On 27.04.22 14:26, Borislav Petkov wrote:
On Wed, Apr 27, 2022 at 08:40:08AM +0200, Juergen Gross wrote:I was planning to look at the x86 cpu features to see whether some of those might be candidates to be switched to platform features instead.I'd say "never touch a running system" unless the platform features are of an advantage...
Depends on the use case IMHO. All features being based on a cpuid bit are no candidates. Same applies to all features used for alternative handling (assuming we don't want to expand that to platform features). I really have no idea whether this will leave any candidates. In case it does, it might be interesting to switch those in order to save some per-cpu bits. Other candidates might be the x86_legacy_features. Juergen
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