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2019-06-04block: Add BlockBackend.ctxKevin Wolf
This adds a new parameter to blk_new() which requires its callers to declare from which AioContext this BlockBackend is going to be used (or the locks of which AioContext need to be taken anyway). The given context is only stored and kept up to date when changing AioContexts. Actually applying the stored AioContext to the root node is saved for another commit. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-01hmp: delvm: use hmp_handle_errorCole Robinson
This gives us the consistent 'Error:' prefix added in 66363e9a43f, which helps users like libvirt who still need to scrape hmp error messages to detect failure. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Cole Robinson <crobinso@redhat.com> Message-Id: <984634226fa14316641f31f84e7dd0bb770bd94c.1556141033.git.crobinso@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-04-18block/qapi: Clean up how we print to monitor or stdoutMarkus Armbruster
bdrv_snapshot_dump(), bdrv_image_info_specific_dump(), bdrv_image_info_dump() and their helpers take an fprintf()-like callback and a FILE * to pass to it. hmp.c passes monitor_printf() cast to fprintf_function and the current monitor cast to FILE *. qemu-img.c and qemu-io-cmds.c pass fprintf and stdout. The type-punning is technically undefined behaviour, but works in practice. Clean up: drop the callback, and call qemu_printf() instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-8-armbru@redhat.com>
2019-04-05migration: Fix migrate_set_parameterJuan Quintela
Otherwise we are setting err twice, what is wrong and causes an abort. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-Id: <20190403114958.3705-2-quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-03-25migration: add support for a "tls-authz" migration parameterDaniel P. Berrange
The QEMU instance that runs as the server for the migration data transport (ie the target QEMU) needs to be able to configure access control so it can prevent unauthorized clients initiating an incoming migration. This adds a new 'tls-authz' migration parameter that is used to provide the QOM ID of a QAuthZ subclass instance that provides the access control check. This is checked against the x509 certificate obtained during the TLS handshake. For example, when starting a QEMU for incoming migration, it is possible to give an example identity of the source QEMU that is intended to be connecting later: $QEMU \ -monitor stdio \ -incoming defer \ ...other args... (qemu) object_add tls-creds-x509,id=tls0,dir=/home/berrange/qemutls,\ endpoint=server,verify-peer=yes \ (qemu) object_add authz-simple,id=auth0,identity=CN=laptop.example.com,,\ O=Example Org,,L=London,,ST=London,,C=GB \ (qemu) migrate_incoming tcp:localhost:9000 Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-25multifd: Drop x-Juan Quintela
We make it supported from now on. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-25multifd: Drop x-multifd-page-count parameterJuan Quintela
Libvirt don't want to expose (and explain it). From now on we measure the number of packages in bytes instead of pages, so it is the same independently of architecture. We choose the page size of x86. Notice that in the following patch we make this variable. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-16{hmp, hw/pvrdma}: Expose device internals via monitor interfaceYuval Shaia
Allow interrogating device internals through HMP interface. The exposed indicators can be used for troubleshooting by developers or sysadmin. There is no need to expose these attributes to a management system (e.x. libvirt) because (1) most of them are not "device-management' related info and (2) there is no guarantee the interface is stable. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1552300155-25216-6-git-send-email-yuval.shaia@oracle.com> Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
2019-03-06nbd: allow authorization with nbd-server-start QMP commandDaniel P. Berrange
As with the previous patch to qemu-nbd, the nbd-server-start QMP command also needs to be able to specify authorization when enabling TLS encryption. First the client must create a QAuthZ object instance using the 'object-add' command: { 'execute': 'object-add', 'arguments': { 'qom-type': 'authz-list', 'id': 'authz0', 'parameters': { 'policy': 'deny', 'rules': [ { 'match': '*CN=fred', 'policy': 'allow' } ] } } } They can then reference this in the new 'tls-authz' parameter when executing the 'nbd-server-start' command: { 'execute': 'nbd-server-start', 'arguments': { 'addr': { 'type': 'inet', 'host': '127.0.0.1', 'port': '9000' }, 'tls-creds': 'tls0', 'tls-authz': 'authz0' } } Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <20190227162035.18543-3-berrange@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
