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-rw-r--r--sysdeps/x86/cpu-features.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index aff894cc1e..35051d705e 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -80,6 +80,8 @@ init_cpu_features (struct cpu_features *cpu_features)
 
 	    case 0x57:
 	      /* Knights Landing.  Enable Silvermont optimizations.  */
+	      cpu_features->feature[index_Prefer_No_VZEROUPPER]
+		|= bit_Prefer_No_VZEROUPPER;
 
 	    case 0x37:
 	    case 0x4a: