Where is your ring 2 in x86_64 architecture? They killed It!
On 12.12.2011 02:28, Olatunji Ruwase wrote:> Hello,
> I am curious as to whether it is possible/practical to run a PV driver
> domain in the x86 protection ring 2 as opposed to ring 1. I m working on
> using hardware logging to capture instruction-grained traces of
> kernel-mode device drivers. My implementation is based on running Xen 3.3
> on Simics simulated hardware. Distinguishing the kernel-mode executions
> of the dom0 and domU (driver domain) in the simulation framework will be
> easier if the kernels ran in different rings, dom0 in ring 1 and domU in
> ring 2.
>
> Thanks,
>
> tunji
>
>
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