2019-03-06migration: Create socket-address parameterJuan Quintela
It will be used to store the uri parameters. We want this only for tcp, so we don't set it for other uris. We need it to know what port is migration running. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> dgilbert: Removed DummyStruct as suggested by Eric & Markus --
2019-03-05hmp: Add hmp_announce_selfDr. David Alan Gilbert
Add an HMP command to trigger self annocements. Unlike the QMP command (which takes a set of parameters), the HMP command reuses the set of parameters used for migration. Signend-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-03-05migration: Add announce parametersDr. David Alan Gilbert
Add migration parameters that control RARP/GARP announcement timeouts. Based on earlier patches by myself and Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-02-14Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/trivial-branch-pull-request' into staging - some configure updates (HAX/NetBSD, remove "wav", -Waddress-of-packed-member) - remove deprecated options - some trace and error cleanup - typo fixes # gpg: Signature made Thu 14 Feb 2019 10:46:50 GMT # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full] # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/trivial-branch-pull-request: configure: improve usbfs check hw/sparc64: Explicitly set default_display = "std" hw/dma/i8257: Use qemu_log_mask(UNIMP) instead of fprintf wavcapture: Convert to error_report kvm: Add kvm_set_ioeventfd* traces HMP: Prepend errors with 'Error:' pckbd: Convert DPRINTF->trace configure: Make -Waddress-of-packed-member warnings be errors configure: Add HAX support in NetBSD configure: fix qemu-img name configure: remove handling of "wav" audio driver qemu-options: Remove deprecated option -clock qemu-deprecated: Remove -virtioconsole and -no-frame for good qapi: Fix qcow2 encryption doc typo Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-14HMP: Prepend errors with 'Error:'Dr. David Alan Gilbert
Always make error messages start with 'Error:' as a fallback to make sure that anything parsing them can tell it failed. Note: Some places don't use hmp_handle_error Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <20190212134758.10514-3-dgilbert@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-02-13char: allow specifying a GMainContext at opening timePaolo Bonzini
This will be needed by vhost-user-test, when each test switches to its own GMainLoop and GMainContext. Otherwise, for a reconnecting socket the initial connection will happen on the default GMainContext, and no one will be listening on it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20190202110834.24880-1-pbonzini@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2019-01-23migration: introduce pages-per-secondXiao Guangrong
It introduces a new statistic, pages-per-second, as bandwidth or mbps is not enough to measure the performance of posting pages out as we have compression, xbzrle, which can significantly reduce the amount of the data size, instead, pages-per-second is the one we want Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com> Message-Id: <20190111063732.10484-2-xiaoguangrong@tencent.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> With typo's Eric spotted fixed
2019-01-14nbd: Allow bitmap export during QMP nbd-server-addEric Blake
With the experimental x-nbd-server-add-bitmap command, there was a window of time where an NBD client could see the export but not the associated dirty bitmap, which can cause a client that planned on using the dirty bitmap to be forced to treat the entire image as dirty as a safety fallback. Furthermore, if the QMP client successfully exports a disk but then fails to add the bitmap, it has to take on the burden of removing the export. Since we don't allow changing the exposed dirty bitmap (whether to a different bitmap, or removing advertisement of the bitmap), it is nicer to make the bitmap tied to the export at the time the export is created, with automatic failure to export if the bitmap is not available. The experimental command included an optional 'bitmap-export-name' field for remapping the name exposed over NBD to be different from the bitmap name stored on disk. However, my libvirt demo code for implementing differential backups on top of persistent bitmaps did not need to take advantage of that feature (it is instead possible to create a new temporary bitmap with the desired name, use block-dirty-bitmap-merge to merge one or more persistent bitmaps into the temporary, then associate the temporary with the NBD export, if control is needed over the exported bitmap name). Hence, I'm not copying that part of the experiment over to the stable addition. For more details on the libvirt demo, see https://www.redhat.com/archives/libvir-list/2018-October/msg01254.html, https://kvmforum2018.sched.com/event/FzuB/facilitating-incremental-backup-eric-blake-red-hat This patch focuses on the user interface, and reduces (but does not completely eliminate) the window where an NBD client can see the export but not the dirty bitmap, with less work to clean up after errors. Later patches will add further cleanups now that this interface is declared stable via a single QMP command, including removing the race window. Update test 223 to use the new interface. