Re: [Xen-devel] credit scheduler issues in 64bit hypervisor

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 2 Jul 2006, at 15:38, Li, Xin B wrote:

> Hmm, I still prefer allocating VMCS just before launching, can you
> explain your concerns?
If the VMCS allocation fails you have no path for indicating failure to 
the caller -- context switch is always expected to succeed. Critical 
dynamic allocations should really happen on domain/vcpu creation. Also 
the short VMCS lifetime (first launch to dom0_destroy) means that 
getvcpucontext at other times -- on a very new HVM guest or one very 
close to death -- probably crashes or hangs right now.
 -- Keir


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