Hi Jason,
On Mon, Apr 22, 2024 at 1:54 PM Jason Gunthorpe <jgg@xxxxxxxxxx> wrote:
> On Mon, Apr 22, 2024 at 09:27:18AM +0200, Geert Uytterhoeven wrote:
> > > +if IOMMUFD
> > > +config IOMMUFD_TEST
> > > + bool "IOMMU Userspace API Test support"
> > > + depends on DEBUG_KERNEL
> > > + depends on FAULT_INJECTION
> > > + depends on RUNTIME_TESTING_MENU
> > > + default n
> > > + help
> > > + This is dangerous, do not enable unless running
> > > + tools/testing/selftests/iommu
> > > +endif
> >
> > How dangerous is this?
> > I.e. is it now unsafe to run an allyesconfig or allmodconfig kernel?
>
> Depends what you mean by unsafe? This is less unsafe than /dev/mem,
> for instance.. It does nothing unless poked by userspace.
OK, so the test itself does not cause a crash, or data corruption?
> > Probably this symbol should be tristate?
>
> It is not a seperate module.
Perhaps it should be? ;-)
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