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20190111194720.15671-6-eblake@redhat.com>
2018-12-18qmp hmp: Make system_wakeup check wake-up support and run stateDaniel Henrique Barboza
The qmp/hmp command 'system_wakeup' is simply a direct call to 'qemu_system_wakeup_request' from vl.c. This function verifies if runstate is SUSPENDED and if the wake up reason is valid before proceeding. However, no error or warning is thrown if any of those pre-requirements isn't met. There is no way for the caller to differentiate between a successful wakeup or an error state caused when trying to wake up a guest that wasn't suspended. This means that system_wakeup is silently failing, which can be considered a bug. Adding error handling isn't an API break in this case - applications that didn't check the result will remain broken, the ones that check it will have a chance to deal with it. Adding to that, the commit before previous created a new QMP API called query-current-machine, with a new flag called wakeup-suspend-support, that indicates if the guest has the capability of waking up from suspended state. Although such guest will never reach SUSPENDED state and erroring it out in this scenario would suffice, it is more informative for the user to differentiate between a failure because the guest isn't suspended versus a failure because the guest does not have support for wake up at all. All this considered, this patch changes qmp_system_wakeup to check if the guest is capable of waking up from suspend, and if it is suspended. After this patch, this is the output of system_wakeup in a guest that does not have wake-up from suspend support (ppc64): (qemu) system_wakeup wake-up from suspend is not supported by this guest (qemu) And this is the output of system_wakeup in a x86 guest that has the support but isn't suspended: (qemu) system_wakeup Unable to wake up: guest is not in suspended state (qemu) Reported-by: Balamuruhan S <bala24@linux.vnet.ibm.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20181205194701.17836-4-danielhb413@gmail.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-11Deprecate HMP `cpu-add`Kashyap Chamarthy
Since we're deprecating the QMP `cpu-add`, let's deprecate its HMP equivalent, too. Suggested-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com> Message-Id: <20181030123526.26415-3-kchamart@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-10-11qmp, hmp: make subsystem/system-vendor identities optionalDenis V. Lunev
According to PCI specification, subsystem id and subsystem vendor id are present only in type 0 and type 2 headers (at different offsets), but not in type 1 headers. Thus we should make this data optional in struct PciDeviceId and skip reporting them via HMP if the information is not available. Additional (wrong information) about PCI bridges (Type1 devices) has been added in 5383a705 and fortunately not released. This patch fixes that problem. The problem was spotted by Markus. Signed-off-by: Denis V. Lunev <den@openvz.org> CC: "Dr. David Alan Gilbert" <dgilbert@redhat.com> CC: Eric Blake <eblake@redhat.com> CC: Markus Armbruster <armbru@redhat.com> Message-Id: <20181002135538.12113-1-den@openvz.org> Reported-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-09-26migration: show the statistics of compressionXiao Guangrong
Currently, it includes: pages: amount of pages compressed and transferred to the target VM busy: amount of count that no free thread to compress data busy-rate: rate of thread busy compressed-size: amount of bytes after compression compression-rate: rate of compressed size Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com> Message-Id: <20180906070101.27280-3-xiaoguangrong@tencent.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-09-25Merge remote-tracking branch 'remotes/xanclic/tags/pull-block-2018-09-25' ↵Peter Maydell
