x86/mm/cpa: Move flush_tlb_all()

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There is an atom errata, where we do a local TLB invalidate right
before we return and then do a global TLB invalidate.

Move the global invalidate up a little bit and avoid the local
invalidate entirely.

This does put the global invalidate under pgd_lock, but that shouldn't
matter.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Cc: Bin Yang <bin.yang@intel.com>
Cc: Mark Gross <mark.gross@intel.com>
Link: https://lkml.kernel.org/r/20180919085947.882287392@infradead.org

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Peter Zijlstra 2018-09-19 10:50:18 +02:00 • committed by Thomas Gleixner

parent c6185b1f21

commit c0a759abf5

1 changed files with 17 additions and 27 deletions

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arch/x86/mm/pageattr.c

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