From: Will Deacon <will@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Yang Shi <shy828301@gmail.com>, Yu Xu <xuyu@linux.alibaba.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
stable <stable@vger.kernel.org>
Subject: Re: [v3 PATCH] mm/memory.c: skip spurious TLB flush for retried page fault
Date: Wed, 19 Aug 2020 09:27:47 +0100 [thread overview]
Message-ID: <20200819082747.GA17345@willie-the-truck> (raw)
In-Reply-To: <CAHk-=wjbaptBBKYS+XdCgdjU_RbFPaAd8EkT6_Un6CtNmezt9A@mail.gmail.com>
On Tue, Aug 18, 2020 at 12:01:43PM -0700, Linus Torvalds wrote:
> On Mon, Aug 17, 2020 at 2:04 PM Yang Shi <shy828301@gmail.com> wrote:
> >
> > We could just skip the spurious TLB flush to mitigate the regression.
>
> Ok, this patch I will apply.
Cheers.
> I still hope that arm64 fixes (maybe already fixed) their spurious TLB
> function, and I think we should rename it to make sure everybody
> understands it's local, but in the meantime this patch hides the
> regression and isn't wrong.
I'll look at it for 5.10.
Will
prev parent reply other threads:[~2020-08-19 8:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-15 4:30 Yang Shi
2020-08-18 19:01 ` Linus Torvalds
2020-08-19 8:27 ` Will Deacon [this message]
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