[RFC][PATCH 0/7] x86/debug: Untangle handle_debug()

From: Peter Zijlstra
Date: Thu Aug 20 2020 - 06:54:24 EST

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Hi,

handle_debug() is a mess, and now that we have separate user and kernel paths,
try and clean it up.

Included amluto's fix for convenience.

The whole set passes x86-selftests and the RR DR0 testcase.

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