Palmer Dabbelt 2305989396 RISC-V: Provide a more helpful error message on invalid ISA strings ... Right now we provide a somewhat unhelpful error message on systems with invalid error messages, something along the lines of CPU with hartid=0 is not available ------------[ cut here ]------------ kernel BUG at arch/riscv/kernel/smpboot.c:174! Kernel BUG [#1] Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 6.4.0-rc1-00096-ge0097d2c62d5-dirty #1 Hardware name: Microchip PolarFire-SoC Icicle Kit (DT) epc : of_parse_and_init_cpus+0x16c/0x16e ra : of_parse_and_init_cpus+0x9a/0x16e epc : ffffffff80c04e0a ra : ffffffff80c04d38 sp : ffffffff81603e20 gp : ffffffff8182d658 tp : ffffffff81613f80 t0 : 000000000000006e t1 : 0000000000000064 t2 : 0000000000000000 s0 : ffffffff81603e80 s1 : 0000000000000000 a0 : 0000000000000000 a1 : 0000000000000000 a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000 a5 : 0000000000001fff a6 : 0000000000001fff a7 : ffffffff816148b0 s2 : 0000000000000001 s3 : ffffffff81492a4c s4 : ffffffff81a4b090 s5 : ffffffff81506030 s6 : 0000000000000040 s7 : 0000000000000000 s8 : 00000000bfb6f046 s9 : 0000000000000001 s10: 0000000000000000 s11: 00000000bf389700 t3 : 0000000000000000 t4 : 0000000000000000 t5 : ffffffff824dd188 t6 : ffffffff824dd187 status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000003 [<ffffffff80c04e0a>] of_parse_and_init_cpus+0x16c/0x16e [<ffffffff80c04c96>] setup_smp+0x1e/0x26 [<ffffffff80c03ffe>] setup_arch+0x6e/0xb2 [<ffffffff80c00384>] start_kernel+0x72/0x400 Code: 80e7 4a00 a603 0009 b795 1097 ffe5 80e7 92c0 9002 (9002) 715d ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Fatal exception in interrupt Add a warning for the cases where the ISA string isn't valid. It's still above the BUG_ON cut, but hopefully it's at least a bit easier for users. Reviewed-by: Evan Green <evan@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20230713-endless-spearhead-62a5a4b149bd@wendy Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2023-07-25 16:26:15 -07:00
..
compat_vdso	RISC-V Patches for the 6.4 Merge Window, Part 1	2023-04-28 16:55:39 -07:00
pi	riscv: Fix orphan section warnings caused by kernel/pi	2023-05-09 18:20:23 -07:00
probes	RISC-V Patches for the 6.5 Merge Window, Part 1	2023-06-30 09:37:26 -07:00
vdso	riscv: replace deprecated scall with ecall	2023-06-20 09:02:09 -07:00
.gitignore
acpi.c	RISC-V: ACPI : Fix for usage of pointers in different address space	2023-06-19 09:27:58 -07:00
alternative.c	RISC-V: hwprobe: Remove __init on probe_vendor_features()	2023-04-25 21:58:42 -07:00
asm-offsets.c	RISC-V: Add arch functions to support hibernation/suspend-to-disk	2023-04-29 11:25:13 -07:00
cacheinfo.c	RISC-V Patches for the 6.4 Merge Window, Part 1	2023-04-28 16:55:39 -07:00
compat_signal.c	riscv: compat: signal: Add rt_frame implementation	2022-05-17 16:37:21 -07:00
compat_syscall_table.c	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
cpu-hotplug.c	riscv: Switch to hotplug core state synchronization	2023-05-15 13:44:59 +02:00
cpu.c	RISC-V: Provide a more helpful error message on invalid ISA strings	2023-07-25 16:26:15 -07:00
cpu_ops.c	RISC-V: Align SBI probe implementation with spec	2023-04-29 13:04:50 -07:00
cpu_ops_sbi.c	riscv: cpu_ops_sbi: Add 64bit hartid support on RV64	2022-07-19 16:38:58 -07:00
cpu_ops_spinwait.c	RISC-V: cpu_ops_spinwait.c should include head.h	2022-08-11 13:24:16 -07:00
cpufeature.c	Merge patch series "ISA string parser cleanups"	2023-06-23 10:06:20 -07:00
crash_core.c	RISC-V: Add arch_crash_save_vmcoreinfo support	2022-12-02 16:48:22 -08:00
crash_dump.c	vmcore: convert copy_oldmem_page() to take an iov_iter	2022-04-29 14:37:59 -07:00
crash_save_regs.S	RISC-V: Fixup get incorrect user mode PC for kernel mode regs	2022-08-11 08:54:40 -07:00
