Messages in this thread | | | Date | Thu, 16 Sep 2004 14:00:34 -0400 | From | Robert Picco <> | Subject | Re: device driver for the SGI system clock, mmtimer |
| |
Alan Cox wrote:
>On Iau, 2004-09-16 at 17:09, Jesse Barnes wrote: > > >>I think Christoph already looked at that. And HPET doesn't provide mmap >>functionality, does it? I.e. allow a userspace program to dereference the >>counter register directly? >> >> > >It can do but that assumes nothing else is mapped into the same page >that would be harmful or reveal information that should not be revealed >etc.. > > > HPET driver does provide mmap for user programs.
I agree with caution of other device registers in the same page. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |