Direct leak of 12 byte(s) in 2 object(s) allocated from:
#0 0x7f50d403c850 in malloc (/lib64/libasan.so.4+0xde850)
#1 0x7f50d1ddf98f in vasprintf (/lib64/libc.so.6+0x8098f)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180104160523.22995-12-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fixes leaks such as:
Direct leak of 2 byte(s) in 1 object(s) allocated from:
#0 0x7eff58beb850 in malloc (/lib64/libasan.so.4+0xde850)
#1 0x7eff57942f0c in g_malloc ../glib/gmem.c:94
#2 0x7eff579431cf in g_malloc_n ../glib/gmem.c:331
#3 0x7eff5795f6eb in g_strdup ../glib/gstrfuncs.c:363
#4 0x55db720f1d46 in readline_hist_add /home/elmarco/src/qq/util/readline.c:258
#5 0x55db720f2d34 in readline_handle_byte /home/elmarco/src/qq/util/readline.c:387
#6 0x55db71539d00 in monitor_read /home/elmarco/src/qq/monitor.c:3896
#7 0x55db71f9be35 in qemu_chr_be_write_impl /home/elmarco/src/qq/chardev/char.c:167
#8 0x55db71f9bed3 in qemu_chr_be_write /home/elmarco/src/qq/chardev/char.c:179
#9 0x55db71fa013c in fd_chr_read /home/elmarco/src/qq/chardev/char-fd.c:66
#10 0x55db71fe18a8 in qio_channel_fd_source_dispatch /home/elmarco/src/qq/io/channel-watch.c:84
#11 0x7eff5793a90b in g_main_dispatch ../glib/gmain.c:3182
#12 0x7eff5793b7ac in g_main_context_dispatch ../glib/gmain.c:3847
#13 0x55db720af3bd in glib_pollfds_poll /home/elmarco/src/qq/util/main-loop.c:214
#14 0x55db720af505 in os_host_main_loop_wait /home/elmarco/src/qq/util/main-loop.c:261
#15 0x55db720af6d6 in main_loop_wait /home/elmarco/src/qq/util/main-loop.c:515
#16 0x55db7184e0de in main_loop /home/elmarco/src/qq/vl.c:1995
#17 0x55db7185e956 in main /home/elmarco/src/qq/vl.c:4914
#18 0x7eff4ea17039 in __libc_start_main (/lib64/libc.so.6+0x21039)
(while at it, use g_new0(ReadLineState), it's a bit easier to read)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180104160523.22995-11-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Note that data_dir[] will now point to allocated strings.
Fixes:
Direct leak of 16 byte(s) in 1 object(s) allocated from:
#0 0x7f1448181850 in malloc (/lib64/libasan.so.4+0xde850)
#1 0x7f1446ed8f0c in g_malloc ../glib/gmem.c:94
#2 0x7f1446ed91cf in g_malloc_n ../glib/gmem.c:331
#3 0x7f1446ef739a in g_strsplit ../glib/gstrfuncs.c:2364
#4 0x55cf276439d7 in main /home/elmarco/src/qq/vl.c:4311
#5 0x7f143dfad039 in __libc_start_main (/lib64/libc.so.6+0x21039)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180104160523.22995-10-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
/public/qobject_is_equal_conversion: OK
=================================================================
==14396==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 56 byte(s) in 1 object(s) allocated from:
#0 0x7f07682c5850 in malloc (/lib64/libasan.so.4+0xde850)
#1 0x7f0767d12f0c in g_malloc ../glib/gmem.c:94
#2 0x7f0767d131cf in g_malloc_n ../glib/gmem.c:331
#3 0x562bd767371f in do_test_equality /home/elmarco/src/qq/tests/check-qobject.c:49
#4 0x562bd7674a35 in qobject_is_equal_dict_test /home/elmarco/src/qq/tests/check-qobject.c:267
#5 0x7f0767d37b04 in test_case_run ../glib/gtestutils.c:2237
#6 0x7f0767d37ec4 in g_test_run_suite_internal ../glib/gtestutils.c:2321
#7 0x7f0767d37f6d in g_test_run_suite_internal ../glib/gtestutils.c:2333
#8 0x7f0767d38184 in g_test_run_suite ../glib/gtestutils.c:2408
#9 0x7f0767d36e0d in g_test_run ../glib/gtestutils.c:1674
#10 0x562bd7674e75 in main /home/elmarco/src/qq/tests/check-qobject.c:327
#11 0x7f0766009039 in __libc_start_main (/lib64/libc.so.6+0x21039)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180104160523.22995-9-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a 'dma' property allowing machine creation to provide the address-space
SDHCI DMA operates on.
