Re: [PATCH 00/10] Enhance /dev/mem to allow read/write of arbitrary

H. Peter Anvin
2011-06-20T16:44:25Z

On 06/20/2011 09:40 AM, Ingo Molnar wrote:
>
> There is no reason why they couldnt use a .config option or a boot
> option to get their weird stuff going, which weird stuff also happens
> to be useful.
>
> What i'm somewhat against is having this enabled by default for weird
> stuff that also happens to be harmful - and the fact that it never
> worked over 4G physical gives us the perfect opportunity to do just
> that.
>

I'm concerned about that notion. I think it's fine to modularize
/dev/mem, but what we're seeing is that Red Hat and all kinds of other
entities are putting in ad hoc versions of /dev/mem, but of course doing
so incorrectly.

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.