Re: [PATCH v2 8/9] KVM: MMU: fully check zero bits for sptes

[Paolo Bonzini]

On 05/08/2015 06:04, Xiao Guangrong wrote:
> -     for_each_shadow_entry_lockless(vcpu, addr, iterator, spte)
> +     for_each_shadow_entry_lockless(vcpu, addr, iterator, spte) {
> +             leaf = iterator.level;
> +
> +             if (!root)
> +                     root = leaf;
> +
> +             sptes[leaf - 1] = spte;
> +

I'm a bit undecided between this and open-coding the macro:

        for (shadow_walk_init(&iterator, vcpu, addr), root = iterator.level;
             shadow_walk_okay(&iterator);
             __shadow_walk_next(&iterator, spte)) {
                leaf = iterator.level;
                spte = mmu_spte_get_lockless(iterator.sptep);

Any second opinions?

Paolo
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