bdrv_iterate_format (which is currently only used for printing out the
formats supported by the block layer) doesn't take format whitelisting
into account.
This creates a problem for tests: they enumerate supported formats to
decide which tests to enable, but then discover that QEMU doesn't let
them actually use some of those formats.
To avoid that, exclude formats that are not whitelisted from
enumeration, if whitelisting is in use. Since we have separate
whitelists for r/w and r/o, take this a parameter to
bdrv_iterate_format, and print two lists of supported formats (r/w and
r/o) in main qemu.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Replace the binary mode with the default text one when *.notrun
files are opened for skipped tests. That change is made for the
compatibility with Python 3 which returns error otherwise.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
QEMU 2.12 (commit 1221fe6f63) introduced
a new setting called l2-cache-entry-size that allows making entries on
the qcow2 L2 cache smaller than the cluster size.
I have been performing several tests with different cluster and entry
sizes and all of them show that reducing the entry size (aka L2 slice)
consistently improves I/O performance, notably during random I/O (all
tests done with sequential I/O show similar results). This is to be
expected because loading and evicting an L2 slice is more expensive
the larger the slice is.
Here are some numbers on fully populated 40GB qcow2 images. The
rightmost column represents the maximum L2 cache size in both cases.
Cluster size = 64 KB
|-------------+--------------+--------------+--------------|
| | 1MB L2 cache | 3MB L2 cache | 5MB L2 cache |
|-------------+--------------+--------------+--------------|
| 4KB slices | 6545 IOPS | 12045 IOPS | 55680 IOPS |
| 16KB slices | 5177 IOPS | 9798 IOPS | 56278 IOPS |
| 64KB slices | 2718 IOPS | 5326 IOPS | 57355 IOPS |
|-------------+--------------+--------------+--------------|
Cluster size = 256 KB
|--------------+----------------+--------------+-----------------|
| | 512KB L2 cache | 1MB L2 cache | 1280KB L2 cache |
|--------------+----------------+--------------+-----------------|
| 4KB slices | 8539 IOPS | 21071 IOPS | 55417 IOPS |
| 64KB slices | 3598 IOPS | 9772 IOPS | 57687 IOPS |
| 256KB slices | 1415 IOPS | 4120 IOPS | 58001 IOPS |
|--------------+----------------+--------------+-----------------|
As can be seen in the numbers, the only exception to the rule is when
the cache is large enough to hold all L2 tables. This is also to be
expected because in this case no cache entry is ever evicted so
reducing its size doesn't bring any benefit.
This patch sets the default L2 cache entry size to 4KB except when the
cache is large enough for the whole disk.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Test 238 does not require the kvm accelerator. Using the qtest
accelerator allows the test to run in both non-kvm and non-tcg
environments.
iotests.VM implicitly uses the qtest accelerator and is really the class
that this test should be using. Switch to that instead of
qemu.QEMUMachine.
Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
After consulting Paolo I know why we'd better keep the explicit
aio_poll() in iothread_run(). Document it directly into the code so
that future readers will know the answer from day one.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190306115532.23025-6-peterx@redhat.com
Message-Id: <20190306115532.23025-6-peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We were pushing the context until right before running the gmainloop.
Now since we have everything unconditionally, we can move this
earlier.
One benefit is that now it's done even before init_done_sem, so as
long as the iothread user calls iothread_create() and completes, we
know that the thread stack is ready.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20190306115532.23025-5-peterx@redhat.com
Message-Id: <20190306115532.23025-5-peterx@redhat.com>
[Tweaked comment wording as discussed with Peter Xu.
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Since we've have the gcontext always there, create the main loop
altogether. The iothread_run() is even cleaner.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20190306115532.23025-4-peterx@redhat.com
Message-Id: <20190306115532.23025-4-peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In existing code we create the gcontext dynamically at the first
access of the gcontext from caller. That can bring some complexity
and potential races during using iothread. Since the context itself
is not that big a resource, and we won't have millions of iothread,
let's simply create the gcontext unconditionally.
This will also be a preparation work further to move the thread
context push operation earlier than before (now it's only pushed right
before we want to start running the gmainloop).
