Commit Graph

355 Commits

Author SHA1 Message Date
Paolo Bonzini
1834ed3afc w32: include winsock2.h before windows.h
Recent Fedora complains while compiling ui/sdl.c:

    /usr/x86_64-w64-mingw32/sys-root/mingw/include/winsock2.h:15:2: warning: #warning Please include winsock2.h before windows.h [-Wcpp]

And with this patch we dutifully obey.

Stefan Weil:

Without that patch, windows.h will include winsock.h
(which conflicts with winsock2.h) when compiling sdl.c.

Normally we define WIN32_LEAN_AND_MEAN, and
windows.h won't include winsock.h.

include/ui/sdl2.h and ui/sdl.c undefine that macro,
so the order of the include files is important.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-02-11 15:15:47 +03:00
Max Reitz
d8da3cef3b block: Add blk_remove_all_bs()
When bdrv_close_all() is called, instead of force-closing all root
BlockDriverStates, it is better to just drop the reference from all
BlockBackends and let them be closed automatically. This prevents BDS
from getting closed that are still referenced by other BDS, which may
result in loss of cached data.

This patch adds a function for doing that, but does not yet incorporate
it in bdrv_close_all().

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-02 17:50:46 +01:00
Max Reitz
033cb5659a block: Remove BDS close notifier
It is unused now, so we can remove it.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-02 17:50:46 +01:00
Max Reitz
3301f6c6e9 block: Add BB-BDS remove/insert notifiers
bdrv_close() no longer signifies ejection of a medium, this is now done
by removing the BDS from the BB. Therefore, we want to have a notifier
for that in the BB instead of a close notifier in the BDS. The former is
added now, the latter is removed later.

Symmetrically, another notifier list is added that is invoked whenever a
BDS is inserted. We will need that for virtio-blk and virtio-scsi, which
can then remove their op blockers on BDS ejection and set them up on
insertion.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-02 17:50:46 +01:00
Marc-André Lureau
6db2625572 char: remove qemu_chr_open_eventfd
Broken since d0d7708ba2, since the backend is NULL.

And now no longer needed by ivshmem.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
2016-02-02 13:28:58 +01:00
Bo Tu
0d035b6c5e watchdog: introduction of get_watchdog_action
Add get_watchdog_action(void) to allow access to the configured action.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Bo Tu <tubo@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27 15:34:47 +01:00
Daniel P. Berrange
d0d7708ba2 qemu-char: add logfile facility to all chardev backends
Typically a UNIX guest OS will log boot messages to a serial
port in addition to any graphical console. An admin user
may also wish to use the serial port for an interactive
console. A virtualization management system may wish to
collect system boot messages by logging the serial port,
but also wish to allow admins interactive access.

Currently providing such a feature forces the mgmt app
to either provide 2 separate serial ports, one for
logging boot messages and one for interactive console
login, or to proxy all output via a separate service
that can multiplex the two needs onto one serial port.
While both are valid approaches, they each have their
own downsides. The former causes confusion and extra
setup work for VM admins creating disk images. The latter
places an extra burden to re-implement much of the QEMU
chardev backends logic in libvirt or even higher level
mgmt apps and adds extra hops in the data transfer path.

A simpler approach that is satisfactory for many use
cases is to allow the QEMU chardev backends to have a
"logfile" property associated with them.

 $QEMU -chardev socket,host=localhost,port=9000,\
                server=on,nowait,id-charserial0,\
		logfile=/var/log/libvirt/qemu/test-serial0.log
       -device isa-serial,chardev=charserial0,id=serial0

This patch introduces a 'ChardevCommon' struct which
is setup as a base for all the ChardevBackend types.
Ideally this would be registered directly as a base
against ChardevBackend, rather than each type, but
the QAPI generator doesn't allow that since the
ChardevBackend is a non-discriminated union. The
ChardevCommon struct provides the optional 'logfile'
parameter, as well as 'logappend' which controls
whether QEMU truncates or appends (default truncate).

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1452516281-27519-1-git-send-email-berrange@redhat.com>
[Call qemu_chr_parse_common if cd->parse is NULL. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-15 18:58:02 +01:00
Paolo Bonzini
f1c17521e7 nbd-server: do not exit on failed memory allocation
The amount of memory allocated in nbd_co_receive_request is driven by the
NBD client (possibly a virtual machine).  Parallel I/O can cause the
server to allocate a large amount of memory; check for failures and
return ENOMEM in that case.

