Reuse the code at the bottom of helper_check_breakpoints,
which is what we currently call from *_tr_breakpoint_check.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
New hook to return true when an architectural breakpoint is
to be recognized and false when it should be suppressed.
First use must wait until other pieces are in place.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Request that the one TB returns immediately, so that
we release the exclusive lock as soon as possible.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210717221851.2124573-7-richard.henderson@linaro.org>
Exchange the test in translator_use_goto_tb for CF_NO_GOTO_TB,
and the test in tb_gen_code for setting CF_COUNT_MASK to 1.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717221851.2124573-6-richard.henderson@linaro.org>
The purpose of suppressing goto_ptr from -d nochain had been
to return to the main loop so that -d cpu would be recognized.
But we now include -d cpu logging in helper_lookup_tb_ptr so
there is no need to exclude goto_ptr.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717221851.2124573-5-richard.henderson@linaro.org>
Move the -d nochain check to bits on tb->cflags.
These will be used for more than -d nochain shortly.
Set bits during curr_cflags, test them in translator_use_goto_tb,
assert we're not doing anything odd in tcg_gen_goto_tb. The test
in tcg_gen_exit_tb is redundant with the assert for goto_tb_issue_mask.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717221851.2124573-4-richard.henderson@linaro.org>
We are certain of a page crossing here, entering the
PALcode image, so the call to use_goto_tb that should
have been here will never succeed.
We are shortly going to add an assert to tcg_gen_goto_tb
that would trigger for this case.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We will shortly have more than a simple member read here,
with stuff not necessarily exposed to exec/exec-all.h.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210717221851.2124573-3-richard.henderson@linaro.org>
The space reserved for CF_COUNT_MASK was overly large.
Reduce to free up cflags bits and eliminate an extra test.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717221851.2124573-2-richard.henderson@linaro.org>
Use trace_mem_get_info instead of trace_mem_build_info,
using the TCGMemOpIdx that we already have. Do this in
the atomic_trace_*_pre function as common subroutines.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Since the last thing that mem.h does is include mem-internal.h,
the symbols are not actually private.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Unify the parameters of atomic_mmu_lookup between cputlb.c and
user-exec.c. Call the function directly, and remove the macros.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
All definitions are now empty.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
All instances of EXTRA_ARGS are now identical.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reduce the amount of code duplication by always passing
the TCGMemOpIdx argument to helper_atomic_*. This is not
currently used for user-only, but it's easy to ignore.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Always provide the atomic interface using TCGMemOpIdx oi
and uintptr_t retaddr. Rename from helper_* to cpu_* so
as to (mostly) match the exec/cpu_ldst.h functions, and
to emphasize that they are not callable from TCG directly.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use it to avoid some clang-12 -Watomic-alignment errors,
forcing some structures to be aligned and as a pointer when
we have ensured that the address is aligned.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We now require c11, so the fallbacks are now dead code
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Clang warnings about questionable atomic usage get localized
to the inline function in atomic.h. By using a macro, we get
the full traceback to the original use that caused the warning.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
When there are multiple queues attached to the same AIO context,
some requests may experience high latency, since in the worst case
the AIO engine queue is only flushed when it is full (MAX_EVENTS) or
there are no more queues plugged.
Commit 2558cb8dd4 ("linux-aio: increasing MAX_EVENTS to a larger
hardcoded value") changed MAX_EVENTS from 128 to 1024, to increase
the number of in-flight requests. But this change also increased
the potential maximum batch to 1024 elements.
When there is a single queue attached to the AIO context, the issue
is mitigated from laio_io_unplug() that will flush the queue every
time is invoked since there can't be others queue plugged.
Let's use the new `aio-max-batch` IOThread parameter to mitigate
this issue, limiting the number of requests in a batch.
We also define a default value (32): this value is obtained running
some benchmarks and it represents a good tradeoff between the latency
increase while a request is queued and the cost of the io_submit(2)
system call.
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20210721094211.69853-4-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The `aio-max-batch` parameter will be propagated to AIO engines
and it will be used to control the maximum number of queued requests.
When there are in queue a number of requests equal to `aio-max-batch`,
the engine invokes the system call to forward the requests to the kernel.
This parameter allows us to control the maximum batch size to reduce
the latency that requests might accumulate while queued in the AIO
engine queue.
If `aio-max-batch` is equal to 0 (default value), the AIO engine will
use its default maximum batch size value.
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20210721094211.69853-3-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Changes in preparation for next patches where we add a new
parameter not related to the poll mechanism.
Let's add two new generic functions (iothread_set_param and
iothread_get_param) that we use to set and get IOThread
parameters.
