> > What happens if the root_hpa is dropped by the L0 MMU? I'm not sure
> > what removes it from the shadow EPT list.
>
> That would result in a vmfunc vmexit, which will jump to handle_vmfunc
> and then a call to mmu_alloc_shadow_roots() that will overwrite the shadow
> eptp entry with the new
Hi Paolo,
Paolo Bonzini writes:
> - Original Message -
>> From: "Bandan Das"
>> To: k...@vger.kernel.org
>> Cc: pbonz...@redhat.com, linux-kernel@vger.kernel.org
>> Sent: Friday, June 30, 2017 1:29:55 AM
>> Subject: [PATCH 1/2] KVM
- Original Message -
> From: "Bandan Das"
> To: k...@vger.kernel.org
> Cc: pbonz...@redhat.com, linux-kernel@vger.kernel.org
> Sent: Friday, June 30, 2017 1:29:55 AM
> Subject: [PATCH 1/2] KVM: nVMX: Implement EPTP switching for the L1 hypervisor
>
This is a mix of emulation/passthrough to implement EPTP
switching for the nested hypervisor.
If the shadow EPT are absent, a vmexit occurs with reason 59.
L0 can then create shadow structures based on the entry that the
guest calls with to obtain a new root_hpa that can be written to
the shadow l
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