* [lttng-dev] RCU - Bugs in atomic operations for RISC-V with GCC
@ 2023-09-28 17:09 Olivier Dion via lttng-dev
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From: Olivier Dion via lttng-dev @ 2023-09-28 17:09 UTC (permalink / raw)
To: lttng-dev
Hi all,
We recently have been informed that the implementation of atomic
operations in GCC for RISC-V have bugs in them [1]. However, the fixing
patches missed the 13.2 release and it does not seem that they have been
back-ported to other versions yet.
For this reasons, we concur that it was best to mark Userspace RCU as
broken for RISC-V when compiling with GCC. However, it is still
possible to compile Userspace RCU for RISC-V with other toolchains such
as Clang.
Cheers,
Olivier
[1] https://review.lttng.org/c/userspace-rcu/+/10942
--
Olivier Dion
EfficiOS Inc.
https://www.efficios.com
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2023-09-28 17:09 [lttng-dev] RCU - Bugs in atomic operations for RISC-V with GCC Olivier Dion via lttng-dev
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