linux-kernel - Re: [PATCH 00/12] Avoid synchronous TLB invalidation for intermediate page-table entries on arm64

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Message-ID: <20180830171147.GP24082@hirez.programming.kicks-ass.net>
Date:   Thu, 30 Aug 2018 19:11:47 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Will Deacon <will.deacon@....com>
Cc:     linux-kernel@...r.kernel.org, benh@....ibm.com,
        torvalds@...ux-foundation.org, npiggin@...il.com,
        catalin.marinas@....com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 00/12] Avoid synchronous TLB invalidation for
 intermediate page-table entries on arm64

On Thu, Aug 30, 2018 at 05:15:34PM +0100, Will Deacon wrote:
> Peter Zijlstra (1):
>   asm-generic/tlb: Track freeing of page-table directories in struct
>     mmu_gather
> 
> Will Deacon (11):
>   arm64: tlb: Use last-level invalidation in flush_tlb_kernel_range()
>   arm64: tlb: Add DSB ISHST prior to TLBI in
>     __flush_tlb_[kernel_]pgtable()
>   arm64: pgtable: Implement p[mu]d_valid() and check in set_p[mu]d()
>   arm64: tlb: Justify non-leaf invalidation in flush_tlb_range()
>   arm64: tlbflush: Allow stride to be specified for __flush_tlb_range()
>   arm64: tlb: Remove redundant !CONFIG_HAVE_RCU_TABLE_FREE code
>   asm-generic/tlb: Guard with #ifdef CONFIG_MMU
>   asm-generic/tlb: Track which levels of the page tables have been
>     cleared
>   arm64: tlb: Adjust stride and type of TLBI according to mmu_gather
>   arm64: tlb: Avoid synchronous TLBIs when freeing page tables
>   arm64: tlb: Rewrite stale comment in asm/tlbflush.h
> 
>  arch/arm64/Kconfig                |   1 +
>  arch/arm64/include/asm/pgtable.h  |  10 +++-
>  arch/arm64/include/asm/tlb.h      |  34 +++++-------
>  arch/arm64/include/asm/tlbflush.h | 112 ++++++++++++++++++++++++--------------
>  include/asm-generic/tlb.h         |  85 +++++++++++++++++++++++++----
>  mm/memory.c                       |   4 +-
>  6 files changed, 168 insertions(+), 78 deletions(-)

These patches look good to me, thanks!

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>