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SubjectRe: RFC: Tainting the kernel on raw I/O access

* H. Peter Anvin <h.peter.anvin@intel.com> wrote:

> In a meeting earlier today, we discussed MSR access and that it could be
> used to do bad things. The same applies to other forms of raw I/O
> (/dev/mem, /dev/port, ioperm, iopl, etc.)
>
> This is basically the same problem with which the secure boot people
> have been struggling.
>
> Peter Z. suggested we should taint the kernel on raw I/O access, and I
> tend to concur.

Lets start with the 'only for developers and the crazy'
interfaces, like /dev/msr access, and extend it step by step?

Thanks,

Ingo


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