Cc: qemu-block@nongnu.org
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-15 18:58:02 +01:00
Andrew Jones
b6e05aa473 dump: allow target to set the physical base
crash assumes the physical base in the kdump subheader of
makedumpfile formatted dumps is correct. Zero is not correct
for all architectures, so allow it to be changed.

(No functional change.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-5-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-15 14:40:25 +00:00
Andrew Jones
8161befdd1 dump: allow target to set the page size
This is necessary for targets that don't have TARGET_PAGE_SIZE ==
real-target-page-size. The target should set the page size to the
correct one, if known, or, if not known, to the maximum page size
it supports.

(No functional change.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1452542185-10914-4-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-15 14:40:25 +00:00
Stefan Hajnoczi
648296e067 block-backend: add blk_get_max_iov()
Add a function to query BlockLimits.max_iov.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-12-22 16:01:07 +08:00
Paolo Bonzini
15eafc2e60 kvm: x86: add support for KVM_CAP_SPLIT_IRQCHIP
This patch adds support for split IRQ chip mode. When
KVM_CAP_SPLIT_IRQCHIP is enabled:

    1.) The PIC, PIT, and IOAPIC are implemented in userspace while
    the LAPIC is implemented by KVM.

    2.) The software IOAPIC delivers interrupts to the KVM LAPIC via
    kvm_set_irq. Interrupt delivery is configured via the MSI routing
    table, for which routes are reserved in target-i386/kvm.c then
    configured in hw/intc/ioapic.c

    3.) KVM delivers IOAPIC EOIs via a new exit KVM_EXIT_IOAPIC_EOI,
    which is handled in target-i386/kvm.c and relayed to the software
    IOAPIC via ioapic_eoi_broadcast.

Signed-off-by: Matt Gingell <gingell@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-17 17:33:47 +01:00
Matt Gingell
32c18a2dba kvm: add support for -machine kernel_irqchip=split
This patch adds the initial plumbing for split IRQ chip mode via
KVM_CAP_SPLIT_IRQCHIP. In addition to option processing, a number of
kvm_*_in_kernel macros are defined to help clarify which component is
where.

Signed-off-by: Matt Gingell <gingell@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-17 17:15:40 +01:00
Andrey Smetanin
977a8d9c0d kvm: Hyper-V SynIC irq routing support
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Andreas Färber" <afaerber@suse.de>
CC: Marcelo Tosatti <mtosatti@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-17 15:24:34 +01:00
Stefan Weil
a28c2f2df7 oslib-win32: Change return type of function getpagesize
getpagesize on Linux returns an int. Fix QEMU's implementation for
Windows to return an int (instead of size_t), too.

This fixes a compiler warning which was introduced recently
(commit 093e3c42).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
2015-11-30 06:47:02 +01:00
Peter Lieven
ca78ecfa72 block: add blk_abort_aio_request
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1447345846-15624-3-git-send-email-pl@kamp.de
Signed-off-by: John Snow <jsnow@redhat.com>
2015-11-17 15:06:21 -05:00
Dr. David Alan Gilbert
1c0d249ddf Finish non-postcopiable iterative devices before package
Where we have iterable, but non-postcopiable devices (e.g. htab
or block migration), complete them before forming the 'package'
but with the CPUs stopped.  This stops them filling up the package.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-12 17:52:29 +01:00
Jason Wang
351082238d KVM: add support for any length io eventfd
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-12 15:49:32 +02:00
Alberto Garcia
f636ae85f3 block: Add blk_get_refcnt()
This function returns the reference count of a given BlockBackend.
For convenience, it returns 0 if the BlockBackend pointer is NULL.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: dfdd8a17dbe3288842840636d2cfe5bb895abcb0.1446475331.git.berto@igalia.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2015-11-11 16:55:28 +01:00
Max Reitz
24fb413300 qmp: Introduce blockdev-change-medium
Introduce a new QMP command 'blockdev-change-medium' which is intended
to replace the 'change' command for block devices. The existing function
qmp_change_blockdev() is accordingly renamed to
qmp_blockdev_change_medium().