into staging Block layer patches: - Drain fixes - node-name parameters for block-commit - Refactor block jobs to use transactional callbacks for exiting # gpg: Signature made Tue 25 Sep 2018 16:12:44 BST # gpg: using RSA key F407DB0061D5CF40 # gpg: Good signature from "Max Reitz <mreitz@redhat.com>" # Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40 * remotes/xanclic/tags/pull-block-2018-09-25: (42 commits) test-bdrv-drain: Test draining job source child and parent block: Use a single global AioWait test-bdrv-drain: Fix outdated comments test-bdrv-drain: AIO_WAIT_WHILE() in job .commit/.abort job: Avoid deadlocks in job_completed_txn_abort() test-bdrv-drain: Test nested poll in bdrv_drain_poll_top_level() block: Remove aio_poll() in bdrv_drain_poll variants blockjob: Lie better in child_job_drained_poll() block-backend: Decrease in_flight only after callback block-backend: Fix potential double blk_delete() block-backend: Add .drained_poll callback block: Add missing locking in bdrv_co_drain_bh_cb() test-bdrv-drain: Test AIO_WAIT_WHILE() in completion callback job: Use AIO_WAIT_WHILE() in job_finish_sync() test-blockjob: Acquire AioContext around job_cancel_sync() test-bdrv-drain: Drain with block jobs in an I/O thread aio-wait: Increase num_waiters even in home thread blockjob: Wake up BDS when job becomes idle job: Fix missing locking due to mismerge job: Fix nested aio_poll() hanging in job_txn_apply ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-09-25qmp, hmp: add PCI subsystem id and vendor id to PCI infoDenis V. Lunev
This is a long story. Red Hat has relicensed Windows KVM device drivers in 2018 and there was an agreement that to avoid WHQL driver conflict software manufacturers should set proper PCI subsystem vendor ID in their distributions. Thus PCI subsystem vendor id becomes actively used. The problem is that this field is applied by us via hardware compats. Thus technically it could be lost. This patch adds PCI susbsystem id and vendor id to exportable parameters for validation. Signed-off-by: Denis V. Lunev <den@openvz.org> CC: "Dr. David Alan Gilbert" <dgilbert@redhat.com> CC: Eric Blake <eblake@redhat.com> CC: Markus Armbruster <armbru@redhat.com> Message-Id: <20180918095852.28422-1-den@openvz.org> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-09-25hmp: fix migrate status timer leakMarc-André Lureau
Spotted by ASAN doing some manual testing: Direct leak of 48 byte(s) in 1 object(s) allocated from: #0 0x7f5fcdc75e50 in calloc (/lib64/libasan.so.5+0xeee50) #1 0x7f5fcd47241d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5241d) #2 0x55f989be92ce in timer_new /home/elmarco/src/qq/include/qemu/timer.h:561 #3 0x55f989be92ff in timer_new_ms /home/elmarco/src/qq/include/qemu/timer.h:630 #4 0x55f989c0219d in hmp_migrate /home/elmarco/src/qq/hmp.c:2038 #5 0x55f98955927b in handle_hmp_command /home/elmarco/src/qq/monitor.c:3498 #6 0x55f98955fb8c in monitor_command_cb /home/elmarco/src/qq/monitor.c:4371 #7 0x55f98ad40f11 in readline_handle_byte /home/elmarco/src/qq/util/readline.c:393 #8 0x55f98955fa4f in monitor_read /home/elmarco/src/qq/monitor.c:4354 #9 0x55f98aae30d7 in qemu_chr_be_write_impl /home/elmarco/src/qq/chardev/char.c:175 #10 0x55f98aae317a in qemu_chr_be_write /home/elmarco/src/qq/chardev/char.c:187 #11 0x55f98aae940c in fd_chr_read /home/elmarco/src/qq/chardev/char-fd.c:66 #12 0x55f98ab63018 in qio_channel_fd_source_dispatch /home/elmarco/src/qq/io/channel-watch.c:84 #13 0x7f5fcd46c8ac in g_main_dispatch gmain.c:3177 Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180901134652.25884-1-marcandre.lureau@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-09-25qapi/block-stream: expose new job propertiesJohn Snow
Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20180906130225.5118-15-jsnow@redhat.com Reviewed-by: Jeff Cody <jcody@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-08-24Merge remote-tracking branch ↵Peter Maydell
'remotes/juanquintela/tags/migration/20180822-1' into staging migration/next for 20180822 # gpg: Signature made Wed 22 Aug 2018 12:07:59 BST # gpg: using RSA key F487EF185872D723 # gpg: Good signature from "Juan Quintela <quintela@redhat.com>" # gpg: aka "Juan Quintela <quintela@trasno.org>" # Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723 * remotes/juanquintela/tags/migration/20180822-1: migration: hold the lock only if it is really needed migration: move handle of zero page to the thread migration: drop the return value of do_compress_ram_page migration: introduce save_zero_page_to_file migration: fix counting normal page for compression migration: do not wait for free thread migration: poll the cm event for destination qemu tests/migration-test: Silence the kvm_hv message by default migration: implement the shutdown for RDMA QIOChannel migration: poll the cm event while wait RDMA work request completion migration: invoke qio_channel_yield only when qemu_in_coroutine() migration: implement io_set_aio_fd_handler function for RDMA QIOChannel migration: Stop rdma yielding during incoming postcopy migration: implement bi-directional RDMA QIOChannel migration: create a dedicated connection for rdma return path migration: disable RDMA WRITE after postcopy started migrate/cpu-throttle: Add max-cpu-throttle migration parameter docs/migration: Clarify pre_load in subsections migration: Correctly handle subsections with no 'needed' function qapi/migration.json: fix the description for "query-migrate" output Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-08-23hmp-commands: add sync-profileEmilio G. Cota
