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Message-Id: <20220518101342.b1b17ab43331f31df33780ae@linux-foundation.org>
Date:   Wed, 18 May 2022 10:13:42 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Tong Tiangen <tongtiangen@...wei.com>,
        Will Deacon <will@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Arnd Bergmann <arnd@...db.de>,
        linux-arm-kernel@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, wangkefeng.wang@...wei.com,
        Guohanjun <guohanjun@...wei.com>,
        Xie XiuQi <xiexiuqi@...wei.com>, linux-mm@...ck.org
Subject: Re: [PATCH -next 2/2] arm64/mm: fix page table check compile error
 for CONFIG_PGTABLE_LEVELS=2

On Wed, 18 May 2022 17:28:38 +0100 Catalin Marinas <catalin.marinas@....com> wrote:

> On Tue, May 17, 2022 at 07:45:48AM +0000, Tong Tiangen wrote:
> > If CONFIG_PGTABLE_LEVELS=2 and CONFIG_ARCH_SUPPORTS_PAGE_TABLE_CHECK=y,
> > then we trigger a compile error:
> > 
> >   error: implicit declaration of function 'pte_user_accessible_page'
> > 
> > Move the definition of page table check helper out of branch
> > CONFIG_PGTABLE_LEVELS > 2
> > 
> > Fixes: daf214c14dbe ("arm64/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK")
> > Signed-off-by: Tong Tiangen <tongtiangen@...wei.com>
> 
> I'd drop the fixes tag here since the patch is queued in the mm tree and
> AFAIK that one doesn't have stable git commit ids.

MM tree is at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Commit ID's are stable if a commit is in the mm-hotfixes-stable,
mm-stable or mm-nonmm-stable branch.

Commit ID's are unstable if a commit is still in the
mm-hotfixes-unstable, mm-unstable or mm-unnonmm-stable.

I move patches from -unstable to -stable after they're considered ready
for it.  The delay is very variable, depends on how things are coming
along with that patch(set).


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