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-11-11 16:22:47 +01:00
Max Reitz
38cb18f5b7 block: Add functions for inheriting a BBRS
In order to open a BDS which inherits a BB's root state,
blk_get_open_flags_from_root_state() is used to inquire the flags to be
passed to bdrv_open(), and blk_apply_root_state() is used to apply the
remaining state after the BDS has been opened.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-11-11 16:22:46 +01:00
Max Reitz
1c95f7e1af block: Add blk_remove_bs()
This function removes the BlockDriverState associated with the given
BlockBackend from that BB and sets the BDS pointer in the BB to NULL.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-11-11 16:22:46 +01:00
Dr. David Alan Gilbert
371ff5a3f0 Inhibit ballooning during postcopy
Postcopy detects accesses to pages that haven't been transferred yet
using userfaultfd, and it causes exceptions on pages that are 'not
present'.
Ballooning also causes pages to be marked as 'not present' when the
guest inflates the balloon.
Potentially a balloon could be inflated to discard pages that are
currently inflight during postcopy and that may be arriving at about
the same time.

To avoid this confusion, disable ballooning during postcopy.

When disabled we drop balloon requests from the guest.  Since ballooning
is generally initiated by the host, the management system should avoid
initiating any balloon instructions to the guest during migration,
although it's not possible to know how long it would take a guest to
process a request made prior to the start of migration.
Guest initiated ballooning will not know if it's really freed a page
of host memory or not.

Queueing the requests until after migration would be nice, but is
non-trivial, since the set of inflate/deflate requests have to
be compared with the state of the page to know what the final
outcome is allowed to be.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:28 +01:00
Dr. David Alan Gilbert
58b7c17e22 Disable mlock around incoming postcopy
Userfault doesn't work with mlock; mlock is designed to nail down pages
so they don't move, userfault is designed to tell you when they're not
there.

munlock the pages we userfault protect before postcopy.
mlock everything again at the end if mlock is enabled.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:28 +01:00
Dr. David Alan Gilbert
35ecd943e7 Don't iterate on precopy-only devices during postcopy
During the postcopy phase we must not call the iterate method on
precopy-only devices, since they may have done some cleanup during
the _complete call at the end of the precopy phase.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:28 +01:00
Dr. David Alan Gilbert
763c906b0e Add qemu_savevm_state_complete_postcopy
Add qemu_savevm_state_complete_postcopy to complement
qemu_savevm_state_complete_precopy together with a new
save_live_complete_postcopy method on devices.

The save_live_complete_precopy method is called on
all devices during a precopy migration, and all non-postcopy
devices during a postcopy migration at the transition.

The save_live_complete_postcopy method is called at
the end of postcopy for all postcopiable devices.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:27 +01:00
Dr. David Alan Gilbert
c31b098f64 Modify save_live_pending for postcopy
Modify save_live_pending to return separate postcopiable and
non-postcopiable counts.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:26 +01:00
Dr. David Alan Gilbert
11cf1d984b MIG_CMD_PACKAGED: Send a packaged chunk of migration stream
MIG_CMD_PACKAGED is a migration command that wraps a chunk of migration
stream inside a package whose length can be determined purely by reading
its header.  The destination guarantees that the whole MIG_CMD_PACKAGED
is read off the stream prior to parsing the contents.

This is used by postcopy to load device state (from the package)
while leaving the main stream free to receive memory pages.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:26 +01:00
Dr. David Alan Gilbert
093e3c4296 Add wrappers and handlers for sending/receiving the postcopy-ram migration messages.
The state of the postcopy process is managed via a series of messages;
   * Add wrappers and handlers for sending/receiving these messages
   * Add state variable that track the current state of postcopy

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:26 +01:00
Dr. David Alan Gilbert
2e37701efd Return path: Control commands
Add two src->dest commands:
   * OPEN_RETURN_PATH - To request that the destination open the return path
   * PING - Request an acknowledge from the destination

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:25 +01:00
Dr. David Alan Gilbert
c76ca1888f Migration commands
Create QEMU_VM_COMMAND section type for sending commands from
source to destination.  These commands are not intended to convey
guest state but to control the migration process.

For use in postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 15:00:25 +01:00
Dr. David Alan Gilbert
a3e06c3d13 Rename save_live_complete to save_live_complete_precopy
In postcopy we're going to need to perform the complete phase
for postcopiable devices at a different point, start out by
renaming all of the 'complete's to make the difference obvious.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 14:51:49 +01:00
Dr. David Alan Gilbert
038629a699 Provide runtime Target page information
The migration code generally is built target-independent, however
there are a few places where knowing the target page size would
avoid artificially moving stuff into migration/ram.c.

