x86/mm/cpa: Add debug mechanism
The whole static protection magic is silently fixing up anything which is handed in. That's just wrong. The offending call sites need to be fixed. Add a debug mechanism which emits a warning if a requested mapping needs to be fixed up. The DETECT debug mechanism is really not meant to be enabled except for developers, so limit the output hard to the protection fixups. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Reviewed-by: NDave Hansen <dave.hansen@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Bin Yang <bin.yang@intel.com> Cc: Mark Gross <mark.gross@intel.com> Link: https://lkml.kernel.org/r/20180917143546.078998733@linutronix.de
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