linux-kernel - Re: [PATCH 1/5] mm: Introduce ARCH_MHP_MEMMAP_ON_MEMORY

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Date:   Tue, 12 Jan 2021 08:26:47 +0100
From:   Oscar Salvador <osalvador@...e.de>
To:     David Hildenbrand <david@...hat.com>
Cc:     akpm@...ux-foundation.org, mhocko@...nel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, vbabka@...e.cz,
        pasha.tatashin@...een.com
Subject: Re: [PATCH 1/5] mm: Introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE

On Mon, Jan 11, 2021 at 05:52:19PM +0100, David Hildenbrand wrote:
> On 17.12.20 14:07, Oscar Salvador wrote:
> > In order to use self-hosted memmap array, the platform needs to have
> > support for CONFIG_SPARSEMEM_VMEMMAP and altmap.
> > Currently, only arm64, PPC and x86_64 have the support, so enable those
> > platforms with ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE.
> 
> "In the first version, only .... will support it".

I will try to be more specific.

> 
> I'd probably split off enabling it per architecture in separate patches
> and the end of the series.

You mean introducing only mm/Kconfig change in this patch, and then
arch/*/Kconfig changes in separate patches at the end of the series?

I can certainly do that, not sure how much will help with the review,
but it might help when bisecting.

> Apart from that looks good.

Thanks for taking a look David!


-- 
Oscar Salvador
SUSE L3