Provide 'qemu_target_page_bits()' that returns TARGET_PAGE_BITS
to other bits of code so that they can stay target-independent.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10 14:51:48 +01:00
Peter Maydell
9319738080 So here it is, let's see what happens.
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream-replay' into staging

So here it is, let's see what happens.

# gpg: Signature made Fri 06 Nov 2015 09:30:34 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream-replay:
  replay: recording of the user input
  replay: command line options
  replay: replay blockers for devices
  replay: initialization and deinitialization
  replay: ptimer
  bottom halves: introduce bh call function
  replay: checkpoints
  icount: improve counting for record/replay
  replay: shutdown event
  replay: recording and replaying clock ticks
  replay: asynchronous events infrastructure
  replay: interrupts and exceptions
  cpu: replay instructions sequence
  cpu-exec: allow temporary disabling icount
  replay: introduce icount event
  replay: introduce mutex to protect the replay log
  replay: internal functions for replay log
  replay: global variables and function stubs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-11-06 11:31:40 +00:00
Pavel Dovgalyuk
ee312992a3 replay: recording of the user input
This records user input (keyboard and mouse events) in record mode and replays
these input events in replay mode.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162524.8676.11696.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:03 +01:00
Pavel Dovgalyuk
0194749ac4 replay: replay blockers for devices
Some devices are not supported by record/replay subsystem.
This patch introduces replay blocker which denies starting record/replay
if such devices are included into the configuration.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162512.8676.11367.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:03 +01:00
Pavel Dovgalyuk
7615936ebf replay: initialization and deinitialization
This patch introduces the functions for enabling the record/replay and for
freeing the resources when simulator closes.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162507.8676.90232.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:03 +01:00
Pavel Dovgalyuk
8a354bd935 replay: ptimer
This patch adds deterministic replay for hardware periodic countdown timers.
ptimer uses bottom halves layer to execute such an asynchronous callback.
We put this callback into the replay queue instead of bottom halves one.
When checkpoint is met by main loop thread, the replay queue is processed
and callback is executed. Binding callback moment to one of the checkpoints
makes it deterministic.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162456.8676.83366.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:03 +01:00
Pavel Dovgalyuk
8bd7f71d79 replay: checkpoints
This patch introduces checkpoints that synchronize cpu thread and iothread.
When checkpoint is met in the code all asynchronous events from the queue
are executed.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162444.8676.52916.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:03 +01:00
Pavel Dovgalyuk
b60c48a701 replay: shutdown event
This patch records and replays simulator shutdown event.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162433.8676.32262.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:02 +01:00
Pavel Dovgalyuk
8eda206e09 replay: recording and replaying clock ticks
Clock ticks are considered as the sources of non-deterministic data for
virtual machine. This patch implements saving the clock values when they
are acquired (virtual, host clock).
When replaying the execution corresponding values are read from log and
transfered to the module, which wants to read the values.
Such a design required the clock polling to be synchronized. Sometimes
it is not true - e.g. when timeouts for timer lists are checked. In this case
we use a cached value of the clock, passing it to the client code.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162427.8676.36558.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:02 +01:00
Pavel Dovgalyuk
c0c071d052 replay: asynchronous events infrastructure
This patch adds module for saving and replaying asynchronous events.
These events include network packets, keyboard and mouse input,
USB packets, thread pool and bottom halves callbacks.
All events are stored in the queue to be processed at synchronization points
such as beginning of TB execution, or checkpoint in the iothread.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162422.8676.88696.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2015-11-06 10:16:02 +01:00
Pavel Dovgalyuk
6f0609697f replay: interrupts and exceptions
This patch includes modifications of common cpu files. All interrupts and
exceptions occured during recording are written into the replay log.
These events allow correct replaying the execution by kicking cpu thread
when one of these events is found in the log.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162416.8676.57647.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-06 10:16:00 +01:00
Peter Maydell
496c1b19fa * Guest ABI fixes for PC machines (hw_version)
* Fixes for recent Perl
 * John Snow's configure fixes
 * file-backed RAM improvements (Igor, Pavel)
 * -Werror=clobbered fixes (Stefan)
 * Kill -d ioport
 * Fix qemu-system-s390x
 * Performance improvement for kvmclock migration
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Guest ABI fixes for PC machines (hw_version)
* Fixes for recent Perl
* John Snow's configure fixes
* file-backed RAM improvements (Igor, Pavel)
* -Werror=clobbered fixes (Stefan)
* Kill -d ioport
* Fix qemu-system-s390x
* Performance improvement for kvmclock migration