The command introduced here is just for developers. This means that: - the interface implemented here could change in the future - the command is only meant to be used from HMP, not from QMP Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-08-22migration: do not wait for free threadXiao Guangrong
Instead of putting the main thread to sleep state to wait for free compression thread, we can directly post it out as normal page that reduces the latency and uses CPUs more efficiently A parameter, compress-wait-thread, is introduced, it can be enabled if the user really wants the old behavior Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-08-22migrate/cpu-throttle: Add max-cpu-throttle migration parameterLi Qiang
Currently, the default maximum CPU throttle for migration is 99(CPU_THROTTLE_PCT_MAX). This is too big and can make a remarkable performance effect for the guest. We see a lot of packets latency exceed 500ms when the CPU_THROTTLE_PCT_MAX reached. This patch set adds a new max-cpu-throttle parameter to limit the CPU throttle. Signed-off-by: Li Qiang <liq3ea@gmail.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-07-16cli qmp: Mark --preconfig, exit-preconfig experimentalMarkus Armbruster
Committing to the current --preconfig / exit-preconfig interface before it has seen any use is premature. Mark both as experimental, the former in documentation, the latter by renaming it to x-exit-preconfig. See the previous commit for more detailed rationale. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180705091402.26244-3-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Igor Mammedov <imammedo@redhat.com> [Straightforward conflict with commit 514337c142f resolved]
2018-07-03qapi: add conditions to VNC type/commands/events on the schemaMarc-André Lureau
Add #if defined(CONFIG_VNC) in generated code, and adjust the qmp/hmp code accordingly. query-qmp-schema no longer reports the command/events etc as available when disabled at compile. Commands made conditional: * query-vnc, query-vnc-servers, change-vnc-password Before the patch, the commands for !CONFIG_VNC are stubs that fail like this: {"error": {"class": "GenericError", "desc": "The feature 'vnc' is not enabled"}} Afterwards, they fail like this: {"error": {"class": "CommandNotFound", "desc": "The command FOO has not been found"}} I call that an improvement, because it lets clients distinguish between command unavailable (class CommandNotFound) and command failed (class GenericError). Events made conditional: * VNC_CONNECTED, VNC_INITIALIZED, VNC_DISCONNECTED HMP change: * info vnc Will return "unknown command: 'info vnc'" when VNC is compiled out (same as error for spice when --disable-spice) Occurrences of VNC (case insensitive) in the schema that aren't covered by this change: * add_client Command has other uses, including "socket bases character devices". These are unconditional as far as I can tell. * set_password, expire_password In theory, these commands could be used for managing any service's password. In practice, they're used for VNC and SPICE services. They're documented for "remote display session" / "remote display server". The service is selected by argument @protocol. The code special-cases protocol-specific argument checking, then calls a protocol-specific function to do the work. If it fails, the command fails with "Could not set password". It does when the service isn't compiled in (it's a stub then). We could make these commands conditional on the conjunction of all services [currently: defined(CONFIG_VNC) || defined(CONFIG_SPICE)], but I doubt it's worthwhile. * change Command has other uses, namely changing media. This patch inlines a stub; no functional change. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180703155648.11933-14-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-06-29Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into stagingPeter Maydell
