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[88.21.204.71]) by smtp.gmail.com with ESMTPSA id zk10sm15742658ejb.9.2020.05.25.08.07.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 May 2020 08:07:07 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v3 4/9] qapi/misc: Restrict balloon-related commands to machine code Date: Mon, 25 May 2020 17:06:35 +0200 Message-Id: <20200525150640.30879-5-philmd@redhat.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200525150640.30879-1-philmd@redhat.com> References: <20200525150640.30879-1-philmd@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8; text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=philmd@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/25 01:44:10 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Ben Warren , David Hildenbrand , Markus Armbruster , "Michael S. Tsirkin" , Peter Lieven , "Dr. David Alan Gilbert" , Eduardo Habkost , Max Reitz , Ronnie Sahlberg , Igor Mammedov , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-block@nongnu.org, Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Philippe Mathieu-Daudé --- 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" -- 2.21.3