diff --git a/builtin-run.c b/builtin-run.c

index edcaf3e..f2f2d73 100644

--- a/builtin-run.c

+++ b/builtin-run.c

@@ -590,7 +591,7 @@ static struct kvm *kvm_cmd_run_init(int argc, const char **argv)

 	}

 	if (kvm->cfg.using_rootfs) {

-		strcat(real_cmdline, " rw rootflags=trans=virtio,version=9p2000.L,cache=loose rootfstype=9p");

+		strcat(real_cmdline, " rw rootflags=trans=virtio,version=9p2000.L,cache=mmap rootfstype=9p");

 		if (kvm->cfg.custom_rootfs) {

 			kvm_run_set_sandbox(kvm);