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    SubjectRe: [PATCH 1/5] mmu: mark spte present if the x bit is set
    2016-07-05 18:50 GMT+08:00 Paolo Bonzini <pbonzini@redhat.com>:
    >
    >
    > On 05/07/2016 05:06, Wanpeng Li wrote:
    >> 2016-06-29 4:49 GMT+08:00 Paolo Bonzini <pbonzini@redhat.com>:
    >> [...]
    >>>
    >>> I think another way to write it is "(pte & 0xFFFFFFFFull) &&
    >>> !is_mmio_spte(pte)", since non-present/non-MMIO SPTEs never use bits
    >>
    >> I misunderstand it here, this will also treat -W- EPT SPTEs as present, right?
    >
    > -W- EPT SPTEs are present but invalid. They should never happen unless
    > they are MMIO SPTEs (in which case !is_mmio_spte(pte) will return true
    > and the function will return false).

    Thanks for the explanation. :)

    Regards,
    Wanpeng Li

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