1 files changed, 11 insertions, 0 deletions

diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 1d3302cc2ddf..bef58b4982db 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -321,6 +321,16 @@ static void vmi_release_pmd(unsigned long pfn)
 }
 
 /*
+ * We use the pgd_free hook for releasing the pgd page:
+ */
+static void vmi_pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+        unsigned long pfn = __pa(pgd) >> PAGE_SHIFT;
+
+        vmi_ops.release_page(pfn, VMI_PAGE_L2);
+}
+
+/*
  * Helper macros for MMU update flags.  We can defer updates until a flush
  * or page invalidation only if the update is to the current address space
  * (otherwise, there is no flush).  We must check against init_mm, since
@@ -762,6 +772,7 @@ static inline int __init activate_vmi(void)
         if (vmi_ops.release_page) {
                 pv_mmu_ops.release_pte = vmi_release_pte;
                 pv_mmu_ops.release_pmd = vmi_release_pmd;
+                pv_mmu_ops.pgd_free = vmi_pgd_free;
         }
 
         /* Set linear is needed in all cases */