linux-kernel - Re: [PATCH v4 4/5] mm: make processing of movable

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <235f2d20-cf84-08df-1fb4-08ee258fdc52@gmail.com>
Date:   Tue, 11 Oct 2016 23:26:19 +1100
From:   Balbir Singh <bsingharora@...il.com>
To:     Reza Arbab <arbab@...ux.vnet.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Bharata B Rao <bharata@...ux.vnet.ibm.com>,
        Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
        Stewart Smith <stewart@...ux.vnet.ibm.com>,
        Alistair Popple <apopple@....ibm.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Tang Chen <tangchen@...fujitsu.com>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        devicetree@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v4 4/5] mm: make processing of movable_node arch-specific



On 07/10/16 05:36, Reza Arbab wrote:
> Currently, CONFIG_MOVABLE_NODE depends on X86_64. In preparation to
> enable it for other arches, we need to factor a detail which is unique
> to x86 out of the generic mm code.
> 
> Specifically, as documented in kernel-parameters.txt, the use of
> "movable_node" should remain restricted to x86:
> 
> movable_node    [KNL,X86] Boot-time switch to enable the effects
>                 of CONFIG_MOVABLE_NODE=y. See mm/Kconfig for details.
> 
> This option tells x86 to find movable nodes identified by the ACPI SRAT.
> On other arches, it would have no benefit, only the undesired side
> effect of setting bottom-up memblock allocation.
> 
> Since #ifdef CONFIG_MOVABLE_NODE will no longer be enough to restrict
> this option to x86, move it to an arch-specific compilation unit
> instead.
> 
> Signed-off-by: Reza Arbab <arbab@...ux.vnet.ibm.com>

Acked-by: Balbir Singh <bsingharora@...il.com>