Re: [Qemu-devel] [PATCH 1/2] [RFC] Make vmport report the processor speed

[Alexander Graf <agraf@suse.de>]

On 06.01.2009, at 23:33, Jamie Lokier <jamie@shareable.org> wrote:

> Alexander Graf wrote:
>> If VMware ESX finds itself virtualized (read: inside VMware), it
>> reads the TSC speed from its backdoor, because measuring the TSC
>> inside a VM is not exact.
>>
>> This patch implements a hacky way to detect the TSC speed and passes
>> that through to the VM. I am open to suggestions on how to improve
>> the behavior.  It also adds a magic return value of 2 on the version
>> return, which is required by VMware ESX.  WARNING: This
>> implementation breaks on non-x86 hosts!
>
> If you run _this_ code as a guest inside itself, shouldn't it _call_
> VMPORT_CMD_GETPROCSPEED to get the value? :-)

I don't think doing vmware esx in qemu in vmware us that much of a  
valid scenario right now ;).

But I agree with anthony here - not telling vmware esx that it's  
running virtualized might be the best.

Alex

>
>
> -- Jamie
>
>