[Xen-devel] [PATCH RFC v1 48/74] x86/guest: unmask console event channel

[Wei Liu <wei.liu2@xxxxxxxxxx>]

From: Roger Pau Monne <roger.pau@xxxxxxxxxx>

Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
---
To be squashed with "x86/guest: use PV console for Xen/Dom0 I/O"
---
 xen/drivers/char/xen_pv_console.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/drivers/char/xen_pv_console.c 
b/xen/drivers/char/xen_pv_console.c
index 5e494bc72a..2df7d982ba 100644
--- a/xen/drivers/char/xen_pv_console.c
+++ b/xen/drivers/char/xen_pv_console.c
@@ -37,6 +37,7 @@ static DEFINE_SPINLOCK(tx_lock);
 
 void __init pv_console_init(void)
 {
+    struct evtchn_unmask unmask;
     long r;
     uint64_t raw_pfn = 0, raw_evtchn = 0;
 
@@ -58,6 +59,9 @@ void __init pv_console_init(void)
     cons_ring = (struct xencons_interface *)fix_to_virt(FIX_PV_CONSOLE);
     cons_evtchn = raw_evtchn;
 
+    unmask.port = raw_evtchn;
+    BUG_ON(xen_hypercall_event_channel_op(EVTCHNOP_unmask, &unmask));
+
     printk("Initialised PV console at 0x%p with pfn %#lx and evtchn %#x\n",
             cons_ring, raw_pfn, cons_evtchn);
     return;
-- 
2.11.0


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