[Qemu-devel] [PATCH v2 0/5] qga: add three logical memory hotplug related commands

[zhanghailiang]

This patch series add three guest commands about memory block:
guest-get-memory-blocks, guest-set-memory-blocks, guest-get-memory-block-size.

With these three commands, we can get information about guest's memory block
online/offline status and memory block size (unit of memory online/offline 
operation ). Also, we can change guest's memory block status (Logical memory
hotplug/unplug) from host.

Example of usage:

{"execute":"guest-get-memory-blocks"}
{"return":[{"online":true,"can-offline":false,"phys-index":0},{"online":true,"can-offline":true,"phys-index":1},{"online":true,"can-offline":false,"phys-index":2},{"online":true,"can-offline":false,"phys-index":3}]}

{"execute":"guest-set-memory-blocks","arguments":{"mem-blks":[{"phys-index":0,"online":false},{"phys-index":1,"online":false},{"phys-index":3,"online":false}]}}
{"return":[{"response":"operation-failed","error-code":22,"phys-index":0},{"response":"success","phys-index":1},{"response":"operation-failed","error-code":16,"phys-index":3}]}

{"execute":"guest-get-memory-block-size"}
{"return":134217728}

v2:
 - Change return value of 'guest-set-memory-blocks' command from 'int' to a list
   of 'GuestMemoryBlockResponse', which contains more info about the operation 
   results. It is suggested by Michael Roth. It is more useful for callers to 
   know the exact operation result for each memory block, and also they can help
   callers to decide what to do next according to different error-code.

zhanghailiang (5):
  qga: introduce three guest memory block commmands with stubs
  qga: implement qmp_guest_get_memory_blocks() for Linux with sysfs
  qga: implement qmp_guest_set_memory_blocks() for Linux with sysfs
  qga: implement qmp_guest_get_memory_block_size() for Linux with sysfs
  qga: add memory block command that unsupported to blacklist

 qga/commands-posix.c | 324 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 qga/commands-win32.c |  21 ++++
 qga/qapi-schema.json | 114 ++++++++++++++++++
 3 files changed, 458 insertions(+), 1 deletion(-)

-- 
1.7.12.4