linux-kernel - Re: [PATCH] arm64: mm: free unused memmap for sparse memory model that define VMEMMAP

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Message-ID: <dce65cf2-399b-28a7-8375-c8d5a69a9c81@arm.com>
Date:   Thu, 23 Jul 2020 08:03:13 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Wei Li <liwei213@...wei.com>, catalin.marinas@....com,
        will@...nel.org
Cc:     song.bao.hua@...ilicon.com, sujunfei2@...ilicon.com,
        saberlily.xia@...ilicon.com, linux-arm-kernel@...ts.infradead.org,
        steve.capper@....com, puck.chen@...ilicon.com,
        linux-kernel@...r.kernel.org, rppt@...ux.ibm.com,
        fengbaopeng2@...ilicon.com, nsaenzjulienne@...e.de,
        butao@...ilicon.com
Subject: Re: [PATCH] arm64: mm: free unused memmap for sparse memory model
 that define VMEMMAP



On 07/21/2020 01:02 PM, Wei Li wrote:
> For the memory hole, sparse memory model that define SPARSEMEM_VMEMMAP
> do not free the reserved memory for the page map, this patch do it.
> 
> Signed-off-by: Wei Li <liwei213@...wei.com>
> Signed-off-by: Chen Feng <puck.chen@...ilicon.com>
> Signed-off-by: Xia Qing <saberlily.xia@...ilicon.com>
> ---
>  arch/arm64/mm/init.c | 81 +++++++++++++++++++++++++++++++++++++++++++++-------
>  1 file changed, 71 insertions(+), 10 deletions(-)

This patch does not compile on 5.8-rc6 with defconfig.