1 files changed, 4 insertions, 1 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index e10962dfc203..b1f6451022e5 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -44,6 +44,7 @@
 #include <asm/page.h>
 #include <asm/pat.h>
 #include <asm/cmpxchg.h>
+#include <asm/e820/api.h>
 #include <asm/io.h>
 #include <asm/vmx.h>
 #include <asm/kvm_page_track.h>
@@ -2892,7 +2893,9 @@ static bool kvm_is_mmio_pfn(kvm_pfn_t pfn)
                          */
                         (!pat_enabled() || pat_pfn_immune_to_uc_mtrr(pfn));
 
-        return true;
+        return !e820__mapped_raw_any(pfn_to_hpa(pfn),
+                                     pfn_to_hpa(pfn + 1) - 1,
+                                     E820_TYPE_RAM);
 }
 
 /* Bits which may be returned by set_spte() */