linux-kernel - Re: [PATCH 6/6] mm: proc: Avoid fullmm flush for young/dirty bit toggling

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Message-ID: <20201124144653.GJ2414@hirez.programming.kicks-ass.net>
Date:   Tue, 24 Nov 2020 15:46:53 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Yu Zhao <yuzhao@...gle.com>
Cc:     Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, Catalin Marinas <catalin.marinas@....com>,
        Minchan Kim <minchan@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 6/6] mm: proc: Avoid fullmm flush for young/dirty bit
 toggling

On Fri, Nov 20, 2020 at 01:40:05PM -0700, Yu Zhao wrote:

> It seems to me ARM's interpretation of tlb->fullmm is a special case,
> not the other way around.

I don't think ARM is special here, IIRC there were more architectures
that did that.