x86/mm/tlb: Privatize cpu_tlbstate

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cpu_tlbstate is mostly private and only the variable is_lazy is shared.
This causes some false-sharing when TLB flushes are performed.

Break cpu_tlbstate intro cpu_tlbstate and cpu_tlbstate_shared, and mark
each one accordingly.

Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/r/20210220231712.2475218-6-namit@vmware.com

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Nadav Amit 2021-02-20 15:17:08 -08:00 • committed by Ingo Molnar

parent 4ce94eabac

commit 2f4305b19f

4 changed files with 33 additions and 27 deletions

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39

arch/x86/include/asm/tlbflush.h

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2

arch/x86/kernel/alternative.c

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2

arch/x86/mm/init.c

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17

arch/x86/mm/tlb.c

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