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2011-11-11vl.c: prohibit simultaneous use of -icount with kvm or xenMax Filippov
With -icount, The vm_clock is updated with help from TCG (it counts instructions at 2^ICOUNT ns/instructions). With KVM, the instruction count is not available so KVM cannot provide this help. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-11vl.c: Fail gracefully if no machine is foundAndreas Färber
machine defaults to find_default_machine(), then gets overridden via -M and machine_parse(). If no -M is specified and find_default_machine() returns NULL (when no machine compiled in), exit with an error. Avoids a segfault when setting machine->max_cpus. Signed-off-by: Andreas Färber <andreas.faerber@web.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-09Clean up assertion in get_boot_devices_list()Markus Armbruster
g_strdup() can't fail, remove assertion. Assert its argument can't be null, because that's not obvious (add_boot_device_path() ensures it). Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-07qemu_timedate_diff() shouldn't modify its argument.Gleb Natapov
The caller of qemu_timedate_diff() does not expect that tm it passes to the function will be modified, but mktime() is destructive and modifies its argument. Pass a copy of tm to it and set tm_isdst so that mktime() will not rely on it since its value may be outdated. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-01vl.c: Guard against GThread double-initializationAndreas Färber
GThread-ERROR **: GThread system may only be initialized once. aborting... Making the g_thread_init() call in vl.c conditional resolves an abort on Mac OS X, where coroutine-gthread.c seems to call it before vl.c. Reported-by: Juan Pineda <juan@logician.com> Signed-off-by: Andreas Färber <andreas.faerber@web.de> Cc: Daniel P. Berrange <berrange@redhat.com>
2011-10-31Merge remote-tracking branch 'aneesh/for-upstream-7' into stagingAnthony Liguori
2011-10-31hw/9pfs: Add synthetic file system support using 9pAneesh Kumar K.V
This patch create a synthetic file system with mount tag v_synth when -virtfs_synth command line option is specified in qemu. The synthetic file system can be mounted in guest using 9p using the below command line mount -t 9p -oversion=9p2000.L,trans=virtio v_synth <mountpint> Synthetic file system enabled different qemu subsystem to register callbacks for read and write events from guest. The subsystem can create directories and files in the synthetic file system as show in ex below qemu_v9fs_synth_mkdir(NULL, 0777, "test2", &node); qemu_v9fs_synth_add_file(node, 0777, "testfile", my_test_read, NULL, NULL); Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-10-31hw/9pfs: Read-only support for 9p exportM. Mohan Kumar
A new fsdev parameter "readonly" is introduced to control accessing 9p export. "readonly" can be used to specify the access type. By default "rw" access is given to 9p export. Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-10-27Drop qemu-objects.h from modules that don't require itLuiz Capitulino
Previous commits dropped most qobjects usage from qemu modules (now they are a low level interface used by the QAPI). However, some modules still include the qemu-objects.h header file. This commit drops qemu-objects.h from some of those modules and includes qjson.h instead, which is what they actually need. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-21simplify main loop functionsPaolo Bonzini
Provide a clean example of how to use the main loop in the tools. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-21main-loop: create main-loop.cPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-21main-loop: create main-loop.hPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-21qemu-timer: move more stuff out of qemu-timer.cPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-21qemu-timer: use atexit for quit_timersPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-20Merge remote-tracking branch 'aneesh/for-upstream-6' into stagingAnthony Liguori
Conflicts: trace-events
2011-10-19runstate: Allow user to migrate twiceLuiz Capitulino
It should be a matter of allowing the transition POSTMIGRATE -> FINISH_MIGRATE, but it turns out that the VM won't do the transition the second time because it's already stopped. So this commit also adds vm_stop_force_state() which performs the transition even if the VM is already stopped. While there also allow other states to migrate. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-19runstate: Allow to transition from paused to postmigrateLuiz Capitulino
The user may already have paused the VM before starting the migration process. If s/he does that, then the state will be 'paused' when we finish the migration process. In that case we want to transition from 'paused' to 'postmigrate' as the latter is now the real reason why the VM is stopped. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-19runstate: Print state transition when invalidLuiz Capitulino
