Re: [Xen-devel] [PATCH v1] vvmx: fix ept_sync() for nested p2m

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Sergey Dyasli [mailto:sergey.dyasli@xxxxxxxxxx]
> Sent: Wednesday, June 28, 2017 5:36 PM
> 
> If ept_sync_domain() is called for np2m, the following happens:
> 
>     1. *np2m*::ept_data::invalidate cpumask is updated
>     2. IPIs are sent for CPUs in domain_dirty_cpumask forcing vmexits
>     3. vmx_vmenter_helper() checks *hostp2m*::ept_data::invalidate
>        and does nothing
> 
> Which is clearly a bug. Make ept_sync_domain() to update hostp2m's
> invalidate mask in nested p2m case and make vmx_vmenter_helper() to
> invalidate EPT translations for all EPTPs if nested virt is enabled.
> 
> Signed-off-by: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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