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
..
vdso	riscv: vdso: fix and clean-up Makefile	2021-06-10 13:39:22 +02:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
asm-offsets.c	riscv: Cleanup unnecessary define in asm-offset.c	2020-07-30 11:37:44 -07:00
cacheinfo.c	drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()	2021-09-26 14:08:59 +02:00
cpu_ops_sbi.c	RISC-V: Support cpu hotplug	2020-03-31 11:28:30 -07:00
cpu_ops_spinwait.c	RISC-V: Add cpu_ops and modify default booting method	2020-03-31 11:25:56 -07:00
cpu_ops.c	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
cpu-hotplug.c	RISC-V: Support cpu hotplug	2020-03-31 11:28:30 -07:00
cpu.c	RISC-V: Rename and move plic_find_hart_id() to arch directory	2020-06-09 19:11:20 -07:00
cpufeature.c	RISC-V: Add bitmap reprensenting ISA features common across CPUs	2020-05-04 14:08:59 -07:00
efi-header.S	RISC-V: Add PE/COFF header for EFI stub	2020-10-02 14:31:16 -07:00
efi.c	RISC-V: Add EFI runtime services	2020-10-02 14:31:28 -07:00
entry.S	riscv: fix oops caused by irqsoff latency tracer	2022-03-02 11:42:56 +01:00
fpu.S	riscv: abstract out CSR names for supervisor vs machine mode	2019-11-05 09:20:42 -08:00
ftrace.c	risc-v: kernel: ftrace: Fixes improper SPDX comment style	2020-11-04 13:28:20 -08:00
head.h	RISC-V: Move DT mapping outof fixmap	2020-10-02 14:30:57 -07:00
head.S	riscv: fix misalgned trap vector base address	2021-11-02 19:48:25 +01:00
image-vars.h	RISC-V: Add PE/COFF header for EFI stub	2020-10-02 14:31:16 -07:00
irq.c	RISC-V: Remove do_IRQ() function	2020-06-09 19:11:24 -07:00
jump_label.c	riscv: Add jump-label implementation	2020-07-30 11:37:43 -07:00
kgdb.c	riscv: Fix "no previous prototype" compile warning in kgdb.c file	2020-07-09 20:09:30 -07:00
Makefile	riscv: fix oops caused by irqsoff latency tracer	2022-03-02 11:42:56 +01:00
mcount-dyn.S
mcount.S	riscv: Workaround mcount name prior to clang-13	2021-05-22 11:40:53 +02:00
module-sections.c
module.c	riscv: Fix auipc+jalr relocation range checks	2022-03-16 14:16:01 +01:00
patch.c	riscv: patch_text: Fixup last cpu should be master	2022-05-09 09:04:59 +02:00
perf_callchain.c	uaccess: fix type mismatch warnings from access_ok()	2022-04-08 14:40:35 +02:00
perf_event.c	riscv: perf_event: Make some funciton static	2020-05-11 13:48:19 -07:00
perf_regs.c	perf/arch: Remove perf_sample_data::regs_user_copy	2020-11-09 18:12:34 +01:00
process.c	sched/idle: Fix arch_cpu_idle() vs tracing	2020-11-24 16:47:35 +01:00
ptrace.c	riscv: Ensure the value of FP registers in the core dump file is up to date	2021-09-03 10:09:22 +02:00
reset.c	riscv: cleanup the default power off implementation	2019-11-13 13:22:52 -08:00
riscv_ksyms.c	riscv: Add KASAN support	2020-01-22 13:09:58 -08:00
sbi.c	RISC-V: Add mechanism to provide custom IPI operations	2020-08-20 10:55:40 -07:00
setup.c	RISC-V: Add missing jump label initialization	2020-11-25 09:44:25 -08:00
signal.c	tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume()	2020-10-17 15:04:36 -06:00
smp.c	RISC-V: Fix error code returned by riscv_hartid_to_cpuid()	2021-05-19 10:13:06 +02:00
smpboot.c	sched/core: Initialize the idle task with preemption disabled	2021-07-14 16:55:50 +02:00
soc.c	mm: introduce include/linux/pgtable.h	2020-06-09 09:39:13 -07:00
stacktrace.c	kernel: rename show_stack_loglvl() => show_stack()	2020-06-09 09:39:13 -07:00
sys_riscv.c	RISC-V: Don't allow write+exec only page mapping request in mmap	2020-06-18 17:28:53 -07:00
syscall_table.c
time.c	riscv: Fix kernel time_init()	2021-01-27 11:54:59 +01:00
trace_irq.c	riscv: fix oops caused by irqsoff latency tracer	2022-03-02 11:42:56 +01:00
trace_irq.h	riscv: fix oops caused by irqsoff latency tracer	2022-03-02 11:42:56 +01:00
traps_misaligned.c	riscv: Unaligned load/store handling for M_MODE	2020-04-03 10:45:33 -07:00
traps.c	RISC-V: Setup exception vector early	2020-07-30 11:37:48 -07:00
vdso.c	riscv/vdso: make arch_setup_additional_pages wait for mmap_sem for write killable	2021-10-13 10:04:29 +02:00
vmlinux.lds.S	RISC-V Patches for the 5.10 Merge Window, Part 1	2020-10-19 18:18:30 -07:00