Makes it easier to debug. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-15Drop obsolete nographic timerJan Kiszka
We flush coalesced MMIO in the device models now, and VNC - for which this was once introduced - is also fine without it as it has its own refresh timer. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-10-15Move graphic-related coalesced MMIO flushes to affected device modelsJan Kiszka
This is conceptually cleaner and will allow us to drop the nographic timer. Moreover, it will be mandatory to fully exploit future per-device coalesced MMIO rings. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-10-15hw/9pfs: Handle Security model parsingM. Mohan Kumar
Except local fs driver all other fs drivers (handle, synth) don't need security model. Update fsdev parameter parsing accordingly. Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-10-15hw/9pfs: Rename fstype to fsdriver to make it consistent across VirtFS codeAneesh Kumar K.V
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-10-12hw/9pfs: Add new virtfs option writeout=immediate skip host page cacheAneesh Kumar K.V
writeout=immediate implies the after pwritev we do a sync_file_range. Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-10-04qapi: Convert query-statusLuiz Capitulino
Please, note that the RunState type as defined in sysemu.h and its runstate_as_string() function are being dropped in favor of the RunState type generated by the QAPI. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-04RunState: Rename enum values as generated by the QAPILuiz Capitulino
Next commit will convert the query-status command to use the RunState type as generated by the QAPI. In order to "transparently" replace the current enum by the QAPI one, we have to make some changes to some enum values. As the changes are simple renames, I'll do them in one shot. The changes are: - Rename the prefix from RSTATE_ to RUN_STATE_ - RUN_STATE_SAVEVM to RUN_STATE_SAVE_VM - RUN_STATE_IN_MIGRATE to RUN_STATE_INMIGRATE - RUN_STATE_PANICKED to RUN_STATE_INTERNAL_ERROR - RUN_STATE_POST_MIGRATE to RUN_STATE_POSTMIGRATE - RUN_STATE_PRE_LAUNCH to RUN_STATE_PRELAUNCH - RUN_STATE_PRE_MIGRATE to RUN_STATE_PREMIGRATE - RUN_STATE_RESTORE to RUN_STATE_RESTORE_VM - RUN_STATE_PRE_MIGRATE to RUN_STATE_FINISH_MIGRATE Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-04RunState: Drop the RSTATE_NO_STATE valueLuiz Capitulino
The QAPI framework won't generate it, so we need to get rid of it. In order to do that, this commit makes RSTATE_PRE_LAUNCH the initial state and change qemu_vmstop_requested() to use RSTATE_MAX. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-04vl: Change qemu_vmstop_requested() to return a boolLuiz Capitulino
The stop reason is returned in the RunState argument. This is a preparation for a future commit which will convert the query-status command to the QAPI. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-20Merge remote-tracking branch 'qmp/queue/qmp' into stagingAnthony Liguori
2011-09-16Fix termination by signal with -no-shutdownKevin Wolf
On signals such as SIGTERM qemu should exit instead of just stopping the VM even with -no-shutdown. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-09-15QMP: query-status: Introduce 'status' keyLuiz Capitulino
This new key reports the current VM status to clients. Please, check the documentation being added in this commit for more details. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15Monitor/QMP: Don't allow cont on bad VM stateLuiz Capitulino
We have two states where issuing cont before system_reset can cause problems: RSTATE_SHUTDOWN (when -no-shutdown is used) and RSTATE_PANICKED (which only happens with kvm). This commit fixes that by doing the following when state is RSTATE_SHUTDOWN or RSTATE_PANICKED: 1. returning an error to the user/client if cont is issued 2. automatically transition to RSTATE_PAUSED during system_reset Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15Drop the vm_running global variableLuiz Capitulino
Use runstate_is_running() instead, which is introduced by this commit. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15Drop the incoming_expected global variableLuiz Capitulino
Test against RSTATE_IN_MIGRATE instead. Please, note that the RSTATE_IN_MIGRATE state is only set when all the initial VM setup is done, while 'incoming_expected' was set right in the beginning when parsing command-line options. Shouldn't be a problem as far as I could check. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15runstate_set(): Check for valid transitionsLuiz Capitulino
This commit could have been folded with the previous one, however doing it separately will allow for easy bisect and revert if needed. Checking and testing all valid transitions wasn't trivial, chances are this will need broader testing to become more stable. This is a transition table as suggested by Lluís Vilanova. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15RunState: Add additional statesLuiz Capitulino