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20210721094211.69853-2-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
- Fix for tests/acceptance/virtio-gpu.py to match the change in device
name
- Fix for failure caught by tests/acceptance/multiprocess.py
PS: While not a maintainer for the subsystem in PATCH 7, I'm including
it as a one-off to facilitate the landing of the fix as discussed in
the mailing list.
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Merge remote-tracking branch 'remotes/cleber-gitlab/tags/python-next-pull-request' into staging
Acceptance Tests
- Fix for tests/acceptance/virtio-gpu.py to match the change in device
name
- Fix for failure caught by tests/acceptance/multiprocess.py
PS: While not a maintainer for the subsystem in PATCH 7, I'm including
it as a one-off to facilitate the landing of the fix as discussed in
the mailing list.
# gpg: Signature made Wed 21 Jul 2021 00:26:17 BST
# gpg: using RSA key 7ABB96EB8B46B94D5E0FE9BB657E8D33A5F209F3
# gpg: Good signature from "Cleber Rosa <crosa@redhat.com>" [marginal]
# 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: 7ABB 96EB 8B46 B94D 5E0F E9BB 657E 8D33 A5F2 09F3
* remotes/cleber-gitlab/tags/python-next-pull-request:
remote/memory: Replace share parameter with ram_flags
tests/acceptance/virtio-gpu.py: provide kernel and initrd hashes
tests/acceptance/virtio-gpu.py: use virtio-vga-gl
tests/acceptance/virtio-gpu.py: combine kernel command line
tests/acceptance/virtio-gpu.py: combine CPU tags
tests/acceptance/virtio-gpu.py: combine x86_64 arch tags
tests/acceptance/virtio-gpu.py: use require_accelerator()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
By providing kernel and initrd hashes, the test guarantees the
integrity of the images used and avoids the warnings set by
fetch_asset() when hashes are lacking.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210714174051.28164-7-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Since 49afbca3b, the use of an optional virgl renderer is not
available anymore, and since b36eb8860f, the way to choose a GL based
rendered is to use the "virtio-vga-gl" device.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210714174051.28164-6-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Both tests use the same kernel command line arguments, so there's no
need to have a common and then an additional set of arguments.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210714174051.28164-5-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Like previously done with the arch tags, all tests use the same CPU
value so it's possible to combine them at the class level.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210714174051.28164-4-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The test class in question is x86_64 specific, so it's possible to set
the tags at the class level.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210714174051.28164-3-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Since efe30d501 there's a shorthand for requiring specific
accelerators, and canceling the test if it's not available.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210714174051.28164-2-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Because commit f4063f9c31 ("meson: Introduce target-specific
Kconfig") ended being merged after commit 582079c9d2
("hw/tricore: Add testdevice for tests in tests/tcg/"), we
inadvertently added a symbol clash causing the build not to include
the testboard needed for check-tcg.
Fixes: f4063f9c31 ("meson: Introduce target-specific Kconfig")
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210720114057.32053-2-alex.bennee@linaro.org>
[PMD: Updated description mentioning commits merged]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
The ATI VGA device isn't a requisite for the Pegasos2 machine
because Linux only uses the serial console; see commit ba7e5ac18e
("hw/ppc: Add emulation of Genesi/bPlan Pegasos II") for rationale.
Using the default devices we don't have any problem:
$ qemu-system-ppc -M pegasos2
qemu-system-ppc: standard VGA not available
But when trying to explicitly use the ATI device we get an error:
$ qemu-system-ppc -M pegasos2 -vga none -bios pegasos2.rom -device ati-vga,romfile=
qemu-system-ppc: -device ati-vga,romfile=: 'ati-vga' is not a valid device model name
Add it as an implicit Kconfig dependency.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210515173716.358295-13-philmd@redhat.com>
Acked-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
When building the Pegasos2 machine stand-alone we get:
$ qemu-system-ppc -M pegasos2 -bios pegasos2.rom
ERROR:qom/object.c:714:object_new_with_type: assertion failed: (type != NULL)
Bail out! ERROR:qom/object.c:714:object_new_with_type: assertion failed: (type != NULL)
Looking at the backtraces:
Thread 1 "qemu-system-ppc" received signal SIGABRT, Aborted.
