Re: [Xen-devel] Re: [Qemu-devel] Recursion in cpu_physical_memory_rw

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 16/11/06 5:11 am, "Herbert Xu" <herbert@xxxxxxxxxxxxxxxxxxx> wrote:

>> The only "harm" done to a host is that the process will take as much CPU
>> as it can get.  This is really only a problem in Xen because the device
>> model is in Domain-0.  Once the device model is in a different domain,
>> it doesn't matter anymore as the normal scheduler parameters can be used
>> to ensure that no other hosts are harmed.
> 
> Actually it'll still be a problem in a driver domain unless it (and the
> hardware) is dedicated to a single guest.

Each qemu 'stub domain' will be dedicated to a single guest. Adding a
recursion counter to the memory access functions sounds possibly useful even
just from a debugging p.o.v. though.

 -- Keir



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