RISC-V: provide Kconfig & commandline options to control parsing "riscv,isa"

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As it says on the tin, provide Kconfig option to control parsing the
"riscv,isa" devicetree property. If either option is used, the kernel
will fall back to parsing "riscv,isa", where "riscv,isa-base" and
"riscv,isa-extensions" are not present.
The Kconfig options are set up so that the default kernel configuration
will enable the fallback path, without needing the commandline option.

Suggested-by: Andrew Jones <ajones@ventanamicro.com>
Suggested-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230713-aviator-plausibly-a35662485c2c@wendy
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Conor Dooley 2023-07-13 13:11:09 +01:00 • committed by Palmer Dabbelt

parent c98f136aed

commit 496ea826d1

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7

Documentation/admin-guide/kernel-parameters.txt

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18

arch/riscv/Kconfig

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1

arch/riscv/include/asm/hwcap.h

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8

arch/riscv/kernel/cpu.c

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14

arch/riscv/kernel/cpufeature.c

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