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linux/arch/riscv/kernel
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Evan Green 82e9c66e81
RISC-V: Track ISA extensions per hart 
The kernel maintains a mask of ISA extensions ANDed together across all
harts. Let's also keep a bitmap of ISA extensions for each CPU. Although
the kernel is currently unlikely to enable a feature that exists only on
some CPUs, we want the ability to report asymmetric CPU extensions
accurately to usermode.

Note that riscv_fill_hwcaps() runs before the per_cpu_offsets are built,
which is why I've used a [NR_CPUS] array rather than per_cpu() data.

Signed-off-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230509182504.2997252-3-evan@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-06-19 09:51:22 -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: Allow to downgrade paging mode from the command line
2023-04-26 07:30:52 -07:00
probes
RISC-V Patches for the 6.3 Merge Window, Part 1
2023-02-25 11:14:08 -08:00
vdso
RISC-V Patches for the 6.4 Merge Window, Part 1
2023-04-28 16:55:39 -07:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
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_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
Objtool changes for v6.4:
2023-04-28 14:02:54 -07:00
cpu.c
RISC-V: Add Zba, Zbs extension probing
2023-06-19 09:51:16 -07:00
cpufeature.c
RISC-V: Track ISA extensions per hart
2023-06-19 09:51:22 -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: entry: Consolidate general regs saving/restoring
2023-03-23 08:47:03 -07:00
fpu.S
riscv: abstract out CSR names for supervisor vs machine mode
2019-11-05 09:20:42 -08:00
ftrace.c
RISC-V: 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: fix -Wundef warning for CONFIG_RISCV_BOOT_SPINWAIT
2023-01-19 16:37:11 -08:00
hibernate-asm.S
RISC-V: Add arch functions to support hibernation/suspend-to-disk
2023-04-29 11:25:13 -07:00
hibernate.c
RISC-V: Add arch functions to support hibernation/suspend-to-disk
2023-04-29 11:25:13 -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
RISC-V: Treat IPIs as normal Linux IRQs
2023-04-08 11:26:24 +01:00
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
riscv: compat_syscall_table: Fixup compile warning
2023-05-01 15:42:34 -07:00
mcount-dyn.S
riscv: entry: Consolidate general regs saving/restoring
2023-03-23 08:47:03 -07:00
mcount.S
RISC-V: preserve a1 in mcount
2022-12-02 10:04:37 -08:00
module-sections.c
riscv: add missing header file includes
2019-10-28 00:46:01 -07:00
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
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: entry: Consolidate ret_from_kernel_thread into ret_from_fork
2023-03-23 08:47:02 -07:00
ptrace.c
riscv: entry: Convert to generic entry
2023-03-23 08:47:00 -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
RISC-V Patches for the 6.4 Merge Window, Part 1
2023-04-28 16:55:39 -07:00
signal.c
RISC-V Patches for the 6.4 Merge Window, Part 1
2023-04-28 16:55:39 -07:00
smp.c
SMP cross-CPU function-call updates for v6.4:
2023-04-28 15:03:43 -07:00
smpboot.c
RISC-V Patches for the 6.4 Merge Window, Part 1
2023-04-28 16:55:39 -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
RISC-V: Factor out common code of __cpu_resume_enter()
2023-04-29 11:25:11 -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
RISC-V: hwprobe: Explicity check for -1 in vdso init
2023-04-26 08:58:34 -07:00
syscall_table.c
riscv/vdso: Refactor asm/vdso.h
2021-10-02 13:42:23 -07:00
time.c
clocksource/drivers/riscv: Get rid of clocksource_arch_init() callback
2023-02-13 13:10:17 +01:00
traps_misaligned.c
riscv: traps_misaligned: do not duplicate stringify
2022-08-11 08:56:53 -07:00
traps.c
riscv: entry: Save a0 prior syscall_enter_from_user_mode()
2023-04-11 08:25:29 -07:00
vdso.c
RISC-V: Add hwprobe vDSO function and data
2023-04-18 15:48:18 -07:00
vmlinux-xip.lds.S
objtool/idle: Validate __cpuidle code as noinstr
2023-01-13 11:48:15 +01:00
vmlinux.lds.S
riscv: Move .rela.dyn to the init sections
2023-05-01 17:00:32 -07:00