asm-generic/tlb: Track freeing of page-table directories in struct mmu_gather

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Some architectures require different TLB invalidation instructions
depending on whether it is only the last-level of page table being
changed, or whether there are also changes to the intermediate
(directory) entries higher up the tree.

Add a new bit to the flags bitfield in struct mmu_gather so that the
architecture code can operate accordingly if it's the intermediate
levels being invalidated.

Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Peter Zijlstra 2018-08-23 20:27:25 +01:00 • committed by Will Deacon

parent faaadaf315

commit 22a61c3c4f

1 changed files with 23 additions and 8 deletions

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include/asm-generic/tlb.h

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