mem-hotplug: Add unplug reque
From: |
Tang Chen |
Subject: |
[Qemu-devel] [RESEND PATCH v1 04/13] acpi, mem-hotplug: Add unplug request cb for memory device. |
Date: |
Thu, 8 Jan 2015 09:06:11 +0800 |
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>
---
hw/acpi/memory_hotplug.c | 16 ++++++++++++++++
include/hw/acpi/memory_hotplug.h | 4 ++++
2 files changed, 20 insertions(+)
diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
index 9839963..3d8e398 100644
--- a/hw/acpi/memory_hotplug.c
+++ b/hw/acpi/memory_hotplug.c
@@ -211,6 +211,22 @@ void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq,
MemHotplugState *mem_st,
acpi_memory_hotplug_sci(ar, irq);
}
+void acpi_memory_unplug_request_cb(ACPIREGS *ar, qemu_irq irq,
+ MemHotplugState *mem_st,
+ DeviceState *dev, Error **errp)
+{
+ MemStatus *mdev;
+
+ mdev = acpi_memory_get_slot_status_descriptor(mem_st, dev, errp);
+ if (!mdev)
+ return;
+
+ mdev->is_removing = true;
+
+ /* Do ACPI magic */
+ acpi_memory_hotplug_sci(ar, irq);
+}
+
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) \
--
1.8.4.2
- [Qemu-devel] [RESEND PATCH v1 00/13] QEmu memory hot unplug support., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 01/13] acpi, mem-hotplug: Use PC_DIMM_SLOT_PROP in acpi_memory_plug_cb()., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 02/13] acpi, mem-hotplug: Add acpi_memory_get_slot_status_descriptor() to get MemStatus., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 03/13] acpi, mem-hotplug: Add acpi_memory_hotplug_sci() to rise sci for memory hotplug., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 04/13] acpi, mem-hotplug: Add unplug request cb for memory device.,
Tang Chen <=
- [Qemu-devel] [RESEND PATCH v1 05/13] acpi, piix4: Add memory hot unplug request support for piix4., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 06/13] acpi, ich9: Add memory hot unplug request support for ich9., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 08/13] acpi, mem-hotplug: Add unplug cb for memory device., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 07/13] pc-dimm: Add memory hot unplug request support for pc-dimm., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 09/13] acpi, piix4: Add memory hot unplug support for piix4., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 10/13] acpi, ich9: Add memory hot unplug support for ich9., Tang Chen, 2015/01/07
- [Qemu-devel] [RESEND PATCH v1 11/13] pc-dimm: Add memory hot unplug support for pc-dimm., Tang Chen, 2015/01/07