- Enables qemu_config for riscv32, sparc 64-bit, PowerPC 32-bit BE and
64-bit LE.
- Enables CONFIG_SPARC32 to clearly differentiate between sparc 32-bit
and 64-bit configurations.
- Enables CONFIG_CPU_BIG_ENDIAN to clearly differentiate between powerpc
LE and BE configurations.
- Add feature to list available architectures to kunit tool.
- Fixes to bugs and changes to documentation.
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Merge tag 'linux_kselftest-kunit-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- Enable qemu_config for riscv32, sparc 64-bit, PowerPC 32-bit BE and
64-bit LE
- Enable CONFIG_SPARC32 to clearly differentiate between sparc 32-bit
and 64-bit configurations
- Enable CONFIG_CPU_BIG_ENDIAN to clearly differentiate between powerpc
LE and BE configurations
- Add feature to list available architectures to kunit tool
- Fixes to bugs and changes to documentation
* tag 'linux_kselftest-kunit-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Fix wrong parameter to kunit_deactivate_static_stub()
kunit: tool: add test counts to JSON output
Documentation: kunit: improve example on testing static functions
kunit: executor: Remove const from kunit_filter_suites() allocation type
kunit: qemu_configs: Disable faulting tests on 32-bit SPARC
kunit: qemu_configs: Add 64-bit SPARC configuration
kunit: qemu_configs: sparc: Explicitly enable CONFIG_SPARC32=y
kunit: qemu_configs: Add PowerPC 32-bit BE and 64-bit LE
kunit: qemu_configs: powerpc: Explicitly enable CONFIG_CPU_BIG_ENDIAN=y
kunit: tool: Implement listing of available architectures
kunit: qemu_configs: Add riscv32 config
kunit: configs: Enable CONFIG_INIT_STACK_ALL_PATTERN in all_tests
The 32-bit sparc configuration (--arch sparc) crashes on
the kunit_fault_test. It's known that some architectures don't handle
deliberate segfaults in kernel mode well, so there's a config switch to
disable tests which rely upon it by default.
Use this for the sparc config, making sure the default config for it
passes.
Link: https://lore.kernel.org/r/20250416093826.1550040-1-davidgow@google.com
Fixes: 87c9c16317 ("kunit: tool: add support for QEMU")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The configuration generated by kunit ends up with a 32bit configuration.
A new kunit configuration for 64bit is to be added.
To make the difference clearer spell out the variant in the kunit
reference config.
Link: https://lore.kernel.org/r/20250415-kunit-qemu-sparc64-v1-1-253906f61102@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Add basic configs to run kunit tests on some more PowerPC variants.
Link: https://lore.kernel.org/r/20250415-kunit-ppc-v1-2-f5a170264147@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The configuration generated by kunit ends up with big endian.
A new kunit configuration for little endian is to be added.
To make the difference clearer spell out the endianness in the kunit
reference config.
Link: https://lore.kernel.org/r/20250415-kunit-ppc-v1-1-f5a170264147@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The default SH kunit configuration sets CONFIG_CMDLINE_OVERWRITE which
completely disregards the cmdline passed from the bootloader/QEMU in favor
of the builtin CONFIG_CMDLINE.
However the kunit tool needs to pass arguments to the in-kernel kunit core,
for filters and other runtime parameters.
Enable CONFIG_CMDLINE_EXTEND instead, so kunit arguments are respected.
Link: https://lore.kernel.org/r/20250407-kunit-sh-v1-1-f5432a54cf2f@linutronix.de
Fixes: 8110a3cab0 ("kunit: tool: Add support for SH under QEMU")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The driver for the 8250 console is not used, as no port is found.
Instead the prom0 bootconsole is used the whole time.
The prom driver translates '\n' to '\r\n' before handing of the message
off to the firmware. The firmware performs the same translation again.
In the final output produced by QEMU each line ends with '\r\r\n'.
This breaks the kunit parser, which can only handle '\r\n' and '\n'.
Use the Zilog console instead. It works correctly, is the one documented
by the QEMU manual and also saves a bit of codesize:
Before=4051011, After=4023326, chg -0.68%
Observed on QEMU 9.2.0.
Link: https://lore.kernel.org/r/20250214-kunit-qemu-sparc-console-v1-1-ba1dfdf8f0b1@linutronix.de
Fixes: 87c9c16317 ("kunit: tool: add support for QEMU")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Use KVM or HVF if supported by the QEMU binary and available on the
system.
