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[Qemu-devel] [PATCH RFC for-2.3 1/6] qga: introduce three guest memory b
From: |
zhanghailiang |
Subject: |
[Qemu-devel] [PATCH RFC for-2.3 1/6] qga: introduce three guest memory block commands with stubs |
Date: |
Sat, 6 Dec 2014 14:59:14 +0800 |
Introduce three new guest commands:
guest-get-memory-blocks, guest-set-memory-blocks, guest-get-memory-block-size.
With these three commands, we can support online/offline guest's memory block
(logical memory hotplug/unplug) as required from host.
Signed-off-by: zhanghailiang <address@hidden>
---
qga/commands-posix.c | 19 ++++++++++++
qga/commands-win32.c | 19 ++++++++++++
qga/qapi-schema.json | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 126 insertions(+)
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index f6f3e3c..b0d6a5d 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -1996,6 +1996,25 @@ GList *ga_command_blacklist_init(GList *blacklist)
return blacklist;
}
+GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
+{
+ error_set(errp, QERR_UNSUPPORTED);
+ return NULL;
+}
+
+int64_t qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks,
+ Error **errp)
+{
+ error_set(errp, QERR_UNSUPPORTED);
+ return -1;
+}
+
+int64_t qmp_guest_get_memory_block_size(Error **errp)
+{
+ error_set(errp, QERR_UNSUPPORTED);
+ return -1;
+}
+
/* register init/cleanup routines for stateful command groups */
void ga_command_state_init(GAState *s, GACommandState *cs)
{
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 3bcbeae..b53b679 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -446,6 +446,25 @@ int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList
*vcpus, Error **errp)
return -1;
}
+GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
+{
+ error_set(errp, QERR_UNSUPPORTED);
+ return NULL;
+}
+
+int64_t qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks,
+ Error **errp)
+{
+ error_set(errp, QERR_UNSUPPORTED);
+ return -1;
+}
+
+int64_t qmp_guest_get_memory_block_size(Error **errp)
+{
+ error_set(errp, QERR_UNSUPPORTED);
+ return -1;
+}
+
/* add unsupported commands to the blacklist */
GList *ga_command_blacklist_init(GList *blacklist)
{
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 376e79f..4b81769 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -738,3 +738,91 @@
##
{ 'command': 'guest-get-fsinfo',
'returns': ['GuestFilesystemInfo'] }
+
+##
+# @GuestMemoryBlock:
+#
+# @phys_index: Arbitrary guest-specific unique identifier of the MEMORY BLOCK.
+#
+# @online: Whether the MEMORY BLOCK is enabled in logically.
+#
+# @can-offline: #optional Whether offlining the MEMORY BLOCK is possible.
This member
+# is always filled in by the guest agent when the structure is
+# returned, and always ignored on input (hence it can be omitted
+# then).
+#
+# Since: 2.3
+##
+{ 'type': 'GuestMemoryBlock',
+ 'data': {'phys_index': 'uint64',
+ 'online': 'bool',
+ '*can-offline': 'bool'} }
+
+##
+# @guest-get-memory-blocks:
+#
+# Retrieve the list of the guest's memory blocks.
+#
+# This is a read-only operation.
+#
+# Returns: The list of all memory blocks the guest knows about.
+# Each memory block is put on the list exactly once, but their order
+# is unspecified.
+#
+# Since: 2.3
+##
+{ 'command': 'guest-get-memory-blocks',
+ 'returns': ['GuestMemoryBlock'] }
+
+##
+# @guest-set-memory-blocks:
+#
+# Attempt to reconfigure (currently: enable/disable) state of memory blocks
+# inside the guest.
+#
+# The input list is processed node by node in order. In each node @phys_index
+# is used to look up the guest MEMORY BLOCK, for which @online specifies the
requested
+# state. The set of distinct @phys_index's is only required to be a subset of
+# the guest-supported identifiers. There's no restriction on list length or on
+# repeating the same @phys_index (with possibly different @online field).
+# Preferably the input list should describe a modified subset of
+# @guest-get-memory-blocks' return value.
+#
+# Returns: The length of the initial sublist that has been successfully
+# processed. The guest agent maximizes this value. Possible cases:
+#
+# 0: if the @mem-blks list was empty on input. Guest
state
+# has not been changed. Otherwise,
+#
+# Error: processing the first node of @mem-blks failed for
the
+# reason returned. Guest state has not been changed.
+# Otherwise,
+#
+# < length(@mem-blks): more than zero initial nodes have been
processed,
+# but not the entire @mem-blks list. Guest state has
+# changed accordingly. To retrieve the error
+# (assuming it persists), repeat the call with the
+# successfully processed initial sublist removed.
+# Otherwise,
+#
+# length(@mem-blks): call successful.
+#
+# Since: 2.3
+##
+{ 'command': 'guest-set-memory-blocks',
+ 'data': {'mem-blks': ['GuestMemoryBlock'] },
+ 'returns': 'int' }
+
+##
+# @guest-get-memory-block-size:
+#
+# Get the the size (in bytes) of a memory block in guest.
+# It is the unit of Memory online/offline operation (also called Logical
Memory Hotplug).
+#
+# Returns: memory block size in bytes.
+#
+# Since 2.3
+##
+{ 'command': 'guest-get-memory-block-size',
+ 'returns': 'int' }
+
--
1.7.12.4
- Re: [Qemu-devel] [PATCH RFC for-2.3 6/6] qga: add memory block command that unsupported to blacklist, (continued)
- [Qemu-devel] [PATCH RFC for-2.3 2/6] qga: introduce three help functions for memory block functions, zhanghailiang, 2014/12/06
- [Qemu-devel] [PATCH RFC for-2.3 4/6] qga: implement qmp_guest_set_memory_blocks() for Linux with sysfs, zhanghailiang, 2014/12/06
- [Qemu-devel] [PATCH RFC for-2.3 5/6] qga: implement qmp_guest_get_memory_block_size() for Linux with sysfs, zhanghailiang, 2014/12/06
- [Qemu-devel] [PATCH RFC for-2.3 1/6] qga: introduce three guest memory block commands with stubs,
zhanghailiang <=
- Re: [Qemu-devel] [PATCH RFC for-2.3 0/6] qga: add three logical memory hotplug related commands, zhanghailiang, 2014/12/11
- Re: [Qemu-devel] [PATCH RFC for-2.3 0/6] qga: add three logical memory hotplug related commands, zhanghailiang, 2014/12/17