From 60375cd1e4507db3103f22017d0897a7294d3629 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Mon, 11 Jun 2001 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 2001-06-11

---
 pc/i8253.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pc/i8253.c b/pc/i8253.c
index 4c38c6fccb21b9a31b3fcf0f8651e752796f310e..805fc75e0dbd3430e7e83c4ea8636afab30da8d9 100644
--- a/pc/i8253.c
+++ b/pc/i8253.c
@@ -235,6 +235,15 @@ clockintr0(Ureg* ureg, void *v)
 
 	now = fastticks(nil);
 	when = i8253.when;
+
+	/*
+	 * If we suspend the machine and resume, the
+	 * processor cycle counter gets reset.  Detect this
+	 * and deal with it.
+	 */
+	if(now < i8253.when && i8253.when-now > 3*i8253.fastperiod)
+		i8253.when = now;
+
 	if(now >= i8253.when){
 		clockintr(ureg, v);
 		do