(gdb) bt
#0 0x00007ffff53877d5 in raise () at /lib64/libc.so.6
#1 0x00007ffff5370895 in abort () at /lib64/libc.so.6
#2 0x00007ffff6dc4b6c in g_assertion_message_expr.cold () at /lib64/libglib-2.0.so.0
#3 0x00007ffff6e229ff in g_assertion_message_expr () at /lib64/libglib-2.0.so.0
#4 0x0000555555a0c8f4 in object_new_with_type (type=0x0) at qom/object.c:714
#5 0x0000555555a0c9d5 in object_new (typename=0x555555c7afe4 "isa-pit") at qom/object.c:747
#6 0x0000555555a053b8 in qdev_new (name=0x555555c7afe4 "isa-pit") at hw/core/qdev.c:153
#7 0x00005555557cdd05 in isa_new (name=0x555555c7afe4 "isa-pit") at hw/isa/isa-bus.c:160
#8 0x00005555557cf518 in i8254_pit_init (bus=0x55555603d140, base=64, isa_irq=0, alt_irq=0x0) at include/hw/timer/i8254.h:54
#9 0x00005555557d12f9 in vt8231_realize (d=0x5555563d9770, errp=0x7fffffffcc28) at hw/isa/vt82c686.c:704
(gdb) bt
#0 0x00007ffff54bd7d5 in raise () at /lib64/libc.so.6
#1 0x00007ffff54a6895 in abort () at /lib64/libc.so.6
#2 0x00005555558f7796 in object_new (typename=0x555555ad4889 "isa-parallel") at qom/object.c:749
#3 object_new (typename=type0x555555ad4889 "isa-parallel") at qom/object.c:743
#4 0x00005555558f0d46 in qdev_new (name=0x555555ad4889 "isa-parallel") at hw/core/qdev.c:153
#5 0x000055555576b669 in isa_new (name=0x555555ad4889 "isa-parallel") at hw/isa/isa-bus.c:160
#6 0x000055555576bbe8 in isa_superio_realize (dev=0x555555f15910, errp=<optimized out>) at hw/isa/isa-superio.c:54
#7 0x000055555576d5ed in via_superio_realize (d=0x555555f15910, errp=0x7fffffffcb30) at hw/isa/vt82c686.c:292
#8 0x00005555558f12c1 in device_set_realized (obj=<optimized out>, ...) at hw/core/qdev.c:761
#9 0x00005555558f5066 in property_set_bool (obj=0x555555f15910, ..., errp=0x7fffffffcbb0) at qom/object.c:2262
#10 0x00005555558f7f38 in object_property_set (obj=0x555555f15910, name=0x555555b1b1e3 "realized", ...) at qom/object.c:1407
#11 0x00005555558fb2d0 in object_property_set_qobject (obj=0x555555f15910, name=0x555555b1b1e3 "realized", ...) at qom/qom-qobject.c:28
#12 0x00005555558f8525 in object_property_set_bool (obj=0x555555f15910, name=0x555555b1b1e3 "realized", ...) at qom/object.c:1477
#13 0x00005555558f18ee in qdev_realize (dev=0x555555f15910, bus=0x55555602a610, errp=<optimized out>) at hw/core/qdev.c:389
#14 0x00005555558f197f in qdev_realize_and_unref (dev=0x555555f15910, bus=0x55555602a610, errp=<optimized out>) at hw/core/qdev.c:396
#15 0x000055555576b709 in isa_realize_and_unref (errp=<optimized out>, bus=0x55555602a610, dev=0x555555f15910) at hw/isa/isa-bus.c:179
#16 isa_create_simple (bus=0x55555602a610, name=0x555555adc33b "vt8231-superio") at hw/isa/isa-bus.c:173
#17 0x000055555576d9b7 in vt8231_realize (d=0x555556186a50, errp=<optimized out>) at hw/isa/vt82c686.c:706
The "isa-pit" type (TYPE_I8254) and "isa-parallel" are missing. Add them.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20210515173716.358295-12-philmd@redhat.com>
[PMD: Added "isa-parallel" later]
The VT82C686 device model misses various dependencies:
/usr/bin/ld: libcommon.fa.p/hw_isa_vt82c686.c.o: in function `vt82c686b_realize':
hw/isa/vt82c686.c:622: undefined reference to `i8259_init'
/usr/bin/ld: hw/isa/vt82c686.c:624: undefined reference to `i8257_dma_init'
/usr/bin/ld: hw/isa/vt82c686.c:627: undefined reference to `mc146818_rtc_init'
Add them.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20210515173716.358295-11-philmd@redhat.com>
Looking at the MV64341 model source, there is a dependency on the
8259 interrupt controller:
523 case MV64340_PCI_1_INTERRUPT_ACKNOWLEDGE_VIRTUAL_REG:
524 /* FIXME: Should this be sent via the PCI bus somehow? */
525 if (s->gpp_int_level && (s->gpp_value & BIT(31))) {
526 ret = pic_read_irq(isa_pic);
527 }
528 break;
Add it to Kconfig to avoid the following build failure:
/usr/bin/ld: libcommon.fa.p/hw_pci-host_mv64361.c.o: in function `mv64361_read':
hw/pci-host/mv64361.c:526: undefined reference to `isa_pic'
/usr/bin/ld: hw/pci-host/mv64361.c:526: undefined reference to `pic_read_irq'
Fixes: dcdf98a901 ("hw/pci-host: Add emulation of Marvell MV64361 PPC system controller")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210515173716.358295-10-philmd@redhat.com>
qemu can't start a xen vm after commit d8fb7d0969
"vl: switch -M parsing to keyval" with:
$ ./qemu-system-i386 -M xenfv
Unexpected error in object_property_find_err() at ../qom/object.c:1298:
qemu-system-i386: Property 'xenfv-3.1-machine.accel' not found
Aborted (core dumped)
The default_machine_opts handling doesn't process the legacy machine
options like "accel". Call qemu_apply_legacy_machine_options to provide
the legacy handling.
