--- nono/vm/virtio_entropy.cpp	2026/04/29 17:05:32	1.1.1.2
+++ nono/vm/virtio_entropy.cpp	2026/04/29 17:05:42	1.1.1.3
@@ -56,13 +56,10 @@ VirtIOEntropyDevice::MonitorUpdate(Monit
 void
 VirtIOEntropyDevice::ProcessDesc(VirtIOReq& req)
 {
-	uint32 data = 0;
+	std::vector<uint32> buf(roundup(req.wlen, 4));
 
-	while (req.pos < req.len) {
-		if ((req.pos & 3) == 0) {
-			data = rnd();
-		}
-		ReqWriteU8(req, data & 0xff);
-		data >>= 8;
+	for (auto&& d : buf) {
+		d = rnd();
 	}
+	ReqWriteRegion(req, (const uint8 *)buf.data(), req.wlen);
 }