Coverity reports that we don't check the error result of fdt_pack(), so
let's save the result and assert that it is 0.
Fixes: Coverity CID 1458136
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 07325315b49d5555269f76094e4bc5296e0643b9.1626303527.git.alistair.francis@wdc.com
Currently the firmware dynamic info (fw_dyn) is put right after
the reset vector, which is not 8-byte aligned on RV64. OpenSBI
fw_dynamic uses ld to read contents from 'struct fw_dynamic_info',
which expects fw_dyn to be on the 8-byte boundary, otherwise the
misaligned load exception may happen. Fortunately this does not
cause any issue on QEMU, as QEMU does support misaligned load.
RV32 does not have any issue as it is 4-byte aligned already.
Change to make sure it is 8-byte aligned which works for both
RV32 and RV64.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210708143319.10441-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
At present the CLINT timebase frequency is set to 10MHz on sifive_u,
but on the real hardware the timebase frequency is 1Mhz.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210706102616.1922469-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This adds a new section in the documentation to demonstrate how to
use the new direct kernel boot feature for Microchip Icicle Kit,
other than the HSS bootflow, using an upstream U-Boot v2021.07 image
as an example.
It also updates the truth table to have a new '-dtb' column which is
required by direct kernel boot.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210706095045.1917913-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The specification mandates for certain bits to be hardwired in the
hypervisor delegation registers. This was not being enforced.
Signed-off-by: Jose Martins <josemartins90@gmail.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210522155902.374439-1-josemartins90@gmail.com
[ Changes by AF:
- Improve indentation
- Convert delegable_excps to a #define to avoid failures with GCC 8
]
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This adds detailed documentation for RISC-V `virt` machine,
including the following information:
- Supported devices
- Hardware configuration information
- Boot options
- Running Linux kernel
- Running U-Boot
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210627142816.19789-2-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
It's Core *Local* Interruptor, not 'Level'.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210627142816.19789-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The following check:
if (!env->debugger && !riscv_cpu_fp_enabled(env)) {
return -RISCV_EXCP_ILLEGAL_INST;
}
is redundant in fflags/frm/fcsr read/write routines, as the check was
already done in fs().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210627120604.11116-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
%s/CSP/CSR
%s/thie/the
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210627115716.3552-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
- New SMMUv3 and Intel IOMMU tests
- Respect "cpu" tags and reduce boiler plate code
- Improved logging of qemu execution output
- Other misc improvements
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Merge remote-tracking branch 'remotes/cleber-gitlab/tags/python-next-pull-request' into staging
Python and Acceptance Tests
- New SMMUv3 and Intel IOMMU tests
- Respect "cpu" tags and reduce boiler plate code
- Improved logging of qemu execution output
- Other misc improvements
# gpg: Signature made Tue 13 Jul 2021 22:11:36 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: (23 commits)
tests/acceptance/cpu_queries.py: use the proper logging channels
tests/acceptance/linux_ssh_mips_malta.py: drop identical setUp
Acceptance tests: do not try to reuse packages from the system
python: Configure tox to skip missing interpreters
tests/acceptance: Handle cpu tag on x86_cpu_model_versions tests
tests/acceptance: Add set_vm_arg() to the Test class
python/qemu: Add args property to the QEMUMachine class
tests/acceptance: Tagging tests with "cpu:VALUE"
tests/acceptance: Let the framework handle "cpu:VALUE" tagged tests
tests/acceptance: Fix mismatch on cpu tagged tests
tests/acceptance: Automatic set -cpu to the test vm
tests/acceptance: Tag NetBSD tests as 'os:netbsd'
avocado_qemu: Add Intel iommu tests
avocado_qemu: Add SMMUv3 tests
Acceptance Tests: Add default kernel params and pxeboot url to the KNOWN_DISTROS collection
avocado_qemu: Fix KNOWN_DISTROS map into the LinuxDistro class
tests/acceptance: Ignore binary data sent on serial console
Acceptance Tests: support choosing specific distro and version
Acceptance Tests: move definition of distro checksums to the framework
Acceptance Tests: rename attribute holding the distro image checksum
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implement x86 fcs:fip, fds:fdp.
