Re: Nested EPT Write Protection

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On 19/06/2015 20:57, Hu Yaohui wrote:
> One more thing, for the standard guest VM which uses EPT, What's the
> usage of "gfn" field in the "struct kvm_mmu_page"?  Since it uses EPT,
> a single shadow page should has no relation with any of the guest
> physical page, right?

The gfn is the same value that you can find in bits 12 to MAXPHYADDR-1
of the EPT page table entry.

Paolo

> According to the source code, each allocated
> shadow page "struct kvm_mmu_page" got it's gfn field filled.
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