linux

iv/linux

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Guo Ren 8fcce58c59 riscv: patch_text: Fixup last cpu should be master

commit 8ec1442953c66a1d8462cccd8c20b7ba561f5915 upstream.

These patch_text implementations are using stop_machine_cpuslocked
infrastructure with atomic cpu_count. The original idea: When the
master CPU patch_text, the others should wait for it. But current
implementation is using the first CPU as master, which couldn't
guarantee the remaining CPUs are waiting. This patch changes the
last CPU as the master to solve the potential risk.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: 043cb41a85de ("riscv: introduce interfaces to patch kernel code")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-05-09 09:04:59 +02:00

boot

Revert "dts: phy: add GPIO number and active state used for phy reset"

2021-02-17 11:02:20 +01:00

configs

riscv: defconfig: enable gpio support for HiFive Unleashed

2021-01-27 11:55:01 +01:00

include

riscv module: remove (NOLOAD)

2022-04-08 14:40:42 +02:00

kernel

riscv: patch_text: Fixup last cpu should be master