Currently, only vm_start() and vm_stop() change the VM state. That's, the state is only changed when starting or stopping the VM. This commit adds the runstate_set() function, which makes it possible to also do state transitions when the VM is stopped or running. Additional states are also added and the current state is stored. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15Replace the VMSTOP macros with a proper state typeLuiz Capitulino
Today, when notifying a VM state change with vm_state_notify(), we pass a VMSTOP macro as the 'reason' argument. This is not ideal because the VMSTOP macros tell why qemu stopped and not exactly what the current VM state is. One example to demonstrate this problem is that vm_start() calls vm_state_notify() with reason=0, which turns out to be VMSTOP_USER. This commit fixes that by replacing the VMSTOP macros with a proper state type called RunState. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-09Merge remote-tracking branch 'stefanha/trivial-patches' into stagingAnthony Liguori
2011-09-09Don't use g_thread_get_initialized.Gerd Hoffmann
Initialize glib threads unconditionally in main() instead of using g_thread_get_initialized in the 9p code. Fixes a build failure on RHEL-5, which ships glib 2.12. g_thread_get_initialized was added in 2.20. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-09-09Fix comment (install patch -> install path)Stefan Weil
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-09-02rename qemu_malloc and related to glib names for coherenceFrediano Ziglio
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Frediano Ziglio <freddy77@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-09-02main: force enabling of I/O threadAnthony Liguori
Enabling the I/O thread by default seems like an important part of declaring 1.0. Besides allowing true SMP support with KVM, the I/O thread means that the TCG VCPU doesn't have to multiplex itself with the I/O dispatch routines which currently requires a (racey) signal based alarm system. I know there have been concerns about performance. I think so far the ones that have come up (virtio-net) are most likely due to secondary reasons like decreased batching. I think we ought to force enabling I/O thread early in 1.0 development and commit to resolving any lingering issues. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-09-02Merge remote-tracking branch 'stefanha/tracing' into stagingAnthony Liguori
2011-09-01Add glib support to main loopAnthony Liguori
This allows GSources to be used to register callback events in QEMU. This is useful as it allows us to take greater advantage of glib and also because it allows us to write code that is more easily testable outside of QEMU since we can make use of glib's main loop in unit tests. All new code should use glib's callback mechanisms for registering fd events which are very well documented at: http://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html And: http://developer.gnome.org/gio/stable/ Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-09-01trace: add "-trace events" argument to control initial stateLluís
The "-trace events" argument can be used to provide a file with a list of trace event names that will be enabled prior to starting execution, thus providing early tracing. This saves the user from manually toggling event states through the monitor interface or whichever backend-specific interface. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
2011-09-01trace: avoid conditional code compilation during option parsingLluís
A default implementation for backend-specific routines is provided in "trace/default.c", which backends can override by setting "trace_default=no" in "configure". Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
2011-09-01trace: move backend-specific code into the trace/ directoryLluís
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
2011-09-01trace: [configure] rename CONFIG_*_TRACE into CONFIG_TRACE_*Lluís
Provides a more hierarchical view of the variable domain. Also adds the CONFIG_TRACE_* variables for all backends. [Stefan added missing 'test' in stap if statement] Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-22Poll main loop after I/O events were receivedJan Kiszka
Polling until select returns empty fdsets helps to reduce the switches between iothread and vcpus. The benefit of this patch is best visible when running an SMP guest on an SMP host in emulation mode. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-22Do not drop global mutex for polled main loop runsJan Kiszka
If we call select without a timeout, it's more efficient to keep the global mutex locked as we may otherwise just play ping pong with a vcpu thread contending for it. This is particularly important for TCG mode where we run in lock-step with the vcpu thread. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-22char: qemu_chr_open_opts() -> qemu_chr_new_from_opts()Anthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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