linux-kernel - Re: [PATCH 4/4] memremap: provide a not device managed memremap

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: <20190816140057.c1ab8b41b9bfff65b7ea83ba@linux-foundation.org>
Date:   Fri, 16 Aug 2019 14:00:57 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Bharata B Rao <bharata@...ux.ibm.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, linux-nvdimm@...ts.01.org
Subject: Re: [PATCH 4/4] memremap: provide a not device managed
 memremap_pages

On Fri, 16 Aug 2019 08:54:34 +0200 Christoph Hellwig <hch@....de> wrote:

> The kvmppc ultravisor code wants a device private memory pool that is
> system wide and not attached to a device.  Instead of faking up one
> provide a low-level memremap_pages for it.  Note that this function is
> not exported, and doesn't have a cleanup routine associated with it to
> discourage use from more driver like users.

Confused. Which function is "not exported"?

> +EXPORT_SYMBOL_GPL(memunmap_pages);
> +EXPORT_SYMBOL_GPL(memremap_pages);
>  EXPORT_SYMBOL_GPL(devm_memremap_pages);