[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH] Don't assume the vcpu_id is continous in alloc_vcpu
On 12/11/2009 11:31, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote: >> Currently in alloc_vcpu, it assumes the vcpu is allocated with vcpu_id is >> continous. >> When cpu hot-added, this assumption is broken because the hot-added CPU may >> be >> brougt online by dom0 in arbitrary order. This patch try to link the new vcpu >> to the end of the link. >> >> Signed-off-by: Jiang, Yunhong <yunhong.jiang@xxxxxxxxx> > > Is this something to do with allocating vcpus for the idle domain? > > If so, I suggest we just allocate vcpu_ids sequentially on-demand. I can > work up a patch for you to test if you like. I was wrong, that was a bad idea since idle_vcpu[] is also the idle domain's vcpu pointer array. Actually I also have been able to revert c/s 20045 since I was mistaken about that being needed. And I've applied your patch as c/s 20433, but I rewrote it to keep vcpus in ascending order of vcpuid (not sure it's necessary really, but it's nice to do). -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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