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Dan Carpenter 237bfb76c9 selftests/futex: Fix futex_wait() for 32bit ARM
On 32bit ARM systems gcc-12 will use 32bit timestamps while gcc-13 and later
will use 64bit timestamps.  The problem is that SYS_futex will continue
pointing at the 32bit system call.  This makes the futex_wait test fail like
this:

  waiter failed errno 110
  not ok 1 futex_wake private returned: 0 Success
  waiter failed errno 110
  not ok 2 futex_wake shared (page anon) returned: 0 Success
  waiter failed errno 110
  not ok 3 futex_wake shared (file backed) returned: 0 Success

Instead of compiling differently depending on the gcc version, use the
-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 options to ensure that 64bit timestamps
are used.  Then use ifdefs to make SYS_futex point to the 64bit system call.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Link: https://lore.kernel.org/20250827130011.677600-6-bigeasy@linutronix.de
2025-09-01 16:26:55 +02:00
Documentation Driver core fixes for 6.16-rc3 2025-08-23 09:04:32 -04:00
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tools selftests/futex: Fix futex_wait() for 32bit ARM 2025-09-01 16:26:55 +02:00
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MAINTAINERS i2c-for-6.17-rc3 2025-08-24 10:32:04 -04:00
Makefile Linux 6.17-rc3 2025-08-24 12:04:12 -04:00
README

README

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 reStructuredText 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.