Re: [PATCH 06/14] Pramfs: Include files

[Marco Stornelli]

2009/6/23 Arnd Bergmann <arnd@xxxxxxxx>:
> On Tuesday 23 June 2009, David Woodhouse wrote:
>> And dd on /dev/mem would work, surely?
>
> Actually, reading from /dev/mem is only valid on real RAM. If the nvram
> is part of an IO memory mapping, you have to do mmap()+memcpy() rather
> than read(). So dd won't do it, but it's still easy to read from user
> space.

For "security" reasons pram reserve the region of memory with
reserve_mem_region_exclusive().....

>
>> I'd definitely recommend making it fixed-endian. Not doing so for JFFS2
>> was a mistake I frequently regretted.
>
> Right.
>
>        Arnd <><
>
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