Re: [PATCH v2] /dev/mem: use phys_addr_t for physical addresses
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- To: Cyril Chemparathy <cyril@xxxxxx>
- Subject: Re: [PATCH v2] /dev/mem: use phys_addr_t for physical addresses
- From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
- Date: Wed, 12 Sep 2012 11:15:03 -0700
- Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, arnd@xxxxxxxx, dhowells@xxxxxxxxxx, fenghua.yu@xxxxxxxxx, lethal@xxxxxxxxxxxx, linux@xxxxxxxxxxxxxxxx, nico@xxxxxxxxxx, rob.herring@xxxxxxxxxxx, tony.luck@xxxxxxxxx, tony@xxxxxxxxxxx, will.deacon@xxxxxxx
- In-reply-to: <1347473158-7219-1-git-send-email-cyril@ti.com>
- List-id: <linux-ia64.vger.kernel.org>
- References: <1347473158-7219-1-git-send-email-cyril@ti.com>
- User-agent: Mutt/1.5.21 (2010-09-15)
On Wed, Sep 12, 2012 at 02:05:58PM -0400, Cyril Chemparathy wrote:
> This patch fixes the /dev/mem driver to use phys_addr_t for physical
> addresses. This is required on PAE systems, especially those that run
> entirely out of >4G physical memory space.
What is the symptom if this patch is not applied? Does it need to be
backported to older kernels? If so, which ones?
thanks,
greg k-h
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