Alexandre Ghiti 08a2117e83 riscv: Fix text patching when IPI are used ...

[ Upstream commit c97bf62996 ]

For now, we use stop_machine() to patch the text and when we use IPIs for
remote icache flushes (which is emitted in patch_text_nosync()), the system
hangs.

So instead, make sure every CPU executes the stop_machine() patching
function and emit a local icache flush there.

Co-developed-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20240229121056.203419-3-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Stable-dep-of: 13134cc949 ("riscv: kprobes: Fix incorrect address calculation")
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-01-17 13:36:26 +01:00

..

asm

riscv: Fix text patching when IPI are used

2025-01-17 13:36:26 +01:00

uapi/asm

RISC-V: Update AT_VECTOR_SIZE_ARCH for new AT_MINSIGSTKSZ

2024-04-10 16:35:58 +02:00