From: awilliam@xenbuild.aw <awilliam@xenbuild.aw>
Date: Mon, 28 Aug 2006 19:18:36 +0000 (-0600)
Subject: [IA64] fix VTi hangs
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~15687
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=d70fb73eda107cd8336ad097684c639594615a3b;p=xen.git

[IA64] fix VTi hangs

In some scenarios, xen_timer_interrupt will not set machine itm,
this may make this LP not receive timer interrupt any more.

Signed-off-by: Anthony Xu <anthony.xu@intel.com>
---

diff --git a/xen/arch/ia64/xen/xentime.c b/xen/arch/ia64/xen/xentime.c
index b1d32c50ae..0ebce66c29 100644
--- a/xen/arch/ia64/xen/xentime.c
+++ b/xen/arch/ia64/xen/xentime.c
@@ -109,6 +109,7 @@ void
 xen_timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
 {
 	unsigned long new_itm, old_itc;
+	int f_setitm = 0;
 
 #if 0
 #define HEARTBEAT_FREQ 16	// period in seconds
@@ -129,11 +130,12 @@ xen_timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
 			vcpu_pend_timer(current);
 			// ensure another timer interrupt happens even if domain doesn't
 			vcpu_set_next_timer(current);
+			f_setitm = 1;
 		}
 
 	new_itm = local_cpu_data->itm_next;
 
-	if (!VMX_DOMAIN(current) && !time_after(ia64_get_itc(), new_itm))
+	if (f_setitm && !time_after(ia64_get_itc(), new_itm)) 
 		return;
 
 	while (1) {