From: Hugh Dickins <hughd@google.com>
To: Will Deacon <will@kernel.org>
Cc: Android Kernel Team <kernel-team@android.com>,
Jan Kara <jack@suse.cz>, Minchan Kim <minchan@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Hugh Dickins <hughd@google.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
Vinayak Menon <vinmenon@codeaurora.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 0/3] Create 'old' ptes for faultaround mappings on arm64 with hardware access flag
Date: Mon, 11 Jan 2021 13:03:29 -0800 (PST) [thread overview]
Message-ID: <alpine.LSU.2.11.2101111254390.2227@eggly.anvils> (raw)
In-Reply-To: <20210111133007.GA7642@willie-the-truck>
On Mon, 11 Jan 2021, Will Deacon wrote:
> On Fri, Jan 08, 2021 at 11:34:08AM -0800, Linus Torvalds wrote:
> > On Fri, Jan 8, 2021 at 9:15 AM Will Deacon <will@kernel.org> wrote:
> > >
> > > The big difference in this version is that I have reworked it based on
> > > Kirill's patch which he posted as a follow-up to the original. However,
> > > I can't tell where we've landed on that -- Linus seemed to like it, but
> > > Hugh was less enthusiastic.
> >
> > Yeah, I like it, but I have to admit that it had a disturbingly high
> > number of small details wrong for several versions. I hope you picked
> > up the final version of the code.
>
> I picked the version from here:
>
> https://lore.kernel.org/r/20201229132819.najtavneutnf7ajp@box
>
> and actually, I just noticed that willy spotted a typo in a comment, so
> I'll fix that locally as well as adding the above to a 'Link:' tag for
> reference.
>
> > At the same time, I do think that the "disturbingly high number of
> > issues" was primarily exactly _because_ the old code was so
> > incomprehensible, and I think the end result is much cleaner, so I
> > still like it.
Just to report that I gave this v2 set a spin on a few (x86_64 and i386)
machines, and found nothing objectionable this time around.
And the things that I'm unenthusiastic about are exactly those details
that you and Kirill and Linus find unsatisfactory, but awkward to
eliminate: expect no new insights from me!
Hugh
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-11 21:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 17:15 [PATCH v2 0/3] Create 'old' ptes for faultaround mappings on arm64 with hardware access flag Will Deacon
2021-01-08 17:15 ` [PATCH v2 1/3] mm: Cleanup faultaround and finish_fault() codepaths Will Deacon
2021-01-11 14:26 ` Kirill A. Shutemov
2021-01-11 14:27 ` Will Deacon
2021-01-08 17:15 ` [PATCH v2 2/3] mm: Allow architectures to request 'old' entries when prefaulting Will Deacon
2021-01-11 14:25 ` Kirill A. Shutemov
2021-01-11 14:37 ` Will Deacon
2021-01-11 14:47 ` Kirill A. Shutemov
2021-01-08 17:15 ` [PATCH v2 3/3] arm64: mm: Implement arch_wants_old_prefaulted_pte() Will Deacon
2021-01-08 19:34 ` [PATCH v2 0/3] Create 'old' ptes for faultaround mappings on arm64 with hardware access flag Linus Torvalds
2021-01-08 19:42 ` Linus Torvalds
2021-01-11 14:01 ` Will Deacon
2021-01-11 13:30 ` Will Deacon
2021-01-11 21:03 ` Hugh Dickins [this message]
2021-01-12 21:46 ` Will Deacon
2021-01-11 14:24 ` Kirill A. Shutemov
2021-01-11 19:25 ` Linus Torvalds
2021-01-12 21:47 ` Will Deacon
2021-01-12 21:55 ` Linus Torvalds
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=alpine.LSU.2.11.2101111254390.2227@eggly.anvils \
--to=hughd@google.com \
--cc=akpm@linux-foundation.org \
--cc=catalin.marinas@arm.com \
--cc=jack@suse.cz \
--cc=kernel-team@android.com \
--cc=kirill.shutemov@linux.intel.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=minchan@kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=vinmenon@codeaurora.org \
--cc=will@kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).