Keep running the main processing loop while waiting for input.

src/core/console.c

 #include "stddef.h"
 #include "console.h"
+#include <gpxe/process.h>
 
 /** @file */
 
 		 * less CPU time in a VMware session.
 		 */
 		cpu_nap();
+
+		/* Keep processing background tasks while we wait for
+		 * input.
+		 */
+		step();
 		
 		console = has_input();
 		if ( console && console->getchar )

src/core/getkey.c

 
 #include <console.h>
 #include <latch.h>
+#include <gpxe/process.h>
 #include <gpxe/keys.h>
 
 /** @file
 	unsigned long expiry = ( currticks() + timeout );
 
 	while ( currticks() < expiry ) {
+		step();
 		if ( iskey() )
 			return getchar();
 	}