efi-header.S	riscv: Prepare EFI header for relocatable kernels	2023-04-19 07:46:28 -07:00
efi.c	efi: Discover BTI support in runtime services regions	2023-02-04 09:19:02 +01:00
elf_kexec.c	RISC-V: kexec: Fix memory leak of elf header buffer	2022-12-05 10:59:58 -08:00
entry.S	riscv: replace deprecated scall with ecall	2023-06-20 09:02:09 -07:00
fpu.S
ftrace.c	RISC-V: Don't check text_mutex during stop_machine	2023-03-09 14:58:51 -08:00
head.h	riscv: entry: Convert to generic entry	2023-03-23 08:47:00 -07:00
head.S	riscv: prevent stack corruption by reserving task_pt_regs(p) early	2023-06-08 07:16:49 -07:00
hibernate-asm.S	riscv: hibernation: Remove duplicate call of suspend_restore_csrs	2023-06-19 09:27:57 -07:00
hibernate.c	riscv: hibernate: remove WARN_ON in save_processor_state	2023-06-23 10:06:22 -07:00
image-vars.h	riscv: Fix EFI stub usage of KASAN instrumented strcmp function	2023-04-19 07:24:52 -07:00
irq.c	riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK	2023-06-22 10:38:36 -07:00
jump_label.c	jump_label: make initial NOP patching the special case	2022-06-24 09:48:55 +02:00
kexec_relocate.S
kgdb.c	RISC-V: rename parse_asm.h to insn.h	2022-12-29 06:59:47 -08:00
machine_kexec.c	riscv: kexec: Fixup crash_smp_send_stop without multi cores	2022-11-29 21:50:59 -08:00
machine_kexec_file.c	RISC-V: Add kexec_file support	2022-05-19 12:14:18 -07:00
Makefile	RISC-V Patches for the 6.5 Merge Window, Part 1	2023-06-30 09:37:26 -07:00
mcount-dyn.S	riscv: entry: Consolidate general regs saving/restoring	2023-03-23 08:47:03 -07:00
mcount.S	riscv: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL	2023-06-22 10:39:56 -04:00
module-sections.c
module.c	riscv: module: Add ADD16 and SUB16 rela types	2023-01-31 23:29:40 -08:00
patch.c	RISC-V: Don't check text_mutex during stop_machine	2023-03-09 14:58:51 -08:00
perf_callchain.c
perf_regs.c
process.c	riscv: Add prctl controls for userspace vector management	2023-06-08 07:16:53 -07:00
ptrace.c	riscv: Add ptrace vector support	2023-06-08 07:16:45 -07:00
reset.c	riscv: Use do_kernel_power_off()	2022-05-19 19:30:30 +02:00
riscv_ksyms.c	RISC-V: add infrastructure to allow different str* implementations	2023-01-31 11:43:23 -08:00
sbi-ipi.c	RISC-V: Allow marking IPIs as suitable for remote FENCEs	2023-04-08 11:26:24 +01:00
sbi.c	RISC-V: Align SBI probe implementation with spec	2023-04-29 13:04:50 -07:00
setup.c	Merge patch series "riscv: Add vector ISA support"	2023-06-08 07:17:09 -07:00
signal.c	riscv: signal: validate altstack to reflect Vector	2023-06-08 07:16:48 -07:00
smp.c	RISC-V: drop error print from riscv_hartid_to_cpuid()	2023-07-04 09:04:12 -07:00
smpboot.c	risc-v: Fix order of IPI enablement vs RCU startup	2023-07-05 07:24:38 -07:00
soc.c
stacktrace.c	riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode	2023-03-09 14:50:35 -08:00
suspend.c	RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function	2023-04-29 11:25:10 -07:00
suspend_entry.S	RISC-V: Factor out common code of __cpu_resume_enter()	2023-04-29 11:25:11 -07:00
sys_riscv.c	Merge patch series "RISC-V: Export Zba, Zbb to usermode via hwprobe"	2023-06-19 14:34:40 -07:00
syscall_table.c
time.c	RISC-V: time.c: Add ACPI support for time_init()	2023-06-01 08:45:13 -07:00
traps.c	riscv: Discard vector state on syscalls	2023-07-04 08:59:24 -07:00
traps_misaligned.c	riscv: traps_misaligned: do not duplicate stringify	2022-08-11 08:56:53 -07:00
vdso.c	riscv: vdso: include vdso/vsyscall.h for vdso_data	2023-07-04 07:54:41 -07:00
vector.c	riscv: vector: clear V-reg in the first-use trap	2023-07-01 07:38:21 -07:00
vmlinux-xip.lds.S	riscv: vmlinux-xip.lds.S: remove .alternative section	2023-06-25 16:24:03 -07:00
vmlinux.lds.S	riscv: enable HAVE_LD_DEAD_CODE_DATA_ELIMINATION	2023-06-25 16:24:05 -07:00