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Re: [Xen-devel] [V9 PATCH 6/8] pvh dom0: Add and remove foreign pages
>>> On 26.04.14 at 02:06, <mukesh.rathor@xxxxxxxxxx> wrote:
> BTW, one thing that is confusing looking at the code is :
>
> ept_memory_type_changed() calls ept_invalidate_emt with PML4 mfn.
> ept_invalidate_emt walks l4 entries checking for emt and doing
> atomic_write_ept_entry on l4 entries. However, looking at latest
> intel SDM figure 28-1, vol 3b, it appears those bits are reserved?
> EPT MT is only valid for L3, l2 and l1. What am I missing?
That's the precise intention: We _want_ an EPT_MISCONFIG VM exit,
and hence we write a value here that we know is reserved.
Jan
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