Bring back console_start_log_everything() as a milder alternative to

console_start_sync(). Revert keyhandler logic to use it. The
difference now is that serial logic is updated to not drop characters
if inb a log_everything region. Still this is milder than a sync
region since the async buffer must be filled before we start to
busy-wait on each character.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/xen/include/xen/serial.h b/xen/include/xen/serial.h
index b926672dfc..91fd30bcec 100644
--- a/xen/include/xen/serial.h
+++ b/xen/include/xen/serial.h
@@ -33,6 +33,7 @@ struct serial_port {
     char               *txbuf;
     unsigned int        txbufp, txbufc;
     bool_t              tx_quench;
+    int                 tx_log_everything;
     /* Force synchronous transmit. */
     int                 sync;
     /* Receiver callback functions (asynchronous receivers). */
@@ -97,6 +98,10 @@ void serial_force_unlock(int handle);
 void serial_start_sync(int handle);
 void serial_end_sync(int handle);
 
+/* Start/end a region where we will wait rather than drop characters. */
+void serial_start_log_everything(int handle);
+void serial_end_log_everything(int handle);
+
 /* Return number of bytes headroom in transmit buffer. */
 int serial_tx_space(int handle);