# gpg: Signature made Thu 05 Nov 2015 13:42:27 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream:
  iscsi: Translate scsi sense into error code
  Revert "Introduce cpu_clean_all_dirty"
  kvmclock: add a new function to update env->tsc.
  configure: disable FORTIFY_SOURCE under clang
  backends/hostmem-file: Allow to specify full pathname for backing file
  configure: disallow ccache during compile tests
  cpu-exec: Fix compiler warning (-Werror=clobbered)
  memory: call begin, log_start and commit when registering a new listener
  megasas: Use qemu_hw_version() instead of QEMU_VERSION
  osdep: Rename qemu_{get, set}_version() to qemu_{, set_}hw_version()
  pc: Set hw_version on all machine classes
  qemu-log: remove -d ioport
  ioport: do not use CPU_LOG_IOPORT
  target-i386: fix pcmpxstrx equal-ordered (strstr) mode
  scripts/text2pod.pl: Escape left brace
  file_ram_alloc: propagate error to caller instead of terminating QEMU

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-11-05 14:31:24 +00:00
Pavel Dovgalyuk
8b42704441 cpu: replay instructions sequence
This patch adds calls to replay functions into the icount setup block.
In record mode number of executed instructions is written to the log.
In replay mode number of istructions to execute is taken from the replay log.
When replayed instructions counter is expired qemu_notify_event()
function is called to wake up the iothread.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162405.8676.31890.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-05 12:19:09 +01:00
Pavel Dovgalyuk
26bc60ac82 replay: introduce icount event
This patch adds icount event to the replay subsystem. This event corresponds
to execution of several instructions and used to synchronize input events
in the replay phase.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162354.8676.31351.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-05 12:19:09 +01:00
Pavel Dovgalyuk
d73abd6dcc replay: global variables and function stubs
This patch adds global variables, defines, function declarations,
and function stubs for deterministic VM replay used by external modules.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162337.8676.41538.stgit@PASHA-ISP.def.inno>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-05 12:19:08 +01:00
Liang Li
6388acc853 Revert "Introduce cpu_clean_all_dirty"
This reverts commit de9d61e83d.

Now 'cpu_clean_all_dirty' is useless, we can revert the related code.

Conflicts:
	include/sysemu/kvm.h

Signed-off-by: Liang Li <liang.z.li@intel.com>
Message-Id: <1446695464-27116-3-git-send-email-liang.z.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-05 11:28:23 +01:00
Liang Li
ea7415fac6 migration: rename qemu_savevm_state_cancel
The function qemu_savevm_state_cancel is called after the migration
in migration_thread, it seems strange to 'cancel' it after completion,
rename it to qemu_savevm_state_cleanup looks better.

Signed-off-by: Liang Li <liang.z.li@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>al3
Reviewed-by: Amit Shah <amit.shah@redhat.com>al3
Signed-off-by: Juan Quintela <quintela@redhat.com>al3
2015-11-04 13:40:13 +01:00
Peter Maydell
251d7e6014 ivshmem series
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Merge remote-tracking branch 'remotes/elmarco/tags/ivshmem-pull-request' into staging

ivshmem series

# gpg: Signature made Mon 26 Oct 2015 09:27:46 GMT using RSA key ID 75969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* remotes/elmarco/tags/ivshmem-pull-request: (51 commits)
  doc: document ivshmem & hugepages
  ivshmem: use little-endian int64_t for the protocol
  ivshmem: use kvm irqfd for msi notifications
  ivshmem: rename MSI eventfd_table
  ivshmem: remove EventfdEntry.vector
  ivshmem: add hostmem backend
  ivshmem: use qemu_strtosz()
  ivshmem: do not keep shm_fd open
  tests: add ivshmem qtest
  qtest: add qtest_add_abrt_handler()
  msix: implement pba write (but read-only)
  contrib: remove unnecessary strdup()
  ivshmem: add check on protocol version in QEMU
  docs: update ivshmem device spec
  ivshmem-server: fix hugetlbfs support
  ivshmem-server: use a uint16 for client ID
  ivshmem-client: check the number of vectors
  contrib: add ivshmem client and server
  util: const event_notifier_get_fd() argument
  ivshmem: reset mask on device reset
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-10-26 11:32:20 +00:00