linux-kernel - Re: [PATCH] powerpc/hotplug: assign hot added LMB to the right node

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Message-ID: <X8ktsoAv4/h+p1/8@kroah.com>
Date:   Thu, 3 Dec 2020 19:25:54 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Laurent Dufour <ldufour@...ux.ibm.com>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Nathan Lynch <nathanl@...ux.ibm.com>,
        Scott Cheloha <cheloha@...ux.ibm.com>, stable@...r.kernel.org
Subject: Re: [PATCH] powerpc/hotplug: assign hot added LMB to the right node

On Thu, Dec 03, 2020 at 11:15:14AM +0100, Laurent Dufour wrote:
> This patch applies to 5.9 and earlier kernels only.
> 
> Since 5.10, this has been fortunately fixed by the commit
> e5e179aa3a39 ("pseries/drmem: don't cache node id in drmem_lmb struct").

Why can't we just backport that patch instead?  It's almost always
better to do that than to have a one-off patch, as almost always those
have bugs in them.

thanks,

greg k-h