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Message-Id: <20210713021552.19110-1-jandryuk@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The leak is basically impossible to reach, since the only common way
to get ferror(fp) is by passing a directory to -readconfig. In that
case, the error occurs before qdict is set to anything non-NULL.
However, it's theoretically possible to get there after an EIO.
Cc: armbru@redhat.com
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Fixes: f7544edcd3 ("qemu-config: add error propagation to qemu_config_parse", 2021-03-06)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Ensure that the callback to qemu_config_foreach is never called upon
an error, by moving the invocation before the "out" label.
Cc: armbru@redhat.com
Fixes: 3770141139 ("qemu-config: parse configuration files to a QDict", 2021-06-04)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Passing fixed-iothread=true should make iothread conflicts fatal,
whereas fixed-iothread=false should not.
Combine the second case with an error condition that is checked after
the iothread is handled, to verify that qemu does not crash if there is
such an error after changing the iothread failed.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210624083825.29224-3-mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Tested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When invoking block-export-add with some iothread and
fixed-iothread=false, and changing the node's iothread fails, the error
is supposed to be ignored.
However, it is still stored in *errp, which is wrong. If a second error
occurs, the "*errp must be NULL" assertion in error_setv() fails:
qemu-system-x86_64: ../util/error.c:59: error_setv: Assertion
`*errp == NULL' failed.
So if fixed-iothread=false, we should ignore the error by passing NULL
to bdrv_try_set_aio_context().
Fixes: f51d23c80a
("block/export: add iothread and fixed-iothread options")
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210624083825.29224-2-mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Most probably this fake backing child doesn't work anyway (see notes
about it in a8a4d15c1c).
Still, since 25f78d9e2d drivers are required to set
.supports_backing if they want to call bdrv_set_backing_hd, so now
vvfat just doesn't work because of this check.
Let's finally drop this fake backing file.
Fixes: 25f78d9e2d
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210715124853.13335-1-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Remove the workaround introduced in commit
6ecbc6c526
"replication: Avoid blk_make_empty() on read-only child".
It is not needed anymore since s->hidden_disk is guaranteed to be
writable when secondary_do_checkpoint() runs. Because replication_start(),
_do_checkpoint() and _stop() are only called by COLO migration code
and COLO-migration activates all disks via bdrv_invalidate_cache_all()
before it calls these functions.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <d3acfad43879e9f376bffa7dd797ae74d0a7c81a.1626619393.git.lukasstraub2@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The replication driver needs access to the children block-nodes of
it's child so it can issue bdrv_make_empty() and bdrv_co_pwritev()
to manage the replication. However, it does this by directly copying
the BdrvChilds, which is wrong.
Fix this by properly attaching the block-nodes with
bdrv_attach_child() and requesting the required permissions.
This ultimatively fixes a potential crash in replication_co_writev(),
because it may write to s->secondary_disk if it is in state
BLOCK_REPLICATION_FAILOVER_FAILED, without requesting write
permissions first. And now the workaround in
secondary_do_checkpoint() can be removed.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <5d0539d729afb8072d0d7cde977c5066285591b4.1626619393.git.lukasstraub2@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In preparation for the next patch, initialize s->hidden_disk and
s->secondary_disk later and replace access to them with local variables
in the places where they aren't initialized yet.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1eb9dc179267207d9c7eccaeb30761758e32e9ab.1626619393.git.lukasstraub2@web.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
s->active_disk is bs->file. Remove it and use local variables instead.
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <2534f867ea9be5b666dfce19744b7d4e2b96c976.1626619393.git.lukasstraub2@web.de>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Commit 7abb479c7a ("PPC: E500: Add FSL I2C controller and integrate
RTC with it") added a global dependency on the DS1338 model, instead
of a machine one (via Kconfig). This gives trouble when building
standalone machines not exposing I2C bus:
The following clauses were found for DS1338
CONFIG_DS1338=y
config DS1338 depends on I2C
Fix by selecting the DS1338 symbol in the single machine requiring
it, the E500.
Fixes: 7abb479c7a ("PPC: E500: Add FSL I2C controller and integrate RTC with it")
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210513163858.3928976-9-philmd@redhat.com>
