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Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machi
From: |
David Hildenbrand |
Subject: |
Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code |
Date: |
Tue, 26 May 2020 09:36:10 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 |
On 26.05.20 09:35, David Hildenbrand wrote:
> On 25.05.20 17:06, Philippe Mathieu-Daudé wrote:
>> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
>> ---
>> qapi/machine.json | 90 ++++++++++++++++++++++++++++++++++++++
>> qapi/misc.json | 90 --------------------------------------
>> include/sysemu/balloon.h | 2 +-
>> balloon.c | 2 +-
>> hw/virtio/virtio-balloon.c | 2 +-
>> monitor/hmp-cmds.c | 1 +
>> 6 files changed, 94 insertions(+), 93 deletions(-)
>>
>> diff --git a/qapi/machine.json b/qapi/machine.json
>> index ca7d58f0c9..ae42d69495 100644
>> --- a/qapi/machine.json
>> +++ b/qapi/machine.json
>> @@ -921,3 +921,93 @@
>> 'data': 'NumaOptions',
>> 'allow-preconfig': true
>> }
>> +
>> +##
>> +# @balloon:
>> +#
>> +# Request the balloon driver to change its balloon size.
>> +#
>> +# @value: the target logical size of the VM in bytes
>> +# We can deduce the size of the balloon using this formula:
>> +# logical_vm_size = vm_ram_size - balloon_size
>> +# From it we have: balloon_size = vm_ram_size - @value
>> +#
>> +# Returns: - Nothing on success
>> +# - If the balloon driver is enabled but not functional because
>> the KVM
>> +# kernel module cannot support it, KvmMissingCap
>> +# - If no balloon device is present, DeviceNotActive
>> +#
>> +# Notes: This command just issues a request to the guest. When it returns,
>> +# the balloon size may not have changed. A guest can change the
>> balloon
>> +# size independent of this command.
>> +#
>> +# Since: 0.14.0
>> +#
>> +# Example:
>> +#
>> +# -> { "execute": "balloon", "arguments": { "value": 536870912 } }
>> +# <- { "return": {} }
>> +#
>> +# With a 2.5GiB guest this command inflated the ballon to 3GiB.
>> +#
>> +##
>> +{ 'command': 'balloon', 'data': {'value': 'int'} }
>> +
>> +##
>> +# @BalloonInfo:
>> +#
>> +# Information about the guest balloon device.
>> +#
>> +# @actual: the logical size of the VM in bytes
>> +# Formula used: logical_vm_size = vm_ram_size - balloon_size
>> +#
>> +# Since: 0.14.0
>> +#
>> +##
>> +{ 'struct': 'BalloonInfo', 'data': {'actual': 'int' } }
>> +
>> +##
>> +# @query-balloon:
>> +#
>> +# Return information about the balloon device.
>> +#
>> +# Returns: - @BalloonInfo on success
>> +# - If the balloon driver is enabled but not functional because
>> the KVM
>> +# kernel module cannot support it, KvmMissingCap
>> +# - If no balloon device is present, DeviceNotActive
>> +#
>> +# Since: 0.14.0
>> +#
>> +# Example:
>> +#
>> +# -> { "execute": "query-balloon" }
>> +# <- { "return": {
>> +# "actual": 1073741824,
>> +# }
>> +# }
>> +#
>> +##
>> +{ 'command': 'query-balloon', 'returns': 'BalloonInfo' }
>> +
>> +##
>> +# @BALLOON_CHANGE:
>> +#
>> +# Emitted when the guest changes the actual BALLOON level. This value is
>> +# equivalent to the @actual field return by the 'query-balloon' command
>> +#
>> +# @actual: the logical size of the VM in bytes
>> +# Formula used: logical_vm_size = vm_ram_size - balloon_size
>> +#
>> +# Note: this event is rate-limited.
