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

From: Arnd Bergmann
Date: Tue Jun 23 2009 - 17:56:14 EST


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.

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

Right.

Arnd <><
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/