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[Xen-devel] Re: next->vcpu_dirty_cpumask checking at the top of context_
| To: | Jan Beulich <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: next->vcpu_dirty_cpumask checking at the top of context_switch() |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 16 Apr 2009 17:08:13 +0100 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Thu, 16 Apr 2009 09:08:35 -0700 |
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| Thread-index: | Acm+piR+v8U8J6EgQ+KM8kPL02RJCAAB2aqc |
| Thread-topic: | next->vcpu_dirty_cpumask checking at the top of context_switch() |
| User-agent: | Microsoft-Entourage/12.17.0.090302 |
On 16/04/2009 16:16, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: > Bottom line question is - can't the second !cpus_empty() check go away > altogether, and shouldn't the argument passed to flush_tlb_mask() be > dirty_mask instead of next->vcpu_dirty_cpumask? If you think cpus_empty() checks/warns/bugs could do with sanitising, please send that on separately from other performance-related changes. And I'll let you know what I think of it when I can see the all the details. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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