linux-kernel - Re: [PATCH 4.14 023/159] mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM

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Date:   Mon, 08 Jan 2018 10:45:32 +0100
From:   Mike Galbraith <efault@....de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Michal Hocko <mhocko@...nel.org>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...capital.net>,
        Borislav Petkov <bp@...e.de>,
        Cyrill Gorcunov <gorcunov@...nvz.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>, linux-mm@...ck.org,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 4.14 023/159] mm/sparsemem: Allocate mem_section at
 runtime for CONFIG_SPARSEMEM_EXTREME=y

On Mon, 2018-01-08 at 09:33 +0100, Greg Kroah-Hartman wrote:
> On Mon, Jan 08, 2018 at 09:15:33AM +0100, Mike Galbraith wrote:
> 
> > > It was part of the prep for the KTPI code from what I can tell.  If you
> > > think it should be reverted, just let me know and I'll be glad to do so.
> > 
> > No preference here.  I have to patch master regardless if I want kdump
> > to work while I patiently wait for userspace to get fixed up (either
> > that or use time I don't have to go fix it up myself).
> 
> I'll stay "bug compatible" for the time being.  If you do fix this up,
> can you add a cc: stable tag in your patch so I can pick it up when it
> gets merged?

Userspace (makedumpfile) will have to adapt, not the kernel. Meanwhile
I carry reverts, making kernels, kdump and myself all happy campers.

	-Mike