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2013-03-28vl: add runstate_set tracepointKazuya Saito2-1/+2
This patch enables us to know RunState transition. It will be userful for investigation when the trouble occured in special event such like live migration, shutdown, suspend, and so on. Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28.gitignore: rename trace/generated-tracers.dtraceStefan Hajnoczi1-1/+1
For a while the file was called trace/generated-tracers-dtrace.dtrace but today it's called trace/generated-tracers.dtrace. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28.gitignore: add trace/generated-events.[ch]Stefan Hajnoczi1-0/+2
Don't display autogenerated files in git-status(1). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: rebuild generated-events.o when configuration changesStefan Hajnoczi1-1/+1
Make sure to rebuild generated-events.o when ./configure options change. This prevents linker errors when a stale generated-events.o gets linked with code compiled against fresh headers. For example, try building with ./configure --enable-trace-backend=stderr followed by ./configure --enable-trace-backend=dtrace. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: [stderr] Port to generic event information and new control interfaceLluís Vilanova3-58/+14
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: [simple] Port to generic event information and new control interfaceLluís Vilanova3-46/+13
The backend is forced to dump event numbers using 64 bits, as TraceEventID is an enum. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: [default] Port to generic event information and new control interfaceLluís Vilanova1-3/+2
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: [monitor] Use new event control interfaceLluís Vilanova1-2/+11
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: Provide a detailed event control interfaceLluís Vilanova4-58/+349
This interface decouples event obtaining from interaction. Events can be obtained through three different methods: * identifier * name * simple wildcard pattern Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: Provide a generic tracing event descriptorLluís Vilanova7-9/+172
Uses tracetool to generate a backend-independent tracing event description (struct TraceEvent). The values for such structure are generated with the non-public "events" backend ("events-c" frontend). The generation of the defines to check if an event is statically enabled is also moved to the "events" backend ("events-h" frontend). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28trace: [tracetool] Explicitly identify public backendsLluís Vilanova6-3/+30
Public backends are those printed by "--list-backends" and thus considered valid by the configure script. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28block: Fix direct use of protocols as driver for bdrv_open()Kevin Wolf1-11/+15
bdrv_open_common() implements direct use of protocols by copying the pre-opened BlockDriverStates to bs using bdrv_swap(). It did however first set some fields in bs, which end up in file after the swap. When bdrv_open() destroys file, it appears to be open, and because it isn't, qemu could segfault while trying to close it. Reorder the operations to return immediately in such cases so that file is correctly detected as closed. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Gather clusters in a looping loopKevin Wolf2-32/+44
Instead of just checking once in exactly this order if there are dependendies, non-COW clusters and new allocation, this starts looping around these. This way we can, for example, gather non-COW clusters after new allocations as long as the host cluster offsets stay contiguous. Once handle_dependencies() is extended so that COW areas of in-flight allocations can be overwritten, this allows to continue with gathering other clusters (we wouldn't be able to do that without this change because we would have missed a possible second dependency in one of the next clusters). This means that in the typical sequential write case, we can combine the COW overwrite of one cluster with the allocation of the next cluster as soon as something like Delayed COW gets actually implemented. It is only by avoiding splitting requests this way that Delayed COW actually starts improving performance noticably. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Move cluster gathering to a non-looping loopKevin Wolf1-64/+70
This patch is mainly to separate the indentation change from the semantic changes. All that really changes here is that everything moves into a while loop, all 'goto done' become 'break' and at the end of the loop a new 'break is inserted. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Allow requests with multiple l2metasKevin Wolf3-3/+17
Instead of expecting a single l2meta, have a list of them. This allows to still have a single I/O request for the guest data, even though multiple l2meta may be needed in order to describe both a COW overwrite and a new cluster allocation (typical sequential write case). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Use byte granularity in qcow2_alloc_cluster_offset()Kevin Wolf1-56/+28
This gets rid of the nb_clusters and keep_clusters and the associated complicated calculations. Just advance the number of bytes that have been processed and everything is fine. This patch advances the variables even after the last operation even though they aren't used any more afterwards to make things look more uniform. A later patch will turn the whole thing into a loop and then it actually starts making sense. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Prepare handle_alloc/copied() for byte granularityKevin Wolf1-9/+16
