From: Andrew Morton <akpm@linux-foundation.org>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Lin Feng <linfeng@cn.fujitsu.com>,
Christoph Lameter <cl@linux.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Catalin Marinas <catalin.marinas@arm.com>,
will.deacon@arm.com, Arnd Bergmann <arnd@arndb.de>,
tony@atomide.com, Ben Hutchings <ben@decadent.org.uk>,
linux-arm-kernel@lists.infradead.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Linux MM <linux-mm@kvack.org>,
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Subject: Re: [PATCH 0/2] mm: vmemmap: add vmemmap_verify check for hot-add node/memory case
Date: Mon, 8 Apr 2013 13:55:53 -0700 [thread overview]
Message-ID: <20130408135553.2f60518d923b6920bdf1931f@linux-foundation.org> (raw)
In-Reply-To: <CAE9FiQVaByGOTjLVthRkEze_ekXm5LAKgKdHzrD+q1iYmjgZFQ@mail.gmail.com>
On Mon, 8 Apr 2013 11:40:11 -0700 Yinghai Lu <yinghai@kernel.org> wrote:
> On Mon, Apr 8, 2013 at 2:56 AM, Lin Feng <linfeng@cn.fujitsu.com> wrote:
> > In hot add node(memory) case, vmemmap pages are always allocated from other
> > node,
>
> that is broken, and should be fixed.
> vmemmap should be on local node even for hot add node.
>
That would be nice.
I don't see much value in the added warnings, really. Because there's
nothing the user can *do* about them, apart from a) stop using NUMA, b)
stop using memory hotplug, c) become a kernel MM developer or d) switch
to Windows.
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next prev parent reply other threads:[~2013-04-08 20:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-08 9:56 Lin Feng
2013-04-08 9:56 ` [PATCH 1/2] mm: vmemmap: x86: add vmemmap_verify check for hot-add node case Lin Feng
2013-04-08 10:23 ` Lin Feng
2013-04-08 9:56 ` [PATCH 2/2] mm: vmemmap: arm64: " Lin Feng
2013-04-08 10:55 ` Will Deacon
2013-04-09 2:07 ` Lin Feng
2013-04-08 18:40 ` [PATCH 0/2] mm: vmemmap: add vmemmap_verify check for hot-add node/memory case Yinghai Lu
2013-04-08 20:55 ` Andrew Morton [this message]
2013-04-09 1:58 ` Lin Feng
2013-04-09 2:02 ` Lin Feng
2013-04-11 7:41 ` Tang Chen
2013-04-11 15:10 ` Yinghai Lu
2013-04-12 1:13 ` Tang Chen
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