linux-kernel - Re: [PATCH] arm64, numa: Add cpu_to

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Message-ID: <20160920132120.GQ25086@rric.localdomain>
Date:   Tue, 20 Sep 2016 15:21:20 +0200
From:   Robert Richter <rric@...nel.org>
To:     Hanjun Guo <hanjun.guo@...aro.org>
Cc:     David Daney <ddaney.cavm@...il.com>, linux-kernel@...r.kernel.org,
        Marc Zyngier <marc.zyngier@....com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Will Deacon <will.deacon@....com>,
        Ganapatrao Kulkarni <gkulkarni@...iumnetworks.com>,
        linux-arm-kernel@...ts.infradead.org,
        David Daney <david.daney@...ium.com>, xieyisheng1@...wei.com
Subject: Re: [PATCH] arm64, numa: Add cpu_to_node() implementation.

On 20.09.16 19:32:34, Hanjun Guo wrote:
> On 09/20/2016 06:43 PM, Robert Richter wrote:

> >Unfortunately either your nor my code does fix the BUG_ON() I see with
> >the numa kernel:
> >
> >  kernel BUG at mm/page_alloc.c:1848!
> >
> >See below for the core dump. It looks like this happens due to moving
> >a mem block where first and last page are mapped to different numa
> >nodes, thus, triggering the BUG_ON().
> 
> Didn't triggered it on our NUMA hardware, could you provide your
> config then we can have a try?

Config attached. Other configs with an initrd fail too.

-Robert

Download attachment "config-4.8.0-rc5.vanilla5.xz" of type "application/x-xz" (35316 bytes)