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Re: [Xen-devel] [Patch] Fix the slow wall clock time issue in x64 SMP Vi
| To: | "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [Patch] Fix the slow wall clock time issue in x64 SMP Vista |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Wed, 10 Jan 2007 12:02:05 +0000 |
| Delivery-date: | Wed, 10 Jan 2007 04:04:44 -0800 |
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| Thread-topic: | [Xen-devel] [Patch] Fix the slow wall clock time issue in x64 SMP Vista |
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On 10/1/07 11:53, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> wrote: > 1) I made the change mainly for timer1 of HPET. Actually I don't know exactly > how x64 SMP Vista uses HPET's timer1 to adjust the wall clock time; but > without the patch, HPET's timer1 can generate and inject interrupts with a > frequency of 20KHz or so! and the wall clock time would become slow. I cannot see the logic behind the change though. If the guest has set up a timeout, and the timeout is in the past, it makes sense to deliver immediately. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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