On 14/08/19 09:04, Yang Weijiang wrote:
> +
> +     if (vcpu->kvm->arch.spp_active && level == PT_PAGE_TABLE_LEVEL)
> +             kvm_enable_spp_protection(vcpu->kvm, gfn);
> +

This would not enable SPP if the guest is backed by huge pages.
Instead, either the PT_PAGE_TABLE_LEVEL level must be forced for all
pages covered by SPP ranges, or (better) kvm_enable_spp_protection must
be able to cover multiple pages at once.

Paolo

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