RISC-V: validate riscv,isa at boot, not during ISA string parsing

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Since riscv_fill_hwcap() now only iterates over possible cpus, the
basic validation of whether riscv,isa contains "rv<width>" can be moved
to riscv_early_of_processor_hartid().

Further, "ima" support is required by the kernel, so reject any CPU not
fitting the bill.

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Link: https://lore.kernel.org/r/20230607-guts-blurry-67e711acf328@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Conor Dooley 2023-06-07 21:28:27 +01:00 • committed by Palmer Dabbelt

parent 2ac8743437

commit 069b0d5170

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2 changed files with 11 additions and 9 deletions

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8

arch/riscv/kernel/cpu.c

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12

arch/riscv/kernel/cpufeature.c

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