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Message-ID: <ZTJBdY7CLhHLeVmh@gmail.com>
Date: Fri, 20 Oct 2023 10:59:33 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Qi Zheng <zhengqi.arch@...edance.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Mike Rapoport <rppt@...nel.org>,
David Hildenbrand <david@...hat.com>,
Michal Hocko <mhocko@...e.com>, x86@...nel.org,
Andy Lutomirski <luto@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v2] x86/mm: Drop 4MB restriction on minimal NUMA node
memory size
* Ingo Molnar <mingo@...nel.org> wrote:
> > > Mind resubmitting that to the MM folks, with the NULL dereference
> > > crash mentioned prominently? Feel free to Cc: me.
> >
> > OK, I will resend it if no one else objects. :)
>
> Thanks, much appreciated - and I see Andrew already applied your two
> fixes to -mm.
>
> With that background I was able to apply the x86 fix as well - which can
> be backported without the MM changes. The current commit in tip:x86/mm
> is:
>
> a1e2b8b36820 ("x86/mm: Drop the 4 MB restriction on minimal NUMA node memory size")
>
> Which should hit v6.7 in about ~1.5 weeks, unless there's unexpected
> problems.
Note that I haven't added a Cc: stable tag, a 17 years old bug is not
really a regression - but I have no objections against this fix getting
into -stable once it gains a bit more testing and hits upstream.
Thanks,
Ingo
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