Re: man-pages-2.57 is released

Michael Kerrisk
2007-06-18T15:02:05Z

> Michael Kerrisk <mtk-manpages@gmx.net> wrote:
>
> > ./man2/ioperm.2
> > FIXME is the following ("Only the first 0x3ff I/O ports can be
> > specified in this manner") still true? Looking at changes in
> > include/asm-i386/processor.h between 2.4 and 2.6 suggests
> > that the limit is different in 2.6.
>
> You now have the full 64Kb port bitmap (8 KB).
> BTW1: linux/arch/i386/kernel/ioport.c still states having 8K of
> bitmaps to
> be excessive (and implicitely and now wrongly as not being done). Since
> there should only be few processes requiring iopl, the 8K should not be
> excessive. We need a native speaker to change this text, at least not me
> right now.

If someone can come up with a technical description of what
should should go in the man page, I'm happy to fix the English.

> CC Linus, because he admitted fiddeling with this file. (No MAINTAINER
> found)
>
>
> BTW2: My (possibly outdated) iopl manpage states that you'll need to be
> root
> change the iopl, but you only need CAP_SYS_RAWIO in order to increase the
> iopl.

The current page includes this text under ERRORS

EPERM The calling process has insufficient privilege to
call iopl(); the CAP_SYS_RAWIO capability is
required.

Cheers,

Michael
--
Michael Kerrisk
maintainer of Linux man pages Sections 2, 3, 4, 5, and 7

Want to help with man page maintenance?
Grab the latest tarball at
http://www.kernel.org/pub/linux/docs/manpages ,
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