kvm: x86: mmu: Recovery of shattered NX large pages

[linux-2.6-block.git] / Documentation / admin-guide / kernel-parameters.txt

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 9d5f123cc218a06ac6b8964db9d1ffe7884d7860..8dee8f68fe15cfd99278ac91ed8775462b828060 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2068,6 +2068,12 @@
                        If the software workaround is enabled for the host,
                        guests do need not to enable it for nested guests.
 
+       kvm.nx_huge_pages_recovery_ratio=
+                       [KVM] Controls how many 4KiB pages are periodically zapped
+                       back to huge pages.  0 disables the recovery, otherwise if
+                       the value is N KVM will zap 1/Nth of the 4KiB pages every
+                       minute.  The default is 60.
+
        kvm-amd.nested= [KVM,AMD] Allow nested virtualization in KVM/SVM.
                        Default is 1 (enabled)