expects freq 1800MHz but host's freq is 1800MHz: trap and emulate rdtsc

expects freq 1800MHz but host's freq is 1800MHz: trap and emulate rdtsc

[James Harper]

When I restore a DomU I get:

(XEN) save.c:72:d0 Domain 510 expects freq 1800MHz but host's freq is
1800MHz: trap and emulate rdtsc

I'm using an earlier 4.0.2 rc but I can't see any changes to save.c
since then.

Is this a problem?

Thanks

James

[PATCH] Re: expects freq 1800MHz but host's freq is 1800MHz: trap and emulate rdtsc

[Tim Deegan]

x86/tsc: remove misleading printk on HVM restore path.

This warning no longer corresponds to what the code actually does. 

Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>

diff -r b02dd0b47140 xen/arch/x86/hvm/save.c
--- a/xen/arch/x86/hvm/save.c	Thu Jan 20 11:13:07 2011 +0000
+++ b/xen/arch/x86/hvm/save.c	Mon Jan 24 10:25:32 2011 +0000
@@ -65,12 +65,7 @@ int arch_hvm_load(struct domain *d, stru
     if ( hdr->gtsc_khz )
         d->arch.tsc_khz = hdr->gtsc_khz;
     if ( d->arch.vtsc )
-    {
         hvm_set_rdtsc_exiting(d, 1);
-        gdprintk(XENLOG_WARNING, "Domain %d expects freq %uMHz "
-                "but host's freq is %luMHz: trap and emulate rdtsc\n",
-                d->domain_id, hdr->gtsc_khz / 1000, cpu_khz / 1000);
-    }
 
     /* VGA state is not saved/restored, so we nobble the cache. */
     d->arch.hvm_domain.stdvga.cache = 0;