1 files changed, 4 insertions, 0 deletions
diff --git a/target/i386/helper.c b/target/i386/helper.c
index 48d1513..f9d1381 100644
--- a/target/i386/helper.c
+++ b/target/i386/helper.c
@@ -219,6 +219,10 @@ void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
         new_cr4 &= ~CR4_PKS_MASK;
     }
 
+    if (!(env->features[FEAT_7_1_EAX] & CPUID_7_1_EAX_LAM)) {
+        new_cr4 &= ~CR4_LAM_SUP_MASK;
+    }
+
     env->cr[4] = new_cr4;
     env->hflags = hflags;