Update the field 'gfns' in kvm_mmu_page to 'shadowed_translation' to be
consistent with the code. Also update the corresponding 'gfns' in the
comments. The more detailed description of 'shadowed_translation' is
already inlined in the data structure definition, so no need to duplicate
the text but simply just update the names.
Signed-off-by: Mingwei Zhang <mizhang@xxxxxxxxxx>
Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>
---
Documentation/virt/kvm/x86/mmu.rst | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/Documentation/virt/kvm/x86/mmu.rst b/Documentation/virt/kvm/x86/mmu.rst
index 561efa8ec7d7..35e642303962 100644
--- a/Documentation/virt/kvm/x86/mmu.rst
+++ b/Documentation/virt/kvm/x86/mmu.rst
@@ -221,11 +221,14 @@ Shadow pages contain the following information:
at __pa(sp2->spt). sp2 will point back at sp1 through parent_pte.
The spt array forms a DAG structure with the shadow page as a node, and
guest pages as leaves.
- gfns:
- An array of 512 guest frame numbers, one for each present pte. Used to
- perform a reverse map from a pte to a gfn. When role.direct is set, any
- element of this array can be calculated from the gfn field when used, in
- this case, the array of gfns is not allocated. See role.direct and gfn.
+ shadowed_translation:
+ An array of 512 shadow translation entries, one for each present pte. Used
+ to perform a reverse map from a pte to a gfn as well as its access
+ permission. When role.direct is set, the shadow_translation array is not
+ allocated. This is because the gfn contained in any element of this array
+ can be calculated from the gfn field when used. In addition, when
+ role.direct is set, KVM does not track access permission for each of the
+ gfn. See role.direct and gfn.
root_count:
A counter keeping track of how many hardware registers (guest cr3 or
pdptrs) are now pointing at the page. While this counter is nonzero, the
--
2.41.0.585.gd2178a4bd4-goog