Trivial x86 watchpoint cleanup.
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Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-misc-20210713' into staging
Cleanup alpha, hppa, or1k wrt tcg_constant_tl.
Implement x86 fcs:fip, fds:fdp.
Trivial x86 watchpoint cleanup.
# gpg: Signature made Tue 13 Jul 2021 17:36:29 BST
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth-gitlab/tags/pull-misc-20210713:
target/hppa: Clean up DisasCond
target/hppa: Use tcg_constant_*
target/openrisc: Use dc->zero in gen_add, gen_addc
target/openrisc: Cache constant 0 in DisasContext
target/openrisc: Use tcg_constant_tl for dc->R0
target/openrisc: Use tcg_constant_*
target/alpha: Use tcg_constant_* elsewhere
target/alpha: Use tcg_constant_i64 for zero and lit
target/alpha: Use dest_sink for HW_RET temporary
target/alpha: Store set into rx flag
target/i386: Correct implementation for FCS, FIP, FDS and FDP
target/i386: Split out do_fninit
target/i386: Trivial code motion and code style fix
target/i386: Tidy hw_breakpoint_remove
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The test contains methods for the proper log of test related
information. Let's use that and remove the print and the unused
logging import.
Reference: https://avocado-framework.readthedocs.io/en/87.0/api/test/avocado.html#avocado.Test.log
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210415215141.1865467-6-crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
These tests' setUp do not do anything beyong what their base class do.
And while they do decorate the setUp() we can decorate the classes
instead, so no functionality is lost here.
This is possible because since Avocado 76.0 we can decorate setUp()
directly.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210415215141.1865467-4-crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
[PMD: added note to commit message about Avocado feature/version]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The premise behind the original behavior is that it would save people
from downloading Avocado (and other dependencies) if already installed
on the system. To be honest, I think it's extremely rare that the
same versions described as dependencies will be available on most
systems. But, the biggest motivations here are that:
1) Hacking on QEMU in the same system used to develop Avocado leads
to confusion with regards to the exact bits that are being used;
2) Not reusing Python packages from system wide installations gives
extra assurance that the same behavior will be seen from tests run
on different machines;
With regards to downloads, pip already caches the downloaded wheels
and tarballs under ~/.cache/pip, so there should not be more than
one download even if the venv is destroyed and recreated.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210415215141.1865467-3-crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Currently tox tests against the installed interpreters, however if any
supported interpreter is absent then it will return fail. It seems not
reasonable to expect developers to have all supported interpreters
installed on their systems. Luckily tox can be configured to skip
missing interpreters.
This changed the tox setup so that missing interpreters are skipped by
default. On the CI, however, we still want to enforce it tests
against all supported. This way on CI the
--skip-missing-interpreters=false option is passed to tox.
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210630184546.456582-1-wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
I thought I'd sent the last PR before the 6.1 soft freeze, but
unfortunately I need one more. This last minute one puts in a SLOF
update, along with a couple of bugfixes.
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Merge remote-tracking branch 'remotes/dg-gitlab/tags/ppc-for-6.1-20210713' into staging
ppc patch queue 2021-07-13
I thought I'd sent the last PR before the 6.1 soft freeze, but
unfortunately I need one more. This last minute one puts in a SLOF
update, along with a couple of bugfixes.
# gpg: Signature made Tue 13 Jul 2021 03:07:20 BST
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dg-gitlab/tags/ppc-for-6.1-20210713:
mv64361: Remove extra break from a switch case
pseries: Update SLOF firmware image
ppc/pegasos2: Allow setprop in VOF
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some test cases on x86_cpu_model_versions.py are corner cases because they
need to pass extra options to the -cpu argument. Once the avocado_qemu
framework will set -cpu automatically, the value should be reset. This changed
those tests so to call set_vm_arg() to overwrite the -cpu value.
