Re: [PATCH v2] x86/bugs: Break down mitigations configurations

[Pawan Gupta]

On Fri, Jun 16, 2023 at 09:48:50AM -0700, Breno Leitao wrote:
> There is no way to disable MDS, TAA, MMIO Stale data mitigation today at
> compilation time. These mitigations are enabled even if
> CONFIG_SPECULATION_MITIGATIONS is unset.
> 
> Create a new KCONFIG option for each mitigation under
> CONFIG_SPECULATION_MITIGATIONS that allows these
> mitigations to be disabled by default at compilation time.

I don't think all mitigations are still controllable at build-time e.g.
spectre_v2 eIBRS mitigation will still be deployed irrespective of the
config.