Re: v2.4.19-rmk4 slab.c: /proc/slabinfo uses broken instead of slab labels

Russell King (rmk@arm.linux.org.uk)
Thu, 28 Nov 2002 22:40:28 +0000

On Thu, Nov 28, 2002 at 11:34:20PM +0100, Manfred Spraul wrote:
> On i386, it's possible to skip set_fs() and use __get_user() - but
> that's i386 specific. For example the i386 oops code uses that.

That isn't actually an x86 specific feature - it is a requirement across
all architectures that get_user() and friends can access kernel areas
after set_fs(get_ds())

That's how things like sys_execve() can read the binary headers, etc.
See linux/fs/exec.c:kernel_read() for one such example.

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html


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