This makes handle_alloc() and handle_copied() return byte-granularity host offsets instead of returning always the cluster start. This is required so that qcow2_alloc_cluster_offset() can stop aligning everything to cluster boundaries. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: handle_copied(): Implement non-zero host_offsetKevin Wolf1-8/+20
Look only for clusters that start at a given physical offset. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: handle_copied(): Get rid of keep_clusters parameterKevin Wolf1-10/+13
Now *bytes is used to return the length of the area that can be written to without performing an allocation or COW. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: handle_copied(): Get rid of nb_clusters parameterKevin Wolf1-6/+18
handle_copied() uses its bytes parameter now to determine how many clusters it should try to find. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Factor out handle_copied()Kevin Wolf2-40/+95
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Clean up handle_alloc()Kevin Wolf1-57/+53
Things can be simplified a bit now. No semantic changes. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Finalise interface of handle_alloc()Kevin Wolf2-13/+21
The interface works completely on a byte granularity now and duplicated parameters are removed. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: handle_alloc(): Get rid of keep_clusters parameterKevin Wolf2-17/+32
handle_alloc() is now called with the offset at which the actual new allocation starts instead of the offset at which the whole write request starts, part of which may already be processed. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: handle_alloc(): Get rid of nb_clusters parameterKevin Wolf1-4/+15
We already communicate the same information in *bytes. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Factor out handle_alloc()Kevin Wolf2-89/+152
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Decouple cluster allocation from cluster reuse codeKevin Wolf1-15/+20
This moves some code that prepares the allocation of new clusters to where the actual allocation happens. This is the minimum required to be able to move it to a separate function in the next patch. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Change handle_dependency to byte granularityKevin Wolf2-12/+39
This is a more precise description of what really constitutes a dependency. The behaviour doesn't change at this point because the COW area of the old request is still aligned to cluster boundaries and therefore an overlap is detected wheneven the requests touch any part of the same cluster. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Improve check for overlapping allocationsKevin Wolf2-6/+6
The old code detected an overlapping allocation even when the allocations didn't actually overlap, but were only adjacent. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Handle dependencies earlierKevin Wolf2-16/+48
Handling overlapping allocations isn't just a detail of cluster allocation. It is rather one of three ways to get the host cluster offset for a write request: 1. If a request overlaps an in-flight allocations, the cluster offset can be taken from there (this is what handle_dependencies will evolve into) or the request must just wait until the allocation has completed. Accessing the L2 is not valid in this case, it has outdated information. 2. Outside overlapping areas, check the clusters that can be written to as they are, with no COW involved. 3. If a COW is required, allocate new clusters Changing the code to reflect this doesn't change the behaviour because overlaps cannot exist for clusters that are kept in step 2. It does however make it easier for later patches to work on clusters that belong to an allocation that is still in flight. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Remove bogus unlock of s->lockKevin Wolf1-2/+0
The unlock wakes up the next coroutine, but the currently running coroutine will lock it again before it yields, so this doesn't make a lot of sense. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Fix "total clusters" number in bdrv_checkKevin Wolf2-2/+4
This should be based on the virtual disk size, not on the size of the image. Interesting observation: With some VM state stored in the image file, percentages higher than 100% are possible, even though snapshots themselves are ignored. This is a qcow2 bug to be fixed another day: The VM state should be discarded in the active L2 tables after completing the snapshot creation. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qemu-iotests: More concurrent allocation scenariosKevin Wolf2-1/+124
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28vl.c: call bdrv_init_with_whitelist() before cmdline parsingPeter Lieven1-2/+2
commit 4d454574 "qemu-option: move standard option definitions out of qemu-config.c" broke support for commandline option groups that where registered during bdrv_init(). In particular support for -iscsi options was broken since that commit. Fix by moving the bdrv_init_with_whitelist() before command line argument parsing. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28hw/tcx: Remove unused 'addr' field and the property that sets itPeter Maydell2-3/+0
Remove the 'addr' field from TCXState (since it is completely unused), also the qdev property which sets it. This seems to be a relic from many years past; devices don't need to know where they are mapped. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28hw/i386/pc: format load_linux functionliguang1-53/+56
Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28configure: show debug-info option in --help outputDunrong Huang1-0/+2
