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| author | Jonas Oberhauser <jonas.oberhauser@huaweicloud.com> | 2024-09-30 12:57:09 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2025-02-25 10:16:57 -0800 |
| commit | fafa180683591f5f917bfa68e95aae463afc852a (patch) | |
| tree | e8401ed5a3804c81b07416bd0241acba8a0dc2dd /tools/memory-model/README | |
| parent | tools/memory-model: Define effect of Mb tags on RMWs in tools/... (diff) | |
| download | linux-fafa180683591f5f917bfa68e95aae463afc852a.tar.gz linux-fafa180683591f5f917bfa68e95aae463afc852a.zip | |
tools/memory-model: Switch to softcoded herd7 tags
A new version of herd7 provides a -lkmmv2 switch which overrides the old herd7
behavior of simply ignoring any softcoded tags in the .def and .bell files. We
port LKMM to this version of herd7 by providing the switch in linux-kernel.cfg
and reporting an error if the LKMM is used without this switch.
To preserve the semantics of LKMM, we also softcode the Noreturn tag on atomic
RMW which do not return a value and define atomic_add_unless with an Mb tag in
linux-kernel.def.
We update the herd-representation.txt accordingly and clarify some of the
resulting combinations.
Co-developed-by: Hernan Ponce de Leon <hernan.poncedeleon@huaweicloud.com>
Signed-off-by: Hernan Ponce de Leon <hernan.poncedeleon@huaweicloud.com>
Signed-off-by: Jonas Oberhauser <jonas.oberhauser@huaweicloud.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Tested-by: Boqun Feng <boqun.feng@gmail.com>
Tested-by: Akira Yokosawa <akiyks@gmail.com> # herdtools7.7.58
Diffstat (limited to 'tools/memory-model/README')
| -rw-r--r-- | tools/memory-model/README | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/memory-model/README b/tools/memory-model/README index dab38904206a..59bc15edeb8a 100644 --- a/tools/memory-model/README +++ b/tools/memory-model/README @@ -20,7 +20,7 @@ that litmus test to be exercised within the Linux kernel. REQUIREMENTS ============ -Version 7.52 or higher of the "herd7" and "klitmus7" tools must be +Version 7.58 or higher of the "herd7" and "klitmus7" tools must be downloaded separately: https://github.com/herd/herdtools7 |