Re: [Xen-devel] [PATCH] Yield to VCPU hcall, spinlock yielding

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 3 Jun 2005, at 23:06, Ian Pratt wrote:

> It's been a while since I looked at Xen's boot_vcpu code (which could 
> do
> with a bit of refactoring between common and arch anyhow), but I don't
> recall there being anything in there that looked particularly 
> expensive.
> Having said that, it's only holding down a couple of KB of memory, so
> maybe we just need up/down/add.
You can't do a full remove without auditing the whole of Xen and adding 
a reference count to the vcpu structure. We're probably best off lazily 
allocating vcpus but then destroy them all when the domain finally is 
destructed.
 -- Keir


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