Re: [PATCH v4 05/16] riscv: Extend cpufeature.c to detect vendor extensions

[Conor Dooley]

On Fri, Apr 26, 2024 at 02:29:19PM -0700, Charlie Jenkins wrote:
> Separate vendor extensions out into one struct per vendor
> instead of adding vendor extensions onto riscv_isa_ext.
> 
> Add a hidden config RISCV_ISA_VENDOR_EXT to conditionally include this
> code.
> 
> The xtheadvector vendor extension is added using these changes.
> 
> Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
> ---
>  arch/riscv/Kconfig                               |  2 +
>  arch/riscv/Kconfig.vendor                        | 19 ++++++
>  arch/riscv/include/asm/cpufeature.h              | 18 ++++++
>  arch/riscv/include/asm/vendor_extensions.h       | 26 ++++++++
>  arch/riscv/include/asm/vendor_extensions/thead.h | 19 ++++++
>  arch/riscv/kernel/Makefile                       |  2 +
>  arch/riscv/kernel/cpufeature.c                   | 77 ++++++++++++++++++------
>  arch/riscv/kernel/vendor_extensions.c            | 18 ++++++
>  arch/riscv/kernel/vendor_extensions/Makefile     |  3 +
>  arch/riscv/kernel/vendor_extensions/thead.c      | 36 +++++++++++

I see no modifications to cpu.c here, is it intentional that vendor
stuff isn't gonna show up in /proc/cpuinfo?

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