[based on a patch from Alistair Francis <alistair.francis@xilinx.com>
from qemu/xilinx tag xilinx-v2016.1]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180115182436.2066-15-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
While SysBus devices can use the get_system_memory() address space,
PCI devices should use the bus master address space for DMA.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20180115182436.2066-14-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-11-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-10-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
zero-initialize ADMADescr 'dscr' in sdhci_do_adma() to avoid:
hw/sd/sdhci.c: In function ‘sdhci_do_adma’:
hw/sd/sdhci.c:714:29: error: ‘dscr.addr’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
trace_sdhci_adma("link", s->admasysaddr);
^
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-9-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-8-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-7-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-6-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Now both inherited classes appear as DEVICE_CATEGORY_STORAGE.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-5-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add common/sysbus/pci/sdbus comments to have clearer code blocks separation.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180115182436.2066-4-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-3-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 20180115182436.2066-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20180110063337.21538-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20180110063337.21538-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since omap_mmc is still using the legacy SD card API, the SD
card created by sd_init() is not plugged into any bus. This
means that the controller has to reset it manually.
Failing to do this mostly didn't affect the guest since the
guest typically does a programmed SD card reset as part of
its SD controller driver initialization, but would mean that
migration fails because it's only in sd_reset() that we
set up the wpgrps_size field.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1515506513-31961-5-git-send-email-peter.maydell@linaro.org
Since ssi-sd is still using the legacy SD card API, the SD
card created by sd_init() is not plugged into any bus. This
means that the controller has to reset it manually.
Failing to do this mostly didn't affect the guest since the
guest typically does a programmed SD card reset as part of
its SD controller driver initialization, but meant that
migration failed because it's only in sd_reset() that we
set up the wpgrps_size field.
In the case of sd-ssi, we have to implement an entire
reset function since there wasn't one previously, and
that requires a QOM cast macro that got omitted when this
device was QOMified.
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1515506513-31961-4-git-send-email-peter.maydell@linaro.org
Since milkymist-memcard is still using the legacy SD card API,
the SD card created by sd_init() is not plugged into any bus.
This means that the controller has to reset it manually.
Failing to do this mostly didn't affect the guest since the
guest typically does a programmed SD card reset as part of
its SD controller driver initialization, but meant that
migration failed because it's only in sd_reset() that we
set up the wpgrps_size field.
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1515506513-31961-3-git-send-email-peter.maydell@linaro.org
Since pl181 is still using the legacy SD card API, the SD
card created by sd_init() is not plugged into any bus. This
means that the controller has to reset it manually.
Failing to do this mostly didn't affect the guest since the
guest typically does a programmed SD card reset as part of
its SD controller driver initialization, but meant that
migration failed because it's only in sd_reset() that we
set up the wpgrps_size field.
Cc: qemu-stable@nongnu.org
Fixes: https://bugs.launchpad.net/qemu/+bug/1739378
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1515506513-31961-2-git-send-email-peter.maydell@linaro.org
Instead of ignoring the response from address_space_ld*()
(indicating an attempt to read a page table descriptor from
an invalid physical address), use it to report the failure
correctly.
Since this is another couple of locations where we need to
decide the value of the ARMMMUFaultInfo ea bit based on a
MemTxResult, we factor out that operation into a helper
function.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For PMSAv7, the v7A/R Arm ARM defines that setting AP to 0b111
is an UNPREDICTABLE reserved combination. However, for v7M
this value is documented as having the same behaviour as 0b110:
read-only for both privileged and unprivileged. Accept this
value on an M profile core rather than treating it as a guest
error and a no-access page.
Reported-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1512742402-31669-1-git-send-email-peter.maydell@linaro.org
The Configurable Fault Status Register for ARMv7M and v8M is
supposed to be byte and halfword accessible, but we were only
implementing word accesses. Add support for the other access
sizes, which are used by the Zephyr RTOS.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reported-by: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1512742372-31517-1-git-send-email-peter.maydell@linaro.org
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Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20180115' into staging
migration/next for 20180115
# gpg: Signature made Mon 15 Jan 2018 11:51:00 GMT
# gpg: using RSA key 0xF487EF185872D723
# 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/20180115: (27 commits)
migration: remove notify in fd_error
migration: remove some block_cleanup_parameters()
migration: put the finish part into a new function
migration: major cleanup for migrate iterations
migration: cleanup stats update into function
migration: use switch at the end of migration
migration: introduce migrate_calculate_complete
migration: introduce downtime_start
migration: move vm_old_running into global state
migration: split use of MigrationState.total_time
migration: remove "enable_colo" var
migration: qemu_savevm_state_cleanup() in cleanup
migration: assert colo instead of check
migration: finalize current_migration object
migration: Guard ram_bytes_remaining against early call
migration: add postcopy total blocktime into query-migrate
migration: add blocktime calculation into migration-test
migration: postcopy_blocktime documentation
migration: calculate vCPU blocktime on dst side
migration: add postcopy blocktime ctx into MigrationIncomingState
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
It is already called in migrate_fd_cleanup.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Keep the one in migrate_fd_cleanup() would be enough. Removing the other
two.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This patch only moved the last part of migration_thread() into a new
function migration_iteration_finish() to make it much shorter. With
previous works to remove some local variables, now it's fairly easy to
do that.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
The major work for migration iterations are to move RAM/block/... data
via qemu_savevm_state_iterate(). Generalize those part into a single
function.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
We have quite a few lines in migration_thread() that calculates some
statistics for the migration interations. Isolate it into a single
function to improve readability.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
It converts the old if clauses into switch, explicitly mentions the
possible migration states. The old nested "if"s are not clear on what
we do on different states.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Generalize the calculation part when migration complete into a
function to simplify migration_thread().
