linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Yang Shi <shy828301@gmail.com>
Cc: 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: Tue, 18 Aug 2020 12:01:43 -0700	[thread overview]
Message-ID: <CAHk-=wjbaptBBKYS+XdCgdjU_RbFPaAd8EkT6_Un6CtNmezt9A@mail.gmail.com> (raw)
In-Reply-To: <20200815043041.132195-1-shy828301@gmail.com>

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.

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.

Thanks,

                Linus


  reply	other threads:[~2020-08-18 19:02 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 [this message]
2020-08-19  8:27   ` Will Deacon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAHk-=wjbaptBBKYS+XdCgdjU_RbFPaAd8EkT6_Un6CtNmezt9A@mail.gmail.com' \
    --to=torvalds@linux-foundation.org \
    --cc=akpm@linux-foundation.org \
    --cc=catalin.marinas@arm.com \
    --cc=hannes@cmpxchg.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=shy828301@gmail.com \
    --cc=stable@vger.kernel.org \
    --cc=will.deacon@arm.com \
    --cc=xuyu@linux.alibaba.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox