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
