riscv: Decouple emulated unaligned accesses from access speed

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Detecting if a system traps into the kernel on an unaligned access
can be performed separately from checking the speed of unaligned
accesses. This decoupling will make it possible to selectively enable
or disable each of these checks.

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Samuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20240308-disable_misaligned_probe_config-v9-3-a388770ba0ce@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Charlie Jenkins 2024-03-08 10:25:57 -08:00 • committed by Palmer Dabbelt

parent 313130c62c

commit 6e5ce7f2ea

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3 changed files with 29 additions and 13 deletions

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2

arch/riscv/include/asm/cpufeature.h

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25

arch/riscv/kernel/cpufeature.c

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15

arch/riscv/kernel/traps_misaligned.c

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