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210430133414.39905-8-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The set_vm_arg method is added to avocado_qemu.Test class on this
change. Use that method to set (or replace) an argument to the list of
arguments given to the QEMU binary.
Suggested-by: Cleber Rosa <crosa@redhat.com>
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210430133414.39905-7-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
This added the args property to QEMUMachine so that users of the class
can access and handle the list of arguments to be given to the QEMU
binary.
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210430133414.39905-6-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The existing tests which are passing "-cpu VALUE" argument to the vm object
are now properly "cpu:VALUE" tagged, so letting the avocado_qemu framework to
handle that automatically.
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210430133414.39905-5-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The tests that are already tagged with "cpu:VALUE" don't need to add
"-cpu VALUE" to the list of arguments of the vm object because the avocado_qemu
framework is able to handle it automatically.
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210430133414.39905-4-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
There are test cases on machine_mips_malta.py and tcg_plugins.py files
where the cpu tag does not correspond to the value actually given to the QEMU
binary. This fixed those tests tags.
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210430133414.39905-3-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
This introduces a new feature to the functional tests: automatic setting of
the '-cpu VALUE' option to the created vm if the test is tagged with
'cpu:VALUE'. The 'cpu' property is made available to the test object as well.
For example, for a simple test as:
def test(self):
"""
🥑 tags=cpu:host
"""
self.assertEqual(self.cpu, "host")
self.vm.launch()
The resulting QEMU evocation will be like:
qemu-system-x86_64 -display none -vga none \
-chardev socket,id=mon,path=/var/tmp/avo_qemu_sock_pdgzbgd_/qemu-1135557-monitor.sock \
-mon chardev=mon,mode=control -cpu host
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210430133414.39905-2-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Avocado allows us to select set of tests using tags.
When wanting to run all tests using a NetBSD guest OS,
it is convenient to have them tagged, add the 'os:netbsd'
tag.
It allows one to run the NetBSD tests with:
$ avocado --show=app,console run -t os:netbsd tests/acceptance/
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210623180021.898286-4-f4bug@amsat.org>
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
[PMD: ammend the commit message with example command]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Add new tests checking the good behavior of the SMMUv3 protecting
2 virtio pci devices (block and net). We check the guest boots and
we are able to install a package. Different guest configs are tested:
standard, passthrough an strict=0. This is tested with both fedora 31 and
33. The former uses a 5.3 kernel without range invalidation whereas the
latter uses a 5.8 kernel that features range invalidation.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210706131729.30749-4-eric.auger@redhat.com>
[CR: split long lines]
[CR: added MAINTAINERS entry]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
When running LinuxTests we may need to run the guest with
custom params. It is practical to store the pxeboot URL
and the default kernel params so that the
tests just need to fetch those and augment the kernel params.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210706131729.30749-3-eric.auger@redhat.com>
[CR: split long lines]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
As the KNOWN_DISTROS grows, more loosely methods will be created in
the avocado_qemu/__init__.py file.
Let's refactor the code so that KNOWN_DISTROS and related methods are
packaged in a class
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20210706131729.30749-2-eric.auger@redhat.com>
[CR: moved aarch64 definition from patch 2 to 1]
[CR: protect get() when arch is not defined]
[CR: split long lines]
Acked-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
If a guest sends binary data on the serial console, we get:
File "tests/acceptance/avocado_qemu/__init__.py", line 92,
in _console_interaction msg = console.readline().strip()
File "/usr/lib64/python3.8/codecs.py", line 322,
in decode (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 2: invalid start byte
Since we use the console with readline(), fix it the easiest
way possible: ignore binary data (all current tests compare
text string anyway).
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210515134555.307404-2-f4bug@amsat.org>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The tests based on the LinuxTest class give the test writer a ready to
use guest operating system, currently pinned to Fedora 31.
With this change, it's now possible to choose different distros and
versions, similar to how other tags and parameter can be set for the
target arch, accelerator, etc.
