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SubjectRe: [patch 1/2] x86_64 page fault NMI-safe
> or similar. Wouldn't that be nice to have as a capability?

It means the NMI watchdog would get useless if these areas
become common.

Again I suspect all of this is not really needed anyways if
vmalloc_sync_all() works properly. That would solve the original
problem Mathieu was trying to solve for per_cpu data. The rule
would be just to call vmalloc_sync_all() properly when changing
per CPU data too.

In fact I'm pretty sure it worked originally. Perhaps it regressed?

-- -- Speaking for myself only.

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