On Sun, Aug 04, 2013 at 11:24:41AM +0200, Jan Kiszka wrote:
> On 2013-08-01 16:08, Gleb Natapov wrote:
> > Another day -- another version of the nested EPT patches. In this version
> > included fix for need_remote_flush() with shadowed ept, set bits 6:8
> > of exit_qualification during ept_violation, update_permission_bitmask()
> > made to work with shadowed ept pages and other small adjustment according
> > to review comments.
>
> Was just testing it here and ran into a bug: I've L2 accessing the HPET
> MMIO region that my L1 passed through from L0 (where it is supposed to
> be emulated in this setup). This used to work with an older posting of
Not sure I understand your setup. L0 emulates HPET, L1 passes it through
to L2 (mmaps it and creates kvm slot that points to it) and when L2
accessed it it locks up?
> Jun, but now it locks up (infinite loop over L2's MMIO access, no L2->L1
> transition). Any ideas where to look for debugging this?
>
Can you do an ftrace -e kvm -e kvmmmu? Unit test will also be helpful :)
--
Gleb.
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