linux-kernel - Re: [PATCH 07/12] mips: Add reserve-nomap memory type support

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Message-ID: <MWHPR2201MB1277D76A39CA0146537BFEB4C1340@MWHPR2201MB1277.namprd22.prod.outlook.com>
Date:   Thu, 2 May 2019 18:35:54 +0000
From:   Paul Burton <paul.burton@...s.com>
To:     Serge Semin <fancer.lancer@...il.com>
CC:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <pburton@...ecomp.com>,
        James Hogan <jhogan@...nel.org>,
        Matt Redfearn <matt.redfearn@...s.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Bogendoerfer <tbogendoerfer@...e.de>,
        Huacai Chen <chenhc@...ote.com>,
        Stefan Agner <stefan@...er.ch>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Juergen Gross <jgross@...e.com>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>
Subject: Re: [PATCH 07/12] mips: Add reserve-nomap memory type support

Hello,

Serge Semin wrote:
> It might be necessary to prevent the virtual mapping creation for a
> requested memory region. For instance there is a "no-map" property
> indicating exactly this feature. In this case we need to not only
> reserve the specified region by pretending it doesn't exist in the
> memory space, but completely remove the range from system just by
> removing it from memblock. The same way it's done in default
> early_init_dt_reserve_memory_arch() method.
> 
> Signed-off-by: Serge Semin <fancer.lancer@...il.com>

Applied to mips-next.

Thanks,
    Paul

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