This produces a nice improvement on my Apple M3 Pro running macOS 14.7:
Before:
./tools/testing/kunit/kunit.py exec --arch arm64
[HH:MM:SS] Elapsed time: 10.145s
After:
./tools/testing/kunit/kunit.py exec --arch arm64
[HH:MM:SS] Elapsed time: 1.773s
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
QEMU for LoongArch does not yet support shutdown/restart through ACPI.
Use the pvpanic driver to enable shutdowns.
This requires 9.1.0 for shutdown support in pvpanic, but that is the
requirement of kunit on LoongArch anyways.
Link: https://lore.kernel.org/r/20241111-kunit-loongarch-v2-3-7676eb5f2da3@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Add a basic config to run kunit tests on LoongArch.
This requires QEMU 9.1.0 or later for the necessary direct kernel boot
support.
Link: https://lore.kernel.org/r/20241111-kunit-loongarch-v2-1-7676eb5f2da3@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The ARCH_ and SOC_ versions of this symbol have persisted for quite a
while now in parallel. Generated .config files from previous LTS kernels
should have both. Finally remove SOC_VIRT and update all config files
using it.
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
While it probably doesn't make a huge difference given the current KUnit
coverage we will get the best coverage of arm64 architecture features if
we specify -cpu=max rather than picking a specific CPU, this will include
all architecture features that qemu supports including many which have not
yet made it into physical implementations.
Due to performance issues emulating the architected pointer authentication
algorithm it is recommended to use the implementation defined algorithm
that qemu has instead, this should make no meaningful difference to the
coverage and will run the tests faster.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Add basic support to run SH under QEMU via kunit_tool using the
virtualized r2d platform.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Add basic support to run m68k under QEMU via kunit_tool.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
When running a RISC-V test kernel under QEMU, we need an OpenSBI BIOS
file. In the original QEMU support patchset, kunit_tool would optionally
download this file from GitHub if it didn't exist, using wget.
These days, it can usually be found in the distro's qemu-system-riscv
package, and is located in /usr/share/qemu on all the distros I tried
(Debian, Arch, OpenSUSE). Use this file, and thereby don't do any
downloading in kunit_tool.
In addition, we used to shell out to whatever 'wget' was in the path,
which could have potentially been used to trick the developer into
running another binary. By not using wget at all, we nicely sidestep
this issue.
Cc: Xu Panda <xu.panda@zte.com.cn>
Fixes: 87c9c16317 ("kunit: tool: add support for QEMU")
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: David Gow <davidgow@google.com>
Tested-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
We're currently using the x86_64 qemu for i386 builds. While this is not
incorrect, it's probably more sensible to use the i386 one, which will
at least fail properly if we accidentally were to build a 64-bit kernel.
Signed-off-by: David Gow <davidgow@google.com>
Tested-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The config for the serial console for riscv,
CONFIG_SERIAL_EARLYCON_RISCV_SBI, added a dependency,
CONFIG_RISCV_SBI_V01, at some point, so add that in to the base arch
config.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Note: this potentially breaks custom qemu_configs if people are using
them! But the fix for them is simple, don't specify multiple arguments
in one string and don't add on a redundant ''.
It feels a bit iffy to be using a shell in the first place.
There's the usual shenanigans where people could pass in arbitrary shell
commands via --kernel_arg (since we're just adding '' around the
kernel_cmdline) or via a custom qemu_config.
This isn't too much of a concern given the nature of this script (and
the qemu_config file is in python, you can do w/e you want already).
But it does have some other drawbacks.
One example of a kunit-specific pain point:
If the relevant qemu binary is missing, we get output like this:
> /bin/sh: line 1: qemu-system-aarch64: command not found
This in turn results in our KTAP parser complaining about
missing/invalid KTAP, but we don't directly show the error!
It's even more annoying to debug when you consider --raw_output only
shows KUnit output by default, i.e. you need --raw_output=all to see it.
Whereas directly invoking the binary, Python will raise a
FileNotFoundError for us, which is a noisier but more clear.
Making this change requires
* splitting parameters like ['-m 256'] into ['-m', '256'] in
kunit/qemu_configs/*.py
* change [''] to [] in kunit/qemu_configs/*.py since otherwise
QEMU fails w/ 'Device needs media, but drive is empty'
* dropping explicit quoting of the kernel cmdline
* using shlex.quote() when we print what command we're running
so the user can copy-paste and run it
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Add basic support to run QEMU via kunit_tool. Add support for i386,
x86_64, arm, arm64, and a bunch more.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Tested-by: David Gow <davidgow@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
