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147c8f4470
Add unit tests for new ldsx insns. The test includes sign-extension
with a single value or with a value range.
If cpuv4 is not supported due to
(1) older compiler, e.g., less than clang version 18, or
(2) test runner test_progs and test_progs-no_alu32 which tests
cpu v2 and v3, or
(3) non-x86_64 arch not supporting new insns in jit yet,
a dummy program is added with below output:
#318/1 verifier_ldsx/cpuv4 is not supported by compiler or jit, use a dummy test:OK
#318 verifier_ldsx:OK
to indicate the test passed with a dummy test instead of actually
testing cpuv4. I am using a dummy prog to avoid changing the
verifier testing infrastructure. Once clang 18 is widely available
and other architectures support cpuv4, at least for CI run,
the dummy program can be removed.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230728011304.3719139-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.