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linux/arch/riscv/kernel
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Palmer Dabbelt b51fc88cb3
Merge patch series "riscv: Add remaining module relocations and tests" 
Charlie Jenkins <charlie@rivosinc.com> says:

A handful of module relocations were missing, this patch includes the
remaining ones. I also wrote some test cases to ensure that module
loading works properly. Some relocations cannot be supported in the
kernel, these include the ones that rely on thread local storage and
dynamic linking.

This patch also overhauls the implementation of ADD/SUB/SET/ULEB128
relocations to handle overflow. "Overflow" is different for ULEB128
since it is a variable-length encoding that the compiler can be expected
to generate enough space for. Instead of overflowing, ULEB128 will
expand into the next 8-bit segment of the location.

A psABI proposal [1] was merged that mandates that SET_ULEB128 and
SUB_ULEB128 are paired, however the discussion following the merging of
the pull request revealed that while the pull request was valid, it
would be better for linkers to properly handle this overflow. This patch
proactively implements this methodology for future compatibility.

This can be tested by enabling KUNIT, RUNTIME_KERNEL_TESTING_MENU, and
RISCV_MODULE_LINKING_KUNIT.

[1] https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/403

* b4-shazam-merge:
  riscv: Add tests for riscv module loading
  riscv: Add remaining module relocations
  riscv: Avoid unaligned access when relocating modules

Link: https://lore.kernel.org/r/20231101-module_relocations-v9-0-8dfa3483c400@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
 		2023-11-07 14:59:35 -08:00
..
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: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
tests riscv: Add tests for riscv module loading 2023-11-07 14:59:32 -08:00
vdso riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
.gitignore
…
Makefile Merge patch series "riscv: Add remaining module relocations and tests" 2023-11-07 14:59:35 -08:00
acpi.c RISC-V: ACPI: Enhance acpi_os_ioremap with MMIO remapping 2023-10-26 09:40:31 -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: Implement Shadow Call Stack 2023-10-27 14:43:08 -07:00
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.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
copy-unaligned.h RISC-V: Probe for unaligned access speed 2023-09-01 09:06:25 -07:00
cpu-hotplug.c riscv: Switch to hotplug core state synchronization 2023-05-15 13:44:59 +02:00
cpu.c RISC-V Patches for the 6.6 Merge Window, Part 1 2023-09-01 08:09:48 -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 riscv: don't probe unaligned access speed if already done 2023-11-05 09:05:51 -08:00
crash_core.c riscv: Export va_kernel_pa_offset in vmcoreinfo 2023-08-02 13:50:31 -07:00
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 Merge patch series "riscv: kexec: cleanup and fixups" 2023-10-31 19:15:41 -07:00
entry.S riscv: kernel: Use correct SYM_DATA_*() macro for data 2023-11-06 09:42:48 -08:00
fpu.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
ftrace.c RISC-V: Don't check text_mutex during stop_machine 2023-03-09 14:58:51 -08:00
head.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
head.h riscv: entry: Convert to generic entry 2023-03-23 08:47:00 -07:00
hibernate-asm.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
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 riscv: Use separate IRQ shadow call stacks 2023-10-27 14:43:09 -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: kexec: Cleanup riscv_kexec_relocate 2023-09-20 02:53:29 -07:00
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
mcount-dyn.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
mcount.S riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
module-sections.c
…
module.c riscv: Add remaining module relocations 2023-11-07 14:59:31 -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
…
process.c riscv: add support for PR_SET_UNALIGN and PR_GET_UNALIGN 2023-11-01 08:34:59 -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 riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb 2023-11-06 07:20:51 -08:00
setup.c RISC-V: Enable cbo.zero in usermode 2023-09-21 04:22:24 -07:00
signal.c riscv: signal: handle syscall restart before get_signal 2023-11-05 06:43:01 -08:00
smp.c riscv: Fix CPU feature detection with SMP disabled 2023-08-08 15:28:25 -07:00
smpboot.c Merge patch series "Add support to handle misaligned accesses in S-mode" 2023-11-05 06:42:51 -08:00
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 riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
sys_riscv.c RISC-V: hwprobe: Expose Zicboz extension and its block size 2023-09-21 04:22:25 -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.c riscv: add userland instruction dump to RISC-V splats 2023-11-05 14:14:13 -08:00
traps_misaligned.c riscv: add support for PR_SET_UNALIGN and PR_GET_UNALIGN 2023-11-01 08:34:59 -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