Guo Ren 8ec1442953 riscv: patch_text: Fixup last cpu should be master ... 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>		2022-04-22 08:29:24 -07:00
..
probes	ftrace: disable preemption when recursion locked	2021-10-27 11:21:49 -04:00
vdso	riscv/vdso: Add support for time namespaces	2021-10-04 14:16:43 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
Makefile	RISC-V CPU Idle Support	2022-03-30 16:17:54 -07:00
asm-offsets.c	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
cacheinfo.c	drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()	2021-09-01 10:29:10 +02:00
cpu-hotplug.c	riscv: cpu-hotplug: clear cpu from numa map when teardown	2022-02-10 09:16:50 -08:00
cpu.c	riscv: cpu.c: don't use kernel-doc markers for comments	2022-03-31 15:42:46 -07:00
cpu_ops.c	RISC-V: Move spinwait booting method to its own config	2022-01-20 09:27:16 -08:00
cpu_ops_sbi.c	RISC-V: Declare per cpu boot data as static	2022-03-31 12:44:32 -07:00
cpu_ops_spinwait.c	RISC-V: Use __cpu_up_stack/task_pointer only for spinwait method	2022-01-20 09:27:08 -08:00
cpufeature.c	RISC-V: Add sscofpmf extension support	2022-03-21 15:01:09 -07:00
crash_dump.c	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
crash_save_regs.S	RISC-V: Add kdump support	2021-04-26 08:25:23 -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	RISC-V Patches for the 5.18 Merge Window, Part 1	2022-03-25 10:11:38 -07:00
fpu.S	riscv: abstract out CSR names for supervisor vs machine mode	2019-11-05 09:20:42 -08:00
ftrace.c	ftrace: Cleanup ftrace_dyn_arch_init()	2021-10-08 19:41:39 -04:00
head.S	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
head.h	RISC-V: Move spinwait booting method to its own config	2022-01-20 09:27:16 -08:00
image-vars.h	arch/riscv:fix typo in a comment in arch/riscv/kernel/image-vars.h	2021-02-18 23:18:00 -08:00
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
kexec_relocate.S	riscv: Don't use va_pa_offset on kdump	2022-01-09 10:38:06 -08:00
kgdb.c	riscv: Fix "no previous prototype" compile warning in kgdb.c file	2020-07-09 20:09:30 -07:00
machine_kexec.c	riscv: use hart id instead of cpu id on machine_kexec	2022-01-09 10:40:00 -08:00
mcount-dyn.S	riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT	2021-01-14 15:09:05 -08:00
mcount.S	riscv: Workaround mcount name prior to clang-13	2021-04-26 08:25:01 -07:00
module-sections.c	riscv: add missing header file includes	2019-10-28 00:46:01 -07:00
module.c	RISC-V: module: fix apply_r_riscv_rcv_branch_rela typo	2022-03-31 13:20:11 -07:00
patch.c	riscv: patch_text: Fixup last cpu should be master	2022-04-22 08:29:24 -07:00
perf_callchain.c	riscv: Fix fill_callchain return value	2022-03-30 23:01:42 -07:00
perf_regs.c	perf/arch: Remove perf_sample_data::regs_user_copy	2020-11-09 18:12:34 +01:00
process.c	RISC-V: Enable CPU_IDLE drivers	2022-03-10 09:29:21 -08:00
ptrace.c	ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h	2022-03-10 13:35:08 -06:00
reset.c	riscv: set default pm_power_off to NULL	2021-10-04 14:16:57 -07:00
riscv_ksyms.c	riscv: provide memmove implementation	2020-12-10 17:27:54 -08:00
sbi.c	RISC-V: Fix IPI/RFENCE hmask on non-monotonic hartid ordering	2022-02-14 12:27:45 -08:00
setup.c	drivers/base/node: consolidate node device subsystem initialization in node_dev_init()	2022-03-22 15:57:10 -07:00
signal.c	ptrace: Cleanups for v5.18	2022-03-28 17:29:53 -07:00
smp.c	RISC-V: Use common riscv_cpuid_to_hartid_mask() for both SMP=y and SMP=n	2022-01-09 12:13:31 -08:00
smpboot.c	RISC-V: Do not use cpumask data structure for hartid bitmap	2022-01-20 09:27:22 -08:00
soc.c	riscv: Fix builtin DTB handling	2021-01-07 19:00:50 -08:00
stacktrace.c	riscv: Rename "sp_in_global" to "current_stack_pointer"	2022-03-30 15:15:27 -07:00
suspend.c	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
suspend_entry.S	RISC-V: Add arch functions for non-retentive suspend entry/exit	2022-03-10 09:29:31 -08:00
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	riscv/vdso: Refactor asm/vdso.h	2021-10-02 13:42:23 -07:00
time.c	RISC-V Patches for the 5.13 Merge Window, Part 1	2021-05-06 09:24:18 -07:00
trace_irq.c	riscv: fix oops caused by irqsoff latency tracer	2022-02-24 20:30:30 -08:00
trace_irq.h	riscv: fix oops caused by irqsoff latency tracer	2022-02-24 20:30:30 -08:00
traps.c	exit: Add and use make_task_dead.	2021-12-13 12:04:45 -06:00
traps_misaligned.c	riscv: Unaligned load/store handling for M_MODE	2020-04-03 10:45:33 -07:00
vdso.c	riscv/vdso: Add support for time namespaces	2021-10-04 14:16:43 -07:00
vmlinux-xip.lds.S	riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove `.fixup` section	2022-01-05 17:53:37 -08:00
vmlinux.lds.S	riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove `.fixup` section	2022-01-05 17:53:37 -08:00