RISC-V: Implement multi-letter ISA extension probing framework

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Multi-letter extensions can be probed using exising
riscv_isa_extension_available API now. It doesn't support versioning
right now as there is no use case for it.
Individual extension specific implementation will be added during
each extension support.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Atish Patra 2022-03-14 13:38:43 -07:00 • committed by Palmer Dabbelt

parent 40a4d0dfbc

commit 02d52fbd94

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18

arch/riscv/include/asm/hwcap.h

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22

arch/riscv/kernel/cpufeature.c

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