[Xen-changelog] [xen-3.1-testing] hvm: Only complain about short-period periodic tickers.

["Xen patchbot-3.1-testing" <patchbot-3.1-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1196957712 0
# Node ID cbac6d0a78fd17e2729ca3a827c0d5022afec18f
# Parent  912279dd383616d6031b7f646a3f5e47c76e02d9
hvm: Only complain about short-period periodic tickers.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
xen-unstable changeset:   15610:ad1c6cf0baafe149c9fe03be3255b95ffef68a34
xen-unstable date:        Wed Jul 18 11:00:32 2007 +0100
---
 xen/arch/x86/hvm/vpt.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff -r 912279dd3836 -r cbac6d0a78fd xen/arch/x86/hvm/vpt.c
--- a/xen/arch/x86/hvm/vpt.c    Thu Dec 06 16:14:32 2007 +0000
+++ b/xen/arch/x86/hvm/vpt.c    Thu Dec 06 16:15:12 2007 +0000
@@ -260,13 +260,15 @@ void create_periodic_time(
     pt->enabled = 1;
     pt->pending_intr_nr = 0;
 
-    if ( period < 900000 ) /* < 0.9 ms */
+    /* Periodic timer must be at least 0.9ms. */
+    if ( (period < 900000) && !one_shot )
     {
         gdprintk(XENLOG_WARNING,
                  "HVM_PlatformTime: program too small period %"PRIu64"\n",
                  period);
-        period = 900000; /* force to 0.9ms */
-    }
+        period = 900000;
+    }
+
     pt->period = period;
     pt->vcpu = v;
     pt->last_plt_gtime = hvm_get_guest_time(pt->vcpu);

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