[PATCH v4 2/6] KVM: Documentation: Update the field name gfns and its description in kvm_mmu_page

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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 23c20455d4e7..f659f282357d 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
-- 
2.42.0.283.g2d96d420d3-goog




[Index of Archives]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux