Files
cubelinux-kernel/tools/memory-model/litmus-tests/LB+poonceonces.litmus
T
Greg Kroah-Hartman 598cf27219 Linux 6.19.3
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com>
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Brett A C Sheffield <bacs@librecast.net>
Tested-by: Mark Brown <broonie@kernel.org>
Tested-by: Luna Jernberg <droidbittin@gmail.com>
Tested-by: Ronald Warsow <rwarsow@gmx.de>
Tested-by: Justin M. Forbes <jforbes@fedoraproject.org>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-19 16:33:27 +01:00

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C LB+poonceonces
(*
* Result: Sometimes
*
* Can the counter-intuitive outcome for the load-buffering pattern
* be prevented even with no explicit ordering?
*)
{}
P0(int *x, int *y)
{
int r0;
r0 = READ_ONCE(*x);
WRITE_ONCE(*y, 1);
}
P1(int *x, int *y)
{
int r0;
r0 = READ_ONCE(*y);
WRITE_ONCE(*x, 1);
}
exists (0:r0=1 /\ 1:r0=1)