* Running domU in ring 2
@ 2011-12-11 22:28 Olatunji Ruwase
2011-12-11 23:43 ` George Shuklin
0 siblings, 1 reply; 2+ messages in thread
From: Olatunji Ruwase @ 2011-12-11 22:28 UTC (permalink / raw)
To: xen-devel
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
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Running domU in ring 2
2011-12-11 22:28 Running domU in ring 2 Olatunji Ruwase
@ 2011-12-11 23:43 ` George Shuklin
0 siblings, 0 replies; 2+ messages in thread
From: George Shuklin @ 2011-12-11 23:43 UTC (permalink / raw)
To: xen-devel
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
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-12-11 22:28 Running domU in ring 2 Olatunji Ruwase
2011-12-11 23:43 ` George Shuklin
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