diff --git a/src/gopheros/kernel/kfmt/ringbuf.go b/src/gopheros/kernel/kfmt/ringbuf.go
index c377dbc..2bd5baa 100644
--- a/src/gopheros/kernel/kfmt/ringbuf.go
+++ b/src/gopheros/kernel/kfmt/ringbuf.go
@@ -40,9 +40,10 @@ func (rb *ringBuffer) Read(p []byte) (n int, err error) {
 			n = pLen
 		}
 
-		for i := 0; i < n; i, rb.rIndex = i+1, rb.rIndex+1 {
-			p[i] = rb.buffer[rb.rIndex]
-		}
+		copy(p, rb.buffer[rb.rIndex:rb.rIndex+n])
+		rb.rIndex += n
+
+		return n, nil
 	case rb.rIndex > rb.wIndex:
 		// Read up to min(len(buf) - rIndex, len(p)) bytes
 		n = len(rb.buffer) - rb.rIndex
@@ -50,17 +51,15 @@ func (rb *ringBuffer) Read(p []byte) (n int, err error) {
 			n = pLen
 		}
 
-		for i := 0; i < n; i, rb.rIndex = i+1, rb.rIndex+1 {
-			p[i] = rb.buffer[rb.rIndex]
-		}
+		copy(p, rb.buffer[rb.rIndex:rb.rIndex+n])
+		rb.rIndex += n
 
 		if rb.rIndex == len(rb.buffer) {
 			rb.rIndex = 0
 		}
 
+		return n, nil
 	default: // rIndex == wIndex
-		n, err = 0, io.EOF
+		return 0, io.EOF
 	}
-
-	return n, err
 }