Re: GGI Project Unhappy On Linux
H. Peter Anvin (hpa@transmeta.com)
Sat, 28 Mar 1998 03:07:26 -0800 (PST)
> On 28 Mar 1998, H. Peter Anvin wrote:
>
> > Huge. IOPL 3 is just user mode with full access to the hardware, but
> > not, for example, to kernel memory.
> [Good to see, that my memory was right :) ]
> So it can still crash the system, and can modify the kernel memory
> indirectly, for example by telling some IO port programmable device to
> DMA to kernel memory.
>
> Andreas
>
Yes.
-hpa
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