[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 3/3] x86_64: allow more vCPU-s per guest
On 10/06/2009 15:48, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: > Since the shared info layout is fixed, guests are required to use > VCPUOP_register_vcpu_info prior to booting any vCPU beyond the > traditional limit of 32. Applied. Is the vcpu[] array re-allocation in XEN_DOMCTL_max_vcpus an example of over-optimistic-concurrency-control? It can't really be 100% safe without extra locking on all users of that array (not good), or using rcu (better), can it. The wmb() is a nice try. ;-) -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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