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Introduce MigrationState.downtime_start to replace the local variable
"start_time" in migration_thread to avoid passing things around.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Firstly, it was passed around. Let's just move it into MigrationState
just like many other variables as state of migration, renaming it to
vm_was_running.
One thing to mention is that for postcopy, we actually don't need this
knowledge at all since postcopy can't resume a VM even if it fails (we
can see that from the old code too: when we try to resume we also check
against "entered_postcopy" variable). So further we do this:
- in postcopy_start(), we don't update vm_old_running since useless
- in migration_thread(), we don't need to check entered_postcopy when
resume, since it's only used for precopy.
Comment this out too for that variable definition.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
It was used either to:
1. store initial timestamp of migration start, and
2. store total time used by last migration
Let's provide two parameters for each of them. Mix use of the two is
slightly misleading.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Moving existing callers all into migrate_fd_cleanup(). It simplifies
migration_thread() a bit.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
When reaching here if we are still "active" it means we must be in colo
state. After a quick discussion offlist, we decided to use the safer
error_report().
Finally I want to use "switch" here rather than lots of complicated if
clauses.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
current_migration has .instance_finalize callback, but it is not
called, because nobody unrefs current_migration. Fix that.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Calling ram_bytes_remaining during the early part of setup is unsafe
because the ram_state isn't yet initialised.
This can happen in the sequence:
migrate
migrate_cancel
info migrate
if the migrate sticks trying to connect (e.g. to an unresponsive
destination due to the connect timeout). Here 'info migrate' sees
a state of CANCELLING and so assumes the migrate has partially happened.
partial fix for:
RH bz: https://bugzilla.redhat.com/show_bug.cgi?id=1525899
Reported-by: Xianxian Wang <xianwang@redhat.com>
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>
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>
This patch just requests blocktime calculation,
and check it in case when UFFD_FEATURE_THREAD_ID feature is set
on the host.
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>
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>
This patch provides blocktime calculation per vCPU,
as a summary and as a overlapped value for all vCPUs.
This approach was suggested by Peter Xu, as an improvements of
previous approch where QEMU kept tree with faulted page address and cpus bitmask
in it. Now QEMU is keeping array with faulted page address as value and vCPU
as index. It helps to find proper vCPU at UFFD_COPY time. Also it keeps
list for blocktime per vCPU (could be traced with page_fault_addr)
Blocktime will not calculated if postcopy_blocktime field of
MigrationIncomingState wasn't initialized.
Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This patch adds request to kernel space for UFFD_FEATURE_THREAD_ID, in
case this feature is provided by kernel.
PostcopyBlocktimeContext is encapsulated inside postcopy-ram.c,
due to it being a postcopy-only feature.
Also it defines PostcopyBlocktimeContext's instance live time.
Information from PostcopyBlocktimeContext instance will be provided
much after postcopy migration end, instance of PostcopyBlocktimeContext
will live till QEMU exit, but part of it (vcpu_addr,
page_fault_vcpu_time) used only during calculation, will be released
when postcopy ended or failed.
To enable postcopy blocktime calculation on destination, need to
request proper compatibility (Patch for documentation will be at the
tail of the patch set).
As an example following command enable that capability, assume QEMU was
started with
-chardev socket,id=charmonitor,path=/var/lib/migrate-vm-monitor.sock
option to control it
[root@host]#printf "{\"execute\" : \"qmp_capabilities\"}\r\n \
{\"execute\": \"migrate-set-capabilities\" , \"arguments\": {
\"capabilities\": [ { \"capability\": \"postcopy-blocktime\", \"state\":
true } ] } }" | nc -U /var/lib/migrate-vm-monitor.sock
Or just with HMP
(qemu) migrate_set_capability postcopy-blocktime on
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>
