From: David Vrabel <david.vrabel@citrix.com>
To: Mel Gorman <mgorman@suse.de>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: vmemmap_verify() BUGs during memory hotplug (4.2-rc1 regression)
Date: Tue, 28 Jul 2015 18:09:30 +0100 [thread overview]
Message-ID: <55B7B74A.8080207@citrix.com> (raw)
In-Reply-To: <20150727154146.GP2561@suse.de>
On 27/07/15 16:41, Mel Gorman wrote:
> On Mon, Jul 27, 2015 at 04:32:45PM +0100, David Vrabel wrote:
>> Mel,
>>
>> As of commit 8a942fdea560d4ac0e9d9fabcd5201ad20e0c382 (mm: meminit: make
>> __early_pfn_to_nid SMP-safe and introduce meminit_pfn_in_nid)
>> vmemmap_verify() will BUG_ON() during memory hotplug because of its use
>> of early_pfn_to_nid(). Previously, it would have reported bogus (or
>> failed to report valid) warnings.
>>
>
> Please test "mm, meminit: Allow early_pfn_to_nid to be used during
> runtime"
That fixed the BUG_ON() thanks. But I still can't only the new sections
because their first page is not reserved, but I've not had time to
investigate why this is yet.
David
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prev parent reply other threads:[~2015-07-28 17:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-27 15:32 vmemmap_verify() BUGs during memory hotplug (4.2-rc1 regression) David Vrabel
2015-07-27 15:41 ` Mel Gorman
2015-07-28 17:09 ` David Vrabel [this message]
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