Merge tag 'drm-fixes-for-v4.13-rc1' of git://people.freedesktop.org/~airlied/linux

[sfrench/cifs-2.6.git] / Documentation / virtual / kvm / mmu.txt

diff --git a/Documentation/virtual/kvm/mmu.txt b/Documentation/virtual/kvm/mmu.txt
index 481b6a9c25d5a1737aef54f55a3aa712c859f970..f50d45b1e9679cba4a6a619c59e4d6afd7e06ccb 100644 (file)
--- a/Documentation/virtual/kvm/mmu.txt
+++ b/Documentation/virtual/kvm/mmu.txt
@@ -179,6 +179,10 @@ Shadow pages contain the following information:
     shadow page; it is also used to go back from a struct kvm_mmu_page
     to a memslot, through the kvm_memslots_for_spte_role macro and
     __gfn_to_memslot.
+  role.ad_disabled:
+    Is 1 if the MMU instance cannot use A/D bits.  EPT did not have A/D
+    bits before Haswell; shadow EPT page tables also cannot use A/D bits
+    if the L1 hypervisor does not enable them.
   gfn:
     Either the guest page table containing the translations shadowed by this
     page, or the base page frame for linear translations.  See role.direct.