diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3ed0e86bf305..bbc9df5b084d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3245,10 +3245,13 @@ static int set_msr_mce(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 			/* only 0 or all 1s can be written to IA32_MCi_CTL
 			 * some Linux kernels though clear bit 10 in bank 4 to
 			 * workaround a BIOS/GART TBL issue on AMD K8s, ignore
-			 * this to avoid an uncatched #GP in the guest
+			 * this to avoid an uncatched #GP in the guest.
+			 *
+			 * UNIXWARE clears bit 0 of MC1_CTL to ignore
+			 * correctable, single-bit ECC data errors.
 			 */
 			if ((offset & 0x3) == 0 &&
-			    data != 0 && (data | (1 << 10)) != ~(u64)0)
+			    data != 0 && (data | (1 << 10) | 1) != ~(u64)0)
 				return -1;
 
 			/* MCi_STATUS */