From: Paolo Bonzini <pbonzini@redhat.com>
To: Hu Yaohui <loki2441@gmail.com>
Cc: kvm <kvm@vger.kernel.org>
Subject: Re: Nested EPT Write Protection
Date: Mon, 22 Jun 2015 13:26:31 +0200 [thread overview]
Message-ID: <5587F0E7.4030801@redhat.com> (raw)
In-Reply-To: <CAHqbYQv0RT-LGCF8cBv0xjYyhLJW99bz_9iMt_LGtHmDAGek1w@mail.gmail.com>
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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next prev parent reply other threads:[~2015-06-22 11:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-19 1:52 Nested EPT Write Protection Hu Yaohui
2015-06-19 6:27 ` Paolo Bonzini
2015-06-19 12:44 ` Hu Yaohui
2015-06-19 15:23 ` Paolo Bonzini
2015-06-19 18:57 ` Hu Yaohui
2015-06-22 11:26 ` Paolo Bonzini [this message]
[not found] ` <CAHqbYQsXfmQfBGva2t_VSFMQj3dnwUUcFPBbvnQDN_tR0y3i8g@mail.gmail.com>
2015-06-22 13:59 ` Paolo Bonzini
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