From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Pavithra Prakash <pavrampu@in.ibm.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Mahesh J Salgaonkar <mahesh@linux.vnet.ibm.com>,
Hari Bathini <hbathini@linux.vnet.ibm.com>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
Michael Bringmann <mbringm@us.ibm.com>
Subject: Re: powerpc/numa: Skip onlining a offline node in kdump path
Date: Sat, 6 Oct 2018 22:14:13 +1000 (AEST) [thread overview]
Message-ID: <42S5CB0SzVz9s4Z@ozlabs.org> (raw)
In-Reply-To: <1538106452-7643-1-git-send-email-srikar@linux.vnet.ibm.com>
On Fri, 2018-09-28 at 03:47:32 UTC, Srikar Dronamraju wrote:
> With Commit 2ea626306810 ("powerpc/topology: Get topology for shared
> processors at boot"), kdump kernel on shared lpar may crash.
>
> The necessary conditions are
> - Shared Lpar with atleast 2 nodes having memory and CPUs.
> - Memory requirement for kdump kernel must be met by the first N-1 nodes
> where there are atleast N nodes with memory and CPUs.
...
>
> As part of fix, detect and skip early onlining of a offline node.
>
> Fixes: 2ea626306810 ("powerpc/topology: Get topology for shared processors at boot")
> Reported-by: Pavithra Prakash <pavrampu@in.ibm.com>
> Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
> Tested-by: Hari Bathini <hbathini@linux.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/ac1788cc7da4ce54edcfd2e499afdb
cheers
prev parent reply other threads:[~2018-10-06 12:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-28 3:47 [PATCH] powerpc/numa: Skip onlining a offline node in kdump path Srikar Dronamraju
2018-10-01 13:20 ` Hari Bathini
2018-10-06 12:14 ` Michael Ellerman [this message]
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