KVM: svm: init cr0 with the wp bit set

Signed-off-by: Avi Kivity <[e-mail]>

drivers/kvm/svm.c

···
 	 * cr0 val on cpu init should be 0x60000010, we enable cpu
 	 * cache by default. the orderly way is to enable cache in bios.
 	 */
-	save->cr0 = 0x00000010 | CR0_PG_MASK;
+	save->cr0 = 0x00000010 | CR0_PG_MASK | CR0_WP_MASK;
 	save->cr4 = CR4_PAE_MASK;
 	/* rdx = ?? */
 }