RISC-V: always report presence of extensions formerly part of the base ISA

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Of these four extensions, two were part of the base ISA when the port was
written and are required by the kernel. The other two are implied when
`i` is in riscv,isa on DT systems.
There's not much that userspace can do with this extra information, but
there is no harm in reporting an ISA string that closer resembles the
current versions of the specifications either.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230607-nest-collision-5796b6be8be6@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Conor Dooley 2023-06-07 21:28:31 +01:00 • committed by Palmer Dabbelt

parent 1e5cae98e4

commit 07edc32779

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4

arch/riscv/include/asm/hwcap.h

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4

arch/riscv/kernel/cpu.c

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17

arch/riscv/kernel/cpufeature.c

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