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    SubjectRe: [PATCH v7 8/9] mmu: spp: Handle SPP protected pages when VM memory changes
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    On 19/11/19 09:49, Yang Weijiang wrote:
    > + /*
    > + * if it's EPT leaf entry and the physical page is
    > + * SPP protected, then re-enable SPP protection for
    > + * the page.
    > + */
    > + if (kvm->arch.spp_active &&
    > + level == PT_PAGE_TABLE_LEVEL) {
    > + struct kvm_subpage spp_info = {0};
    > + int i;
    > +
    > + spp_info.base_gfn = gfn;
    > + spp_info.npages = 1;
    > + i = kvm_spp_get_permission(kvm, &spp_info);
    > + if (i == 1 &&
    > + spp_info.access_map[0] != FULL_SPP_ACCESS)
    > + new_spte |= PT_SPP_MASK;
    > + }

    This can use gfn_to_subpage_wp_info directly (or is_spp_protected if you
    prefer).

    Paolo

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