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linux/arch/riscv/kernel
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Geert Uytterhoeven 5feef64f4c
RISC-V: Fix IPI/RFENCE hmask on non-monotonic hartid ordering 
If the boot CPU does not have the lowest hartid, "hartid - hbase" can
become negative, leading to an incorrect hmask, causing userspace to
crash with SEGV.  This is observed on e.g. Starlight Beta, where cpuid 1
maps to hartid 0, and cpuid 0 maps to hartid 1.

Fix this by detecting this case, and shifting the accumulated mask and
updating hbase, if possible.

Fixes: 26fb751ca37846c9 ("RISC-V: Do not use cpumask data structure for hartid bitmap")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Tested-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-02-14 12:27:45 -08:00
..
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
asm-offsets.c
RISC-V: Avoid using per cpu array for ordered booting
2022-01-20 09:26:59 -08:00
cacheinfo.c
drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()
2021-09-01 10:29:10 +02:00
cpu_ops_sbi.c
RISC-V: Avoid using per cpu array for ordered booting
2022-01-20 09:26:59 -08:00
cpu_ops_spinwait.c
RISC-V: Use __cpu_up_stack/task_pointer only for spinwait method
2022-01-20 09:27:08 -08:00
cpu_ops.c
RISC-V: Move spinwait booting method to its own config
2022-01-20 09:27:16 -08:00
cpu-hotplug.c
riscv: cpu-hotplug: clear cpu from numa map when teardown
2022-02-10 09:16:50 -08:00
cpu.c
riscv: Use pgtable_l4_enabled to output mmu_type in cpuinfo
2022-01-19 17:54:10 -08:00
cpufeature.c
riscv: Add __init section marker to some functions again
2021-05-29 13:39:27 -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
cpu-to-thread_info update for v5.16-rc1
2021-11-01 17:00:05 -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.h
RISC-V: Move spinwait booting method to its own config
2022-01-20 09:27:16 -08:00
head.S
riscv: Fix XIP_FIXUP_FLASH_OFFSET
2022-02-04 11:11:07 -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
Makefile
RISC-V: Move spinwait booting method to its own config
2022-01-20 09:27:16 -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
riscv: module: Create module allocations without exec permissions
2021-04-26 08:25:15 -07:00
patch.c
riscv: Fixup compile error BUILD_BUG_ON failed
2021-01-14 15:09:01 -08:00
perf_callchain.c
perf: Drop dead and useless guest "support" from arm, csky, nds32 and riscv
2021-11-17 14:49:07 +01:00
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
riscv: Turn has_fpu into a static key if FPU=y
2021-05-25 22:56:57 -07:00
ptrace.c
RISC-V: Remove redundant err variable
2022-01-20 10:24:12 -08:00
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
RISC-V: Do not use cpumask data structure for hartid bitmap
2022-01-20 09:27:22 -08:00
signal.c
riscv: Turn has_fpu into a static key if FPU=y
2021-05-25 22:56:57 -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: eliminate unreliable __builtin_frame_address(1)
2022-02-04 10:12:32 -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
traps_misaligned.c
riscv: Unaligned load/store handling for M_MODE
2020-04-03 10:45:33 -07:00
traps.c
exit: Add and use make_task_dead.
2021-12-13 12:04:45 -06:00
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