Re: CVS commit: src/regress/sys/arch/i386

[yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)]

[ cc: port-i386 ]

> On Fri, Jan 04, 2008 at 07:27:05PM +0100, Matthias Drochner wrote:
> 
> > 
> > yamt%NetBSD.org@localhost said:
> > > Log Message: test i386_get_ioperm/i386_set_ioperm. 
> > 
> > This reminds me of something: Because this syscall is
> > practically useless and the bitmap just uses up pcb bits
> > and kernel stack, I had once reduced it to a COMPAT
> > option, setting iopl if any access is allowed by the
> > bitmap, somewhere in a local tree, before the i386/amd64
> > unification.
> > This would make that the (faked) bitmap returned by
> > get_ioperm() would not necessarily be identical to the one
> > sent by set_ioperm(). I didn't find any userland program
> > using the ioperm calls, let alone reading back the bitmasks.
> > So how about getting the bitmask removed?
> 
> I think we should get rid of it the bitmap and adjust the iopl. I can't
> think of any good reason to provide the interface. It did have users the
> last time I looked, try Google codesearch.
> 
> Andrew

i have no problem with the removal of the bitmap.

YAMAMOTO Takashi