On Mon, 2023-06-26 at 18:20 +0000, 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 > + 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 > -- > 2.41.0.162.gfafddb0af9-goog > Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>