>> +#
>> +# Since: 1.2
>> +#
>> +# Example:
>> +#
>> +# <- { "event": "BALLOON_CHANGE",
>> +# "data": { "actual": 944766976 },
>> +# "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
>> +#
>> +##
>> +{ 'event': 'BALLOON_CHANGE',
>> + 'data': { 'actual': 'int' } }
>> diff --git a/qapi/misc.json b/qapi/misc.json
>> index 446fc8ff83..26b5115638 100644
>> --- a/qapi/misc.json
>> +++ b/qapi/misc.json
>> @@ -186,65 +186,6 @@
>> { 'command': 'query-iothreads', 'returns': ['IOThreadInfo'],
>> 'allow-preconfig': true }
>>
>> -##
>> -# @BalloonInfo:
>> -#
>> -# Information about the guest balloon device.
>> -#
>> -# @actual: the logical size of the VM in bytes
>> -# Formula used: logical_vm_size = vm_ram_size - balloon_size
>> -#
>> -# Since: 0.14.0
>> -#
>> -##
>> -{ 'struct': 'BalloonInfo', 'data': {'actual': 'int' } }
>> -
>> -##
>> -# @query-balloon:
>> -#
>> -# Return information about the balloon device.
>> -#
>> -# Returns: - @BalloonInfo on success
>> -# - If the balloon driver is enabled but not functional because
>> the KVM
>> -# kernel module cannot support it, KvmMissingCap
>> -# - If no balloon device is present, DeviceNotActive
>> -#
>> -# Since: 0.14.0
>> -#
>> -# Example:
>> -#
>> -# -> { "execute": "query-balloon" }
>> -# <- { "return": {
>> -# "actual": 1073741824,
>> -# }
>> -# }
>> -#
>> -##
>> -{ 'command': 'query-balloon', 'returns': 'BalloonInfo' }
>> -
>> -##
>> -# @BALLOON_CHANGE:
>> -#
>> -# Emitted when the guest changes the actual BALLOON level. This value is
>> -# equivalent to the @actual field return by the 'query-balloon' command
>> -#
>> -# @actual: the logical size of the VM in bytes
>> -# Formula used: logical_vm_size = vm_ram_size - balloon_size
>> -#
>> -# Note: this event is rate-limited.
>> -#
>> -# Since: 1.2
>> -#
>> -# Example:
>> -#
>> -# <- { "event": "BALLOON_CHANGE",
>> -# "data": { "actual": 944766976 },
>> -# "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
>> -#
>> -##
>> -{ 'event': 'BALLOON_CHANGE',
>> - 'data': { 'actual': 'int' } }
>> -
>> ##
>> # @PciMemoryRange:
>> #
>> @@ -753,37 +694,6 @@
>> ##
>> { 'command': 'inject-nmi' }
>>
>> -##
>> -# @balloon:
>> -#
>> -# Request the balloon driver to change its balloon size.
>> -#
>> -# @value: the target logical size of the VM in bytes
>> -# We can deduce the size of the balloon using this formula:
>> -# logical_vm_size = vm_ram_size - balloon_size
>> -# From it we have: balloon_size = vm_ram_size - @value
>> -#
>> -# Returns: - Nothing on success
>> -# - If the balloon driver is enabled but not functional because
>> the KVM
>> -# kernel module cannot support it, KvmMissingCap
>> -# - If no balloon device is present, DeviceNotActive
>> -#
>> -# Notes: This command just issues a request to the guest. When it returns,
>> -# the balloon size may not have changed. A guest can change the
>> balloon
>> -# size independent of this command.
>> -#
>> -# Since: 0.14.0
>> -#
>> -# Example:
>> -#
>> -# -> { "execute": "balloon", "arguments": { "value": 536870912 } }
>> -# <- { "return": {} }
>> -#
>> -# With a 2.5GiB guest this command inflated the ballon to 3GiB.
