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

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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