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SubjectRe: [PATCH] x86: introduce a new Linux defined feature flag for PAT support
> For old CPUs it is actually ok (after all they worked for years without
> PAT), I just don't like it for new CPUs. It's a bad idea there and
> in the x86 world it is a reasonable expectation that CPU features
> generally work.

Agreed 100%. We should default to assuming newer processors work. That
will be true in almost if not all cases anyway, and since it'll bite
anyone at Intel/AMD/.. testing new CPU steppings when it is on by default
any problem cases won't be leaving the labs.

Alan


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