"--enable-debug-info" and "--disable-debug-info" were not shown in --help output. Signed-off-by: Dunrong Huang <huangdr@cloud-times.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-27spice-qemu-char: Drop hackish vmc_register on spice_chr_writeHans de Goede1-1/+0
Now that the core takes care of fe_open tracking we no longer need this hack. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-12-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27virtio-serial: propagate guest_connected to the port on post_loadAlon Levy1-0/+5
When migrating a host with with a spice agent running the mouse becomes non operational after the migration due to the agent state being inconsistent between the guest and the client. After migration the spicevmc backend on the destination has never been notified of the (non 0) guest_connected state. Virtio-serial holds this state information and migrates it, this patch properly propagates this information to virtio-console and through that to interested chardev backends. rhbz #725965 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-11-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27virtio-serial: Consolidate guest_open/guest_close into set_guest_connectedHans de Goede3-32/+12
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-10-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: add_handlers: Don't re-send the be_open event on unregisterHans de Goede1-1/+1
Resending the be_open event only is useful when a frontend is registering, not when it is unregistering. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-9-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Move incrementing of avail_connections to qdev-properties-systemHans de Goede2-4/+4
The decrement of avail_connections is done in qdev-properties-system move the increment there too for proper balancing of the calls. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-8-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Consolidate guest_close/guest_open into a set_fe_open callbackHans de Goede3-19/+11
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-7-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Cleanup: consolidate fe_open/fe_close into fe_set_openHans de Goede3-33/+12
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-6-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Automatically do fe_open / fe_close on qemu_chr_add_handlersHans de Goede4-2/+15
Most frontends can't really determine if the guest actually has the frontend side open. So lets automatically generate fe_open / fe_close as soon as a frontend becomes ready (as signalled by calling qemu_chr_add_handlers) / becomes non ready (as signalled by setting all handlers to NULL). And allow frontends which can actually determine if the guest is listening to opt-out of this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-5-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Add fe_open trackingHans de Goede2-0/+9
Add tracking of the fe_open state to struct CharDriverState. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-4-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Rename qemu_chr_generic_open to qemu_chr_be_generic_openHans de Goede5-16/+16
To better reflect that it is for handling a backend being opened. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-3-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27qemu-char: Rename opened to be_openHans de Goede5-8/+8
Rename the opened variable to be_open to reflect that it contains the opened state of the backend. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Message-id: 1364292483-16564-2-git-send-email-hdegoede@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-27compiler: fix warning with GCC 4.8.0Paolo Bonzini1-1/+1
GCC 4.8.0 introduces a new warning: block/qcow2-snapshot.c: In function 'qcow2_write_snapshots’: block/qcow2-snapshot.c:252:18: error: typedef 'qemu_build_bug_on__253' locally defined but not used [-Werror=unused-local-typedefs] QEMU_BUILD_BUG_ON(offsetof(QCowHeader, snapshots_offset) != ^ cc1: all warnings being treated as errors (Caret diagnostics aren't perfect yet with macros... :)) Work around it with __attribute__((unused)). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1364391272-1128-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-26Merge remote-tracking branch 'mst/tags/for_anthony' into stagingAnthony Liguori39-131/+348
virtio,pci,qom Work by Alex to support VGA assignment, pci and virtio fixes by Stefan, Jason and myself, and a new qmp event for hotplug support by myself. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 26 Mar 2013 02:02:24 PM CDT using RSA key ID D28D5469 # gpg: Can't check signature: public key not found # By Alex Williamson (13) and others # Via Michael S. Tsirkin * mst/tags/for_anthony: (23 commits) pcie: Add endpoint capability initialization wrapper roms: switch oldnoconfig to olddefconfig pcie: Mangle types to match topology pci: Create and use API to determine root buses pci: Create pci_bus_is_express helper pci: Q35, Root Ports, and Switches create PCI Express buses pci: Allow PCI bus creation interfaces to specify the type of bus pci: Move PCI and PCIE type defines pci: Create and register a new PCI Express TypeInfo exec: assert that RAMBlock size is non-zero pci: refuse empty ROM files pci_bridge: Remove duplicate IRQ swizzle function pci_bridge: Use a default map_irq function pci: Fix INTx routing notifier recursion pci_bridge: drop formatting from source pci_bridge: factor out common code pci: Teach PCI Bridges about VGA routing pci: Add PCI VGA helpers virtio-pci: guest notifier mask without non-irqfd virtio-net: remove layout assumptions for mq ctrl ...
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