One of the reasons for this work, is that some development features
depend on updates on the guest side. For instance the tests on
virtiofs_submounts.py, require newer kernels, and may benefit from
running, say on Fedora 34, without the need for a custom kernel.
Please notice that the pre-caching of the Fedora 31 images done during
the early stages of `make check-acceptance` (before the tests are
actually executed) are not expanded here to cover every new image
added. But, the tests will download other needed images (and cache
them) during the first execution.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210414221457.1653745-4-crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Instead of having, by default, the checksum in the tests, and the
definition of tests in the framework, let's keep them together.
A central definition for distributions is available, and it should
allow other known distros to be added more easily.
No behavior change is expected here, and tests can still define
a distro_checksum value if for some reason they want to override
the known distribution information.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210414221457.1653745-3-crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Eric Auger <eric.auger@redhat.com>
[CR: split long lines]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
This renames the attribute that holds the checksum for the image Linux
distribution image used.
The current name of the attribute is not very descriptive. Also, in
preparation for making the distribution used configurable, which will
add distro related parameters, attributes and tags, let's make the
naming of those more uniform.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210414221457.1653745-2-crosa@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[CR: split long lines]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Logs can be very important to debug issues, and currently QEMUMachine
instances will remove logs that are created under the temporary
directories.
With this change, the stdout and stderr generated by the QEMU process
started by QEMUMachine will always be kept along the test results
directory.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210211220146.2525771-6-crosa@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Including its base temporary directory, given that information useful
for debugging can be put there.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20210211220146.2525771-5-crosa@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
The QEMUMachine uses a base temporary directory for all temporary
needs. By setting it to the Avocado's workdir, it's possible to
keep the temporary files during debugging sessions much more
easily by setting the "--keep-tmp" command line option.
Reference: https://avocado-framework.readthedocs.io/en/85.0/api/test/avocado.html#avocado.Test.workdir
Reference:
https://avocado-framework.readthedocs.io/en/85.0/config/index.html#run-keep-tmp
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20210211220146.2525771-4-crosa@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Taking the mutex every time for each dirty bit to clear is too slow, especially
we'll take/release even if the dirty bit is cleared. So far it's only used to
sync with special cases with qemu_guest_free_page_hint() against migration
thread, nothing really that serious yet. Let's move the lock to be upper.
There're two callers of migration_bitmap_clear_dirty().
For migration, move it into ram_save_iterate(). With the help of MAX_WAIT
logic, we'll only run ram_save_iterate() for no more than 50ms-ish time, so
taking the lock once there at the entry. It also means any call sites to
qemu_guest_free_page_hint() can be delayed; but it should be very rare, only
during migration, and I don't see a problem with it.
For COLO, move it up to colo_flush_ram_cache(). I think COLO forgot to take
that lock even when calling ramblock_sync_dirty_bitmap(), where another example
is migration_bitmap_sync() who took it right. So let the mutex cover both the
ramblock_sync_dirty_bitmap() and migration_bitmap_clear_dirty() calls.
It's even possible to drop the lock so we use atomic operations upon rb->bmap
and the variable migration_dirty_pages. I didn't do it just to still be safe,
also not predictable whether the frequent atomic ops could bring overhead too
e.g. on huge vms when it happens very often. When that really comes, we can
keep a local counter and periodically call atomic ops. Keep it simple for now.
Cc: Wei Wang <wei.w.wang@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hailiang Zhang <zhang.zhanghailiang@huawei.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Leonardo Bras Soares Passos <lsoaresp@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210630200805.280905-1-peterx@redhat.com>
Reviewed-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
For each "migrate" command, remember to clear the s->error before going on.
For one reason, when there's a new error it'll be still remembered; see
migrate_set_error() who only sets the error if error==NULL. Meanwhile if a
failed migration completes (e.g., postcopy recovered and finished), we
shouldn't dump an error when calling migrate_fd_cleanup() at last.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210708190653.252961-4-peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Below process could crash qemu with postcopy recovery:
1. (hmp) migrate -d ..