>> -#
>> -##
>> -{ 'command': 'balloon', 'data': {'value': 'int'} }
>> -
>> ##
>> # @human-monitor-command:
>> #
>> diff --git a/include/sysemu/balloon.h b/include/sysemu/balloon.h
>> index aea0c44985..b3de4b92b9 100644
>> --- a/include/sysemu/balloon.h
>> +++ b/include/sysemu/balloon.h
>> @@ -15,7 +15,7 @@
>> #define QEMU_BALLOON_H
>>
>> #include "exec/cpu-common.h"
>> -#include "qapi/qapi-types-misc.h"
>> +#include "qapi/qapi-types-machine.h"
>>
>> typedef void (QEMUBalloonEvent)(void *opaque, ram_addr_t target);
>> typedef void (QEMUBalloonStatus)(void *opaque, BalloonInfo *info);
>> diff --git a/balloon.c b/balloon.c
>> index f104b42961..ee9c59252d 100644
>> --- a/balloon.c
>> +++ b/balloon.c
>> @@ -30,7 +30,7 @@
>> #include "sysemu/balloon.h"
>> #include "trace-root.h"
>> #include "qapi/error.h"
>> -#include "qapi/qapi-commands-misc.h"
>> +#include "qapi/qapi-commands-machine.h"
>> #include "qapi/qmp/qerror.h"
>>
>> static QEMUBalloonEvent *balloon_event_fn;
>> diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
>> index 065cd450f1..ec3aac1e80 100644
>> --- a/hw/virtio/virtio-balloon.c
>> +++ b/hw/virtio/virtio-balloon.c
>> @@ -24,7 +24,7 @@
>> #include "hw/virtio/virtio-balloon.h"
>> #include "exec/address-spaces.h"
>> #include "qapi/error.h"
>> -#include "qapi/qapi-events-misc.h"
>> +#include "qapi/qapi-events-machine.h"
>> #include "qapi/visitor.h"
>> #include "trace.h"
>> #include "qemu/error-report.h"
>> diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
>> index 9c61e769ca..376590c073 100644
>> --- a/monitor/hmp-cmds.c
>> +++ b/monitor/hmp-cmds.c
>> @@ -32,6 +32,7 @@
>> #include "qapi/qapi-commands-block.h"
>> #include "qapi/qapi-commands-char.h"
>> #include "qapi/qapi-commands-control.h"
>> +#include "qapi/qapi-commands-machine.h"
>> #include "qapi/qapi-commands-migration.h"
>> #include "qapi/qapi-commands-misc.h"
>> #include "qapi/qapi-commands-net.h"
>>
>
> Reviewed-by: David Hildenbrand <address@hidden>
>
> I yet have to craft a patch to fixup the wrong documentation :)
>
Oh, I see you already included a fixup, nice!
--
Thanks,
David / dhildenb
- Re: [PATCH v3 1/9] target/i386: Restrict X86CPUFeatureWord to X86 targets, (continued)
[PATCH v3 2/9] qapi/misc: Restrict LostTickPolicy enum to machine code, Philippe Mathieu-Daudé, 2020/05/25
[PATCH v3 3/9] qapi/misc.json: Correct balloon documentation, Philippe Mathieu-Daudé, 2020/05/25
[PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Philippe Mathieu-Daudé, 2020/05/25
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, David Hildenbrand, 2020/05/26
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code,
David Hildenbrand <=
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Markus Armbruster, 2020/05/26
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Philippe Mathieu-Daudé, 2020/05/26
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Markus Armbruster, 2020/05/26
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Philippe Mathieu-Daudé, 2020/05/26
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Philippe Mathieu-Daudé, 2020/05/26
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Markus Armbruster, 2020/05/27
- Re: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code, Philippe Mathieu-Daudé, 2020/05/27
[PATCH v3 5/9] qapi/misc: Restrict query-vm-generation-id command to machine code, Philippe Mathieu-Daudé, 2020/05/25
[PATCH v3 6/9] qapi/misc: Move query-uuid command to machine code, Philippe Mathieu-Daudé, 2020/05/25