linux-kernel - Re: [PATCH v3 3/3] docs: core-api: add memory allocation guide

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] [day] [month] [year] [list]

Date:   Thu, 13 Sep 2018 16:41:27 -0600
From:   Jonathan Corbet <corbet@....net>
To:     Mike Rapoport <rppt@...ux.vnet.ibm.com>
Cc:     Michal Hocko <mhocko@...e.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Matthew Wilcox <willy@...radead.org>,
        Vlastimil Babka <vbabka@...e.cz>, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/3] docs: core-api: add memory allocation guide

On Wed, 12 Sep 2018 13:33:06 +0300
Mike Rapoport <rppt@...ux.vnet.ibm.com> wrote:

> How about:
> 
>     ``GFP_HIGHUSER_MOVABLE`` does not require that allocated memory
>     will be directly accessible by the kernel and implies that the
>     data is movable.
> 
>     ``GFP_HIGHUSER`` means that the allocated memory is not movable,
>     but it is not required to be directly accessible by the kernel. An
>     example may be a hardware allocation that maps data directly into
>     userspace but has no addressing limitations.
> 
>     ``GFP_USER`` means that the allocated memory is not movable and it
>     must be directly accessible by the kernel

Sounds good to me.

Thanks,

jon