diff --git a/hypervisor/arch/x86/guest/vcpu.c b/hypervisor/arch/x86/guest/vcpu.c
index ea6d0f49a..c0f34d9b8 100644
--- a/hypervisor/arch/x86/guest/vcpu.c
+++ b/hypervisor/arch/x86/guest/vcpu.c
@@ -532,6 +532,10 @@ int32_t run_vcpu(struct acrn_vcpu *vcpu)
 		 */
 		flush_vpid_global();
 
+		/* Set XCR0 and XSS to default value */
+		write_xcr(0, XCR0_DEFAULT);
+		msr_write(MSR_IA32_XSS, XSS_DEFAULT);
+
 		/* Set vcpu launched */
 		vcpu->launched = true;
 
diff --git a/hypervisor/include/arch/x86/cpu.h b/hypervisor/include/arch/x86/cpu.h
index 76959113e..fcf6d8b45 100644
--- a/hypervisor/include/arch/x86/cpu.h
+++ b/hypervisor/include/arch/x86/cpu.h
@@ -85,6 +85,8 @@
 #define CR4_SMAP                (1UL<<21U)
 #define CR4_PKE                 (1UL<<22U)	/* Protect-key-enable */
 
+/* XCR0_FPU */
+#define XCR0_FPU		(1UL<<0U)
 /* XCR0_SSE */
 #define XCR0_SSE		(1UL<<1U)
 /* XCR0_AVX */
@@ -100,6 +102,8 @@
  */
 #define	XCR0_RESERVED_BITS	((~((1UL << 10U) - 1UL)) | (1UL << 8U))
 
+#define XCR0_DEFAULT		(XCR0_FPU)
+#define XSS_DEFAULT		(0U)
 
 /*
  * Entries in the Interrupt Descriptor Table (IDT)