2. (hmp) migrate_start_postcopy
3. [network down, postcopy paused]
4. (hmp) migrate -r $WRONG_PORT
when try the recover on an invalid $WRONG_PORT, cleanup_bh will be cleared
5. (hmp) migrate -r $RIGHT_PORT
[qemu crash on assert(cleanup_bh)]
The thing is we shouldn't cleanup if it's postcopy resume; the error is set
mostly because the channel is wrong, so we return directly waiting for the user
to retry.
migrate_fd_cleanup() should only be called when migration is cancelled or
completed.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210708190653.252961-3-peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
When postcopy pause triggered, we rely on the migration thread to cleanup the
to_dst_file handle, and the return path thread to cleanup the from_dst_file
handle (which is stored in the local variable "rp").
Within the process, from_dst_file cleanup (qemu_fclose) is postponed until it's
setup again due to a postcopy recovery.
It used to work before yank was born; after yank is introduced we rely on the
refcount of IOC to correctly unregister yank function in channel_close(). If
without the early and on-time release of from_dst_file handle the yank function
will be leftover during paused postcopy.
Without this patch, below steps (quoted from Xiaohui) could trigger qemu src
crash:
1.Boot vm on src host
2.Boot vm on dst host
3.Enable postcopy on src&dst host
4.Load stressapptest in vm and set postcopy speed to 50M
5.Start migration from src to dst host, change into postcopy mode when migration is active.
6.When postcopy is active, down the network card(do migration via this network) on dst host.
7.Wait untill postcopy is paused on src&dst host.
8.Before up network card, recover migration on dst host, will get error like following.
9.Ignore the error of step 8, go on recovering migration on src host:
After step 9, qemu on src host will core dump after some seconds:
qemu-kvm: ../util/yank.c:107: yank_unregister_instance: Assertion `QLIST_EMPTY(&entry->yankfns)' failed.
1.sh: line 38: 44662 Aborted (core dumped)
Reported-by: Li Xiaohui <xiaohli@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210708190653.252961-2-peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
When the migration fails or is canceled we wait the end of the unplug
operation to be able to plug it back. But if the unplug operation
is never finished we stop to wait and QEMU emits a warning to inform
the user.
Based-on: 20210629155007.629086-1-lvivier@redhat.com
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20210701131458.112036-1-lvivier@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
backtrace:
'0x00007ffff5f44ec2 in __ibv_dereg_mr_1_1 (mr=0x7fff1007d390) at /home/lizhijian/rdma-core/libibverbs/verbs.c:478
478 void *addr = mr->addr;
(gdb) bt
#0 0x00007ffff5f44ec2 in __ibv_dereg_mr_1_1 (mr=0x7fff1007d390) at /home/lizhijian/rdma-core/libibverbs/verbs.c:478
#1 0x0000555555891fcc in rdma_delete_block (block=<optimized out>, rdma=0x7fff38176010) at ../migration/rdma.c:691
#2 qemu_rdma_cleanup (rdma=0x7fff38176010) at ../migration/rdma.c:2365
#3 0x00005555558925b0 in qio_channel_rdma_close_rcu (rcu=0x555556b8b6c0) at ../migration/rdma.c:3073
#4 0x0000555555d652a3 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:281
#5 0x0000555555d5edf9 in qemu_thread_start (args=0x7fffe88bb4d0) at ../util/qemu-thread-posix.c:541
#6 0x00007ffff54c73f9 in start_thread () at /lib64/libpthread.so.0
#7 0x00007ffff53f3b03 in clone () at /lib64/libc.so.6 '
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Message-Id: <20210708144521.1959614-1-lizhijian@cn.fujitsu.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
The a0_is_n flag is redundant with comparing a0 to cpu_psw_n.
The a1_is_0 flag can be removed by initializing a1 to $0,
which also means that cond_prep can be removed entirely.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Replace uses of tcg_const_* with the allocate and free close together.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