Removing the g_once since it's not necessary, while introducing a new
run_gcontext boolean to show whether we want to run the gcontext.
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20190306115532.23025-3-peterx@redhat.com
Message-Id: <20190306115532.23025-3-peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Only sending an init-done message using lock+cond seems an overkill to
me. Replacing it with a simpler semaphore.
Meanwhile, init the semaphore unconditionally, then we can destroy it
unconditionally too in finalize which seems cleaner.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20190306115532.23025-2-peterx@redhat.com
Message-Id: <20190306115532.23025-2-peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
cirrus-ci.com also has the possibility to run CI tasks on macOS.
Since most of the QEMU developers do not have access to macOS yet,
let's add a CI pipeline for this operating system here, too.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Ed Maste <emaste@freebsd.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Bash is not always installed as /bin/bash. In particular on OpenBSD,
the package installs it in /usr/local/bin.
Use the 'env' shebang to search bash in the $PATH.
Reviewed-by: Kamil Rytarowski <n54@gmx.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Spotted by ASAN.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Fixes: ae31fb5491 and 4d3f50eb48
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We can eliminate an extra TB in this case, which merely
loads a "return address" into rn.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For priv levels 1 & 2, we were doing so from do_ibranch_priv.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
g_test_message() takes care of the newline on its own, so we
should not use \n in the strings here.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Introduced in 64b40bc54a, this definition is no more used since
a0b753dfd3. Remove it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Move qdict-test-data.txt to the tests/data/qobject/ subdirectory,
and remove the unnecessary symlinking.
(See 4b2ff65a1f for similar test-data cleanup).
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[thuth: Fix conflict in MAINTAINERS]
Signed-off-by: Thomas Huth <thuth@redhat.com>
%-softmmu.mak only keep boards and optional device
definitions in Kconfig mode.
Note that USB_OHCI was missing (it was brought in via pci.mak,
but r2d needs the sysbus version) and SERIAL is not used.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Instead of hard-coding all config switches in the config file
default-configs/s390x-softmmu.mak, let's use the new Kconfig files
to express the necessary dependencies: The S390_CCW_VIRTIO config switch
for the "s390-ccw-virtio" machine now selects all non-optional devices.
And since we already have the VIRTIO_PCI and VIRTIO_MMIO config switches
for the other two virtio transports, this patch also introduces a new
config switch VIRTIO_CCW for the third, s390x-specific virtio transport,
so that all three virtio transports are now handled in the same way.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
%-softmmu.mak only keep boards and optional device
definitions in Kconfig mode.
Moxie does not use VGA, ISA or RTC, and only has a memory-mapped
serial port. Adjust for the correct dependencies.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
%-softmmu.mak only keep boards and optional device
definitions in Kconfig mode.
Note that the Dino board uses a memory mapped 16550 UART and
therefore only CONFIG_SERIAL is needed, not CONFIG_SERIAL_ISA.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This makes it much easier if the users want to disable some of
the embedded machines for their builds.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Most of the dependencies are now directly selected by the SAM460EX
switch. We can drop CONFIG_VGA_CIRRUS since this device is already
selected automatically when CONFIG_PCI_DEVICES is set.
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This will make it for example easier if the users want to disable
one of the two machines for their builds.
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Select the required devices in hw/ppc/Kconfig instead, so that
ppc-softmmu.mak only contains the user-selectable PREP switch.
Plug-in devices like NE2000_ISA are pulled in automatically by the
Kconfig build system now.
Cc: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The POWERNV switch should always select ISA_IPMI_BT, then the other
IPMI options are turned on automatically now.
CONFIG_DIMM should always be selected by the pseries machine,
which in turn depends on CONFIG_MEM_DEVICE since DIMM implements
this interface.
CONFIG_VIRTIO_VGA can be dropped from default-configs/ppc64-softmmu.mak
completely since this device is already automatically enabled via
hw/display/Kconfig now.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
%-softmmu.mak only keep boards definitions in Kconfig mode.
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20190123065618.3520-43-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20190123065618.3520-36-yang.zhong@intel.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This automatically removes the TPM backends from the
binary altogether if no front-ends are selected.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
