[PATCH 0/6] x86/entry: disallow #DB more

From: Peter Zijlstra
Date: Thu May 28 2020 - 16:24:35 EST

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These patches disallow #DB during NMI/#MC and allow removing a lot of fugly code.

Patch #6 should probably wait until we've got the KGDB situation sorted
because applying that makes a bad situation worse.

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