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[Xen-devel] Re: [PATCH] Don't assume the vcpu_id is continous in alloc_v
| To: | "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [PATCH] Don't assume the vcpu_id is continous in alloc_vcpu |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 12 Nov 2009 16:04:45 +0000 |
| Cc: | |
| Delivery-date: | Thu, 12 Nov 2009 08:04:56 -0800 |
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| Thread-index: | AcpjiGc6hZlnMOBYRPSWYjjerzo1vQAA1c0HAAO2138ABCG/kAABrkn/ |
| Thread-topic: | [PATCH] Don't assume the vcpu_id is continous in alloc_vcpu |
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On 12/11/2009 15:27, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote: > Thanks for your changes very much. > I just noticed I missed get a lock for this change. > Originally I thought the XEN_DOMCTL_max_vcpus will be synced, but seems no. So > alloc_vcpu() may have race condition. (for idle_vcpu or dom0, it should be > safe already) All domctl operations are serialised on domctl_lock. I think that suffices? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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