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: 043cb41a85 ("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	2022-05-09 09:04:59 +02:00
lib	riscv: use memcpy based uaccess for nommu again	2020-10-04 10:27:07 -07:00
mm	riscv: Fix config KASAN && DEBUG_VIRTUAL	2022-03-08 19:09:31 +01:00
net	riscv, bpf: Fix potential NULL dereference	2021-11-02 19:48:21 +01:00
Kbuild	riscv: Allow device trees to be built into the kernel	2020-05-18 11:38:05 -07:00
Kconfig	riscv: Fix asan-stack clang build	2021-11-02 19:48:25 +01:00
Kconfig.debug
Kconfig.socs	RISC-V: Remove CLINT related code from timer and arch	2020-08-20 10:58:13 -07:00
Makefile	riscv: fix build with binutils 2.38	2022-02-16 12:54:21 +01:00