linux/arch/riscv
Clément Léger 7c83232161
riscv: add support for misaligned trap handling in S-mode
Misalignment trap handling is only supported for M-mode and uses direct
accesses to user memory. In S-mode, when handling usermode fault, this
requires to use the get_user()/put_user() accessors. Implement
load_u8(), store_u8() and get_insn() using these accessors for
userspace and direct text access for kernel.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/r/20231004151405.521596-3-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-01 08:34:53 -07:00
..
boot RISC-V Devicetrees for v6.6 Part 2 2023-08-21 21:47:55 -04:00
configs Kbuild updates for v6.6 2023-09-05 11:01:47 -07:00
errata Merge patch series "Add non-coherent DMA support for AX45MP" 2023-09-08 11:24:34 -07:00
include riscv: add support for misaligned trap handling in S-mode 2023-11-01 08:34:53 -07:00
kernel riscv: add support for misaligned trap handling in S-mode 2023-11-01 08:34:53 -07:00
kvm KVM/riscv changes for 6.6 2023-08-31 13:25:55 -04:00
lib riscv: uaccess: Return the number of bytes effectively not copied 2023-08-16 07:30:06 -07:00
mm Merge patch series "riscv: Introduce KASLR" 2023-09-08 11:25:13 -07:00
net bpf, riscv: use prog pack allocator in the BPF JIT 2023-09-06 06:26:07 -07:00
purgatory riscv/purgatory: Disable CFI 2023-08-23 14:16:40 -07:00
tools riscv: Check relocations at compile time 2023-04-19 07:46:32 -07:00
Kbuild kexec: rename ARCH_HAS_KEXEC_PURGATORY 2023-08-18 10:18:54 -07:00
Kconfig riscv: add support for misaligned trap handling in S-mode 2023-11-01 08:34:53 -07:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.errata riscv: Kconfig.errata: Add dependency for RISCV_SBI in ERRATA_ANDES config 2023-09-08 11:25:28 -07:00
Kconfig.socs RISC-V: make ARCH_THEAD preclude XIP_KERNEL 2023-07-05 22:21:23 +02:00
Makefile riscv: Require FRAME_POINTER for some configurations 2023-08-23 09:07:26 -07:00
Makefile.postlink riscv: Use --emit-relocs in order to move .rela.dyn in init 2023-04-19 07:46:33 -07:00