[PATCH v3 0/2] riscv: fix patching with IPI

From: Alexandre Ghiti
Date: Thu Feb 29 2024 - 07:11:17 EST


patch 1 removes a useless memory barrier and patch 2 actually fixes the
issue with IPI in the patching code.

Changes in v3:
- Remove wrong cleanup as noted by Samuel
- Enhance comment about usage of release semantics as suggested by
Andrea
- Add RBs from Andrea

Changes in v2:
- Add patch 1 and then remove the memory barrier from patch 2 as
suggested by Andrea
- Convert atomic_inc into an atomic_inc with release semantics as
suggested by Andrea

Alexandre Ghiti (2):
riscv: Remove superfluous smp_mb()
riscv: Fix text patching when IPI are used

arch/riscv/include/asm/patch.h | 1 +
arch/riscv/kernel/ftrace.c | 44 ++++++++++++++++++++++++++++++----
arch/riscv/kernel/patch.c | 17 +++++++++----
3 files changed, 53 insertions(+), 9 deletions(-)

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2.39.2