linux-kernel - Re: [RESEND PATCH 0/4] Rework sparc32 page-table layout

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Message-ID: <20200514072624.GA4280@willie-the-truck>
Date:   Thu, 14 May 2020 08:26:24 +0100
From:   Will Deacon <will@...nel.org>
To:     David Miller <davem@...emloft.net>
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        ndesaulniers@...gle.com, matt@...eblueprint.co.uk,
        sparclinux@...r.kernel.org, kernel-team@...roid.com,
        tglx@...utronix.de
Subject: Re: [RESEND PATCH 0/4] Rework sparc32 page-table layout

Hi David,

On Wed, May 13, 2020 at 03:32:26PM -0700, David Miller wrote:
> From: Will Deacon <will@...nel.org>
> Date: Tue, 14 Apr 2020 22:40:07 +0100
> 
> > This is a reposting of the patch series I sent previously to rework the
> > sparc32 page-table layout so that 'pmd_t' can be used safely with
> > READ_ONCE():
> > 
> > https://lore.kernel.org/lkml/20200324104005.11279-1-will@kernel.org
> > 
> > This is blocking the READ_ONCE() rework, which in turn allows us to
> > bump the minimum GCC version for building the kernel up to 4.8.
> 
> Series applied to sparc-next, thanks Will.

Thanks, although this was picked up by -tip a couple of days ago [1] since
the READ_ONCE() rework relies on it to avoid breaking the sparc32 build.

It's obviously harmless to go in both trees, but if you don't need it for
anything then you may want to drop these to avoid duplicate commits in
mainline.

Cheers,

Will

[1] https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=locking/kcsan