On 6/26/23 11:20, Mingwei Zhang wrote:
> Add the missing description for ptep in kvm_mmu_page description. ptep is
> used when TDP MMU is enabled and it shares the storage with parent_ptes.
> Update the doc to help readers to get up-to-date info.
>
> Signed-off-by: Mingwei Zhang <mizhang@xxxxxxxxxx>
> ---
> Documentation/virt/kvm/x86/mmu.rst | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/Documentation/virt/kvm/x86/mmu.rst b/Documentation/virt/kvm/x86/mmu.rst
> index 4c9044b4dc6c..5cd6cd5e8926 100644
> --- a/Documentation/virt/kvm/x86/mmu.rst
> +++ b/Documentation/virt/kvm/x86/mmu.rst
> @@ -237,6 +237,11 @@ Shadow pages contain the following information:
> parent_ptes points at this single spte, otherwise, there exists multiple
> sptes pointing at this page and (parent_ptes & ~0x1) points at a data
> structure with a list of parent sptes.
> + ptep:
> + The reverse mapping for the pte pointing at this page's spt. This field is
> + used in replace of parent_ptes when TDP MMU is used. In TDP MMU, each
in replacement of
> + non-root shadow page will have one parent, while each root shadow page has
> + no parent. Note that this field is a union with parent_ptes.
> unsync:
> If true, then the translations in this page may not match the guest's
> translation. This is equivalent to the state of the tlb when a pte is
--
~Randy