The Darwin host support still needs some more work. It won't make it for soft-freeze, but I'd like these preparatory patches to be merged anyway. # gpg: Signature made Fri 29 Jun 2018 11:39:04 BST # gpg: using RSA key 71D4D5E5822F73D6 # gpg: Good signature from "Greg Kurz <groug@kaod.org>" # gpg: aka "Gregory Kurz <gregory.kurz@free.fr>" # gpg: aka "[jpeg image of size 3330]" # Primary key fingerprint: B482 8BAF 9431 40CE F2A3 4910 71D4 D5E5 822F 73D6 * remotes/gkurz/tags/for-upstream: 9p: darwin: Explicitly cast comparisons of mode_t with -1 cutils: Provide strchrnul Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29dump: add Windows dump format to dump-guest-memoryViktor Prutyanov
This patch adds Windows crashdumping feature. Now QEMU can produce ELF-dump containing Windows crashdump header, which can help to convert to a valid WinDbg-understandable crashdump file, or immediately create such file. The crashdump will be obtained by joining physical memory dump and 8K header exposed through vmcoreinfo/fw_cfg device by guest driver at BSOD time. Option '-w' was added to dump-guest-memory command. At the moment, only x64 configuration is supported. Suitable driver can be found at https://github.com/virtio-win/kvm-guest-drivers-windows/tree/master/fwcfg64 Signed-off-by: Viktor Prutyanov <viktor.prutyanov@virtuozzo.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180517162342.4330-2-viktor.prutyanov@virtuozzo.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-29cutils: Provide strchrnulKeno Fischer
strchrnul is a GNU extension and thus unavailable on a number of targets. In the review for a commit removing strchrnul from 9p, I was asked to create a qemu_strchrnul helper to factor out this functionality. Do so, and use it in a number of other places in the code base that inlined the replacement pattern in a place where strchrnul could be used. Signed-off-by: Keno Fischer <keno@juliacomputing.com> Acked-by: Greg Kurz <groug@kaod.org> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Greg Kurz <groug@kaod.org>
2018-06-27migration: Create multifd_bytes ram_counterJuan Quintela
This will include how many bytes they are sent through multifd. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-06-21hmp: add exit_preconfigDr. David Alan Gilbert
Add the exit_preconfig command to return to normality. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <20180620153947.30834-7-dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-06-15migration/postcopy: Add max-postcopy-bandwidth parameterDr. David Alan Gilbert
Limit the background transfer bandwidth during the postcopy phase to the value set on this new parameter. The default, 0, corresponds to the existing behaviour which is unlimited bandwidth. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20180613102642.23995-2-dgilbert@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-05-15migration/hmp: add migrate_pause commandPeter Xu
Wrapper for QMP command "migrate-pause". Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180502104740.12123-25-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-05-15hmp/migration: add migrate_recover commandPeter Xu
Sister command to migrate-recover in QMP. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180502104740.12123-22-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-05-15qmp: hmp: add migrate "resume" optionPeter Xu
It will be used when we want to resume one paused migration. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180502104740.12123-8-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> --- s/2.12/2.13/
2018-05-15hmp: Allow using a qdev id in block_set_io_throttleAlberto Garcia
The QMP version of this command can take a qdev ID since 7a9877a02635, but the HMP version is still using the deprecated block device name so there's no way to refer to a block device added like this: -blockdev node-name=disk0,driver=qcow2,file.driver=file,file.filename=hd.qcow2 -device virtio-blk-pci,id=virtio-blk-pci0,drive=disk0 This patch works around this problem by using the specified name as a qdev ID if the block device name is not found. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-04-25migration: add postcopy total blocktime into query-migrateAlexey Perevalov
Postcopy total blocktime is available on destination side only. But query-migrate was possible only for source. This patch adds ability to call query-migrate on destination. To be able to see postcopy blocktime, need to request postcopy-blocktime capability. The query-migrate command will show following sample result: {"return": "postcopy-vcpu-blocktime": [115, 100], "status": "completed", "postcopy-blocktime": 100 }} postcopy_vcpu_blocktime contains list, where the first item is the first vCPU in QEMU. This patch has a drawback, it combines states of incoming and outgoing migration. Ongoing migration state will overwrite incoming state. Looks like better to separate query-migrate for incoming and outgoing migration or add parameter to indicate type of migration. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Message-Id: <1521742647-25550-7-git-send-email-a.perevalov@samsung.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-03-27hmp.c: Revert hmp_info_cpus output format changeSatheesh Rajendran
