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linux/arch/riscv/kernel
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Jisheng Zhang b649a7fe9a riscv: don't probe unaligned access speed if already done 
[ Upstream commit c20d36cc2a2073d4cdcda92bd7a1bb9b3b3b7c79 ]

If misaligned_access_speed percpu var isn't so called "HWPROBE
MISALIGNED UNKNOWN", it means the probe has happened(this is possible
for example, hotplug off then hotplug on one cpu), and the percpu var
has been set, don't probe again in this case.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Fixes: 584ea6564bca ("RISC-V: Probe for unaligned access speed")
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230912154040.3306-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-10 17:16:56 +01:00
..
compat_vdso
riscv: Handle zicsr/zifencei issue between gcc and binutils
2023-08-16 07:39:38 -07:00
pi
riscv: Introduce virtual kernel mapping KASLR
2023-09-05 19:49:27 -07:00
probes
riscv: kprobes: allow writing to x0
2023-11-28 17:20:13 +00:00
vdso
RISC-V: hwprobe: Fix vDSO SIGSEGV
2023-11-28 17:19:49 +00:00
.gitignore
…
acpi.c
RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address
2023-08-02 13:49:43 -07:00
alternative.c
Merge patch series "Add non-coherent DMA support for AX45MP"
2023-09-08 11:24:34 -07:00
asm-offsets.c
riscv: VMAP_STACK overflow detection thread-safe
2023-11-28 17:19:47 +00:00
cacheinfo.c
RISC-V Patches for the 6.4 Merge Window, Part 1
2023-04-28 16:55:39 -07:00
cfi.c
riscv: Add CFI error handling
2023-08-23 14:16:39 -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: Implement syscall wrappers
2023-08-23 14:16:36 -07:00
copy-unaligned.h
RISC-V: Probe for unaligned access speed
2023-09-01 09:06:25 -07:00
copy-unaligned.S
RISC-V: Probe for unaligned access speed
2023-09-01 09:06:25 -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
cpu_ops.c
RISC-V: Align SBI probe implementation with spec
2023-04-29 13:04:50 -07:00
cpu-hotplug.c
riscv: Switch to hotplug core state synchronization
2023-05-15 13:44:59 +02:00
cpu.c
RISC-V: Don't fail in riscv_of_parent_hartid() for disabled HARTs
2023-11-20 11:59:37 +01:00
cpufeature.c
riscv: don't probe unaligned access speed if already done
2024-01-10 17:16:56 +01:00
crash_core.c
kexec: drop dependency on ARCH_SUPPORTS_KEXEC from CRASH_DUMP
2023-12-20 17:02:03 +01:00
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
riscv: kexec: Align the kexeced kernel entry
2023-09-12 13:58:39 -07:00
entry.S
riscv: put interrupt entries into .irqentry.text
2023-11-28 17:20:13 +00:00
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: remove redundant mv instructions
2023-08-31 00:18:25 -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: libstub: Implement KASLR by using generic functions
2023-09-05 19:49:31 -07:00
irq.c
RISC-V: Fix wrong use of CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK
2023-10-12 11:34:16 -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
riscv: Don't use va_pa_offset on kdump
2022-01-09 10:38:06 -08:00
kgdb.c
RISC-V: rename parse_asm.h to insn.h
2022-12-29 06:59:47 -08:00
machine_kexec_file.c
RISC-V: Add kexec_file support
2022-05-19 12:14:18 -07:00
machine_kexec.c
riscv: kexec: Fixup crash_smp_send_stop without multi cores
2022-11-29 21:50:59 -08:00
Makefile
Merge patch series "RISC-V: Probe for misaligned access speed"
2023-09-08 11:24:12 -07:00
mcount-dyn.S
riscv: entry: Consolidate general regs saving/restoring
2023-03-23 08:47:03 -07:00
mcount.S
riscv: Add ftrace_stub_graph
2023-08-23 14:16:38 -07:00
module-sections.c
…
module.c
riscv: module: Add ADD16 and SUB16 rela types
2023-01-31 23:29:40 -08:00
patch.c
riscv: implement a memset like function for text
2023-09-06 06:26:06 -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
riscv: Add prctl controls for userspace vector management
2023-06-08 07:16:53 -07:00
ptrace.c
RISC-V: Add ptrace support for vectors
2023-09-01 13:05:38 -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
riscv: kdump: fix crashkernel reserving problem on RISC-V
2023-10-12 11:34:09 -07:00
signal.c
riscv: signal: fix sigaltstack frame size checking
2023-10-12 05:38:40 -07:00
smp.c
riscv: Fix CPU feature detection with SMP disabled
2023-08-08 15:28:25 -07:00
smpboot.c
RISC-V: alternative: Remove feature_probe_func
2023-09-01 09:06:26 -07:00
soc.c
riscv: Fix builtin DTB handling
2021-01-07 19:00:50 -08:00
stacktrace.c
riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode
2023-03-09 14:50:35 -08:00
suspend_entry.S
riscv: Add types to indirectly called assembly functions
2023-08-23 14:16:37 -07:00
suspend.c
RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function
2023-04-29 11:25:10 -07:00
sys_riscv.c
riscv: Implement syscall wrappers
2023-08-23 14:16:36 -07:00
syscall_table.c
riscv: Implement syscall wrappers
2023-08-23 14:16:36 -07:00
time.c
RISC-V: time.c: Add ACPI support for time_init()
2023-06-01 08:45:13 -07:00
traps_misaligned.c
riscv: fix misaligned access handling of C.SWSP and C.SDSP
2023-12-13 18:45:19 +01:00
traps.c
riscv: VMAP_STACK overflow detection thread-safe
2023-11-28 17:19:47 +00:00
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