Re: [RFC PATCH V3 3/4] KVM: X86: Alloc role.pae_root shadow page

[Lai Jiangshan]

On Thu, Apr 14, 2022 at 5:32 PM Lai Jiangshan <jiangshanlai@xxxxxxxxx> wrote:

>
> All new kinds of sp added in this patchset are in the hash too.
>


I think role.guest_pae_root is needed to distinguish it from
a sp for a level-3 guest page in a 4-level pagetable.

Or just role.guest_root_level(or role.root_level) and it can replace
role.passthrough_depth and role.guest_pae_root and role.pae_root.

role.pae_root will be

(role.root_level == 3 || role.root_level == 2) && role.level == 3 &&
(host is 32bit || !tdp_enabled)