[Xen-devel] [PATCH] Xen: Force non-irq keyhandler to be run in tasklet when receive a debugkey from serial port

[Lan Tianyu <tianyu.lan@xxxxxxxxx>]

__serial_rx() runs in either irq handler or timer handler and non-irq
keyhandler should not run in these contexts. So always force non-irq
keyhandler to run in tasklet when receive a debugkey from serial port

Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
 xen/drivers/char/console.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index b0f74ce..184b523 100644
--- a/xen/drivers/char/console.c
+++ b/xen/drivers/char/console.c
@@ -347,7 +347,7 @@ static void switch_serial_input(void)
 static void __serial_rx(char c, struct cpu_user_regs *regs)
 {
     if ( xen_rx )
-        return handle_keypress(c, regs, !in_irq());
+        return handle_keypress(c, regs, true);
 
     /* Deliver input to guest buffer, unless it is already full. */
     if ( (serial_rx_prod-serial_rx_cons) != SERIAL_RX_SIZE )
-- 
2.9.3


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