Commit 137b5cb6 refactored 'info cpus' output, changing 'thread_id' to 'thread-id'. While HMP is not a stable interface, it is trivial to keep the spelling consistent for test frameworks that have not yet updated to using QMP. This patch just reverts back output format to 'thread_id'. CC: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com> Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Message-Id: <20180327123800.28851-1-sathnaga@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> [eblake: improve commit message] Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-20Merge remote-tracking branch 'remotes/dgilbert/tags/pull-hmp-20180320' into ↵Peter Maydell
staging HMP fixes for 2.12 # gpg: Signature made Tue 20 Mar 2018 12:39:24 GMT # gpg: using RSA key 0516331EBC5BFDE7 # gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" # Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7 * remotes/dgilbert/tags/pull-hmp-20180320: hmp: free sev info HMP: Initialize err before using Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-20HMP: Initialize err before usingzhangjixiang
When bdrv_snapshot_delete return fail, the errp will not be assigned a valid value in error_propagate as errp didn't be initialized in hmp_delvm, then error_reportf_err will use an uninitialized value(call by hmp_delvm), and qemu crash. Signed-off-by: zhangjixiang <jixiang_zhang@h3c.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-03-20qmp: distinguish PC-DIMM and NVDIMM in MemoryDeviceInfoListHaozhong Zhang
It may need to treat PC-DIMM and NVDIMM differently, e.g., when deciding the necessity of non-volatile flag bit in SRAT memory affinity structures. A new field 'nvdimm' is added to the union type MemoryDeviceInfo for such purpose. Its type is currently PCDIMMDeviceInfo and will be updated when necessary in the future. It also fixes "info memory-devices"/query-memory-devices which currently show nvdimm devices as dimm devices since object_dynamic_cast(obj, TYPE_PC_DIMM) happily cast nvdimm to TYPE_PC_DIMM which it's been inherited from. Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-12qapi: Add device ID and head parameters to screendumpThomas Huth
QEMU's screendump command can only take dumps from the primary display. When using multiple VGA cards, there is no way to get a dump from a secondary card or other display heads yet. So let's add a 'device' and a 'head' parameter to the HMP and QMP commands to be able to specify alternative devices and heads with the screendump command, too. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1520267868-31778-1-git-send-email-thuth@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-03-02qapi: Move qapi-schema.json to qapi/, rename generated filesMarkus Armbruster
Move qapi-schema.json to qapi/, so it's next to its modules, and all files get generated to qapi/, not just the ones generated for modules. Consistently name the generated files qapi-MODULE.EXT: qmp-commands.[ch] become qapi-commands.[ch], qapi-event.[ch] become qapi-events.[ch], and qmp-introspect.[ch] become qapi-introspect.[ch]. This gets rid of the temporary hacks in scripts/qapi/commands.py, scripts/qapi/events.py, and scripts/qapi/common.py. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-28-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> [eblake: Fix trailing dot in tpm.c, undo temporary hack for OSX toolchain] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02qapi: Empty out qapi-schema.jsonMarkus Armbruster
The previous commit improved compile time by including less of the generated QAPI headers. This is impossible for stuff defined directly in qapi-schema.json, because that ends up in headers that that pull in everything. Move everything but include directives from qapi-schema.json to new sub-module qapi/misc.json, then include just the "misc" shard where possible. It's possible everywhere, except: * monitor.c needs qmp-command.h to get qmp_init_marshal() * monitor.c, ui/vnc.c and the generated qapi-event-FOO.c need qapi-event.h to get enum QAPIEvent Perhaps we'll get rid of those some other day. Adding a type to qapi/migration.json now recompiles some 120 instead of 2300 out of 5100 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-25-armbru@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02Include less of the generated modular QAPI headersMarkus Armbruster
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-11 08:53:46 +0000