RISC-V: remove toolchain version checks for Zicbom

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Commit b8c86872d1 ("riscv: fix detection of toolchain Zicbom
support") fixed building on systems where Zicbom was supported by the
compiler/assembler but not by the linker in an easily backportable
manner.
Now that the we have insn-defs for the 3 instructions, toolchain support
is no longer required for Zicbom.
Stop emitting "_zicbom" in -march when Zicbom is enabled & drop the
version checks entirely.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230108163356.3063839-4-conor@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Conor Dooley 2023-01-08 16:33:56 +00:00 • committed by Palmer Dabbelt

parent dd23e95358

commit 75c53905f8

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arch/riscv/Kconfig

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arch/riscv/Makefile

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