Re: [PATCH 09/11] x86: rework CONFIG_GENERIC_CPU compiler flags

[Nathan Chancellor]

Hi Arnd,

On Wed, Dec 04, 2024 at 11:30:40AM +0100, Arnd Bergmann wrote:
...
> +++ b/arch/x86/Kconfig.cpu
> +config X86_64_V1
> +config X86_64_V2
> +config X86_64_V3
...
> +++ b/arch/x86/Makefile
> +        cflags-$(CONFIG_MX86_64_V1)	+= -march=x86-64
> +        cflags-$(CONFIG_MX86_64_V2)	+= $(call cc-option,-march=x86-64-v2,-march=x86-64)
> +        cflags-$(CONFIG_MX86_64_V3)	+= $(call cc-option,-march=x86-64-v3,-march=x86-64)
...
> +        rustflags-$(CONFIG_MX86_64_V1)	+= -Ctarget-cpu=x86-64
> +        rustflags-$(CONFIG_MX86_64_V2)	+= -Ctarget-cpu=x86-64-v2
> +        rustflags-$(CONFIG_MX86_64_V3)	+= -Ctarget-cpu=x86-64-v3

There appears to be an extra 'M' when using these CONFIGs in Makefile,
so